JP3630875B2 - Air cleaner - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an air purifier that cleans air in a home or the like.
[0002]
[Prior art]
Conventional air purifiers drive a fan built in the main body to suck outside air from the air intake port provided in the main body, pass it through the dust collection section provided inside, remove the dust, and exhaust the air from the discharge port to the room. In addition to the so-called fan type air purifier, a corona discharge is generated by applying a high voltage between the discharge electrode and the counter electrode without using a fan, and an ionic wind induced by the corona discharge is used. A so-called ion wind type air cleaner that sucks outside air into the main body, charges the dust in the air, removes it at the dust collecting section, and then exhausts it into the room is known, for example, in Japanese Utility Model Publication No. 2-43495. It has been.
[0003]
In this air purifier, cotton dust and insects infiltrate into the outside air sucked into the main body, and this adheres to the discharge line and counter electrode that become the discharge electrode, resulting in a decrease in discharge efficiency, There was a problem that abnormal discharge might occur. As a solution to this problem, it is conceivable to remove pre-filter dust and insects by attaching a pre-filter to the air intake vent that takes in outside air. However, if you forget to attach the pre-filter, the problem will not be solved. It was.
[0004]
[Problems to be solved by the invention]
Unless the pre-filter is arranged in the main body, the present invention prevents a discharge from being generated by applying a high voltage between the discharge electrode and the counter electrode. In other words, the discharge is generated to generate an ionic wind. Air cleaning to prevent dust from being discharged or causing abnormal discharge by capturing dust and insects in advance with a pre-filter when charging the dust collected by the dust collector and removing it. It is an object to provide a machine.
[0005]
[Means for Solving the Problems]
The present invention is provided between a discharge electrode and a counter electrode provided in the main body.Generated by high voltage generatorA discharge is generated by applying a high voltage, and an ion wind is generated by this discharge to charge the dust in the outside air sucked from the intake hole, remove the dust in the dust collecting part, and then exhaust it. A pre-filter that captures dust contained in the outside air to be sucked in advance is arranged in the main body, and the discharge electrode cannot be mounted at a predetermined position in the main body unless this pre-filter is arranged.In addition, the high voltage generator does not operate unless the discharge electrode is mounted at the predetermined position.It is what I did.
[0006]
More specifically, the discharge electrode is attached to the main body via the mounting case, and the prefilter fixing plate that is engaged with the prefilter and is attached to the prefilter is fixed to the main body. The fixing plate is deformed so as to be retracted to a position where it does not get in the way when the mounting case is attached to the main body by engaging with the fixing plate.
[0007]
With this configuration, the discharge electrode cannot be mounted at a predetermined position in the main body unless the prefilter is disposed in the main body.On top, can not operate the high voltage generatorTherefore, it is not possible to generate a discharge by applying a high voltage between the discharge electrode and the counter electrode. If the pre-filter is placed in the main body, the discharge electrode can be mounted at a predetermined position in the main body.At the same time, the high voltage generator can be operated,A high voltage can be applied between the discharge electrode and the counter electrode to generate a discharge. At this time, dust and insects are removed by the prefilter, which can prevent a decrease in discharge efficiency and abnormal discharge. it can.
[0010]
【Example】
An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes an air purifier main body case, which includes a front case 2 and a rear case 3. A decorative board 4 is attached to the upper center of the front case 2. Reference numeral 5 denotes a middle frame that is mounted so as to partition the inside of the main body case 1 forward and backward, and an electric motor 6 is mounted at the center of the middle frame 5. A vent hole 7 is provided in the middle frame 5 around the electric motor 6. A fan 8 rotated by an electric motor 6 is provided in a space behind the middle frame 5 in the main body case.
[0011]
The middle frame 5 and the rear case 3 are formed with a peripheral wall 10 of a spiral fan case 9 surrounding the fan 8. The upper part of the fan case 9 is opened to serve as a discharge port, and communicates with a grid-like second exhaust hole 11 provided in the rear case 3. (The first exhaust hole will be described later)
A second dust collecting portion 12 is accommodated in a space in front of the middle frame 5 in the main body case (the first dust collecting portion will be described later). The second dust collecting unit 12 includes a so-called electret filter 13 formed into a bellows-like electret and a deodorizing filter 14 made of activated charcoal, and both the filters 13 and 14 are surrounded by a frame 15 and integrated. . Reference numeral 16 denotes a claw that holds the second dust collecting portion 12 so as not to be detached from the frame body 15. The second dust collecting portion 12 can be taken out from an outlet 17 (see FIG. 4) formed on the side surface of the front case 2. Reference numeral 18 denotes a handle formed on the frame 15 for taking out.
[0012]
The front surface of the front case 2 is covered with a front cover 19. The main body outline of the air purifier includes a main body case 1 and a front cover 19. As shown in FIG. 3, the front cover 19 is formed with a plurality of vertically long slit-shaped first intake holes 20. The front cover 19 is attached to the front case 2 by engaging a pair of protruding pieces 21 protruding from the lower end of the front cover 19 with a pair of receiving portions 22 formed at the lower end of the front case 2 (see FIG. 1). The pair of claws 24 attached to the upper left and right of the front cover 19 are engaged with a pair of locking holes 23 (see FIG. 14) formed on the left and right of the upper part of the front case 2.
[0013]
This state will be described with reference to FIG. A slide plate storage box 26 having a through hole 25 on the back side of the front cover 19 is attached by screws 27, and a slide plate 28 is slidably mounted in the storage box 26 to the left and right. The claw 24 protruding from the hole 25 is projected, and the slide plate 28 is always biased outward by a spring 30, that is, in a direction in which the claw 24 engages with the locking hole 23. When the pressing portion 29 formed at the end of the slide plate 28 is pressed inward against the spring 30, the engagement between the claw 24 and the locking hole 23 is released, and the front cover 19 can be removed from the front case 2. When the hand is released from the pressing portion 29, the claw 24 and the locking hole 23 are engaged by the force of the spring 30. In this way, the front cover 19 can be easily attached and detached from the front case 2.
[0014]
The front cover 19 and the front case 2 are each provided with a discharge line 31 and a counter electrode 32 serving as discharge electrodes, and a negative high voltage is applied to the discharge line 31 while a positive high voltage is applied to the counter electrode 32. By being grounded, an ion wind generating unit is formed that generates a discharge between the discharge line 31 and the counter electrode 32 and induces an ion wind by this discharge.
[0015]
Hereinafter, the ion wind generator will be described. The discharge line 31 is attached to a discharge line attachment case 33 having a bowl shape made of synthetic resin as shown in FIG. As will be described later, the mounting case 33 is detachably mounted in the center portion on the back side of the front cover 19. A metal terminal board 34 as shown in FIGS. 7 and 9 is attached to the upper end of the mounting case 33. The terminal plate 34 is press-fitted into the hole 35 formed in the attachment case 33 from the direction of the arrow in FIGS.
[0016]
On the other hand, a U-shaped elastic piece 36 as shown in FIGS. 8 and 10 is integrally formed at the lower end of the mounting case 33, and a U-shaped metal reinforcement is provided along the inside of the elastic piece 36. A plate 37 is mounted. One end 38 of this reinforcing plate 37 is engaged with a locking portion 39 provided at the lower end of the mounting case 33, and the reinforcing plate 37 is rotated in the direction of the arrow in FIG. The provided hole 40 is engaged with the claw 41 provided in the elastic piece 36 and is mounted along the elastic piece 36. In this mounted state, the elastic piece 36 is reinforced and adjusted so that the spring property of the elastic piece 36 becomes stiff.
[0017]
The terminal plate 34 and the reinforcing plate 37 are respectively formed with key-like claws 42 and 43, and both ends of the discharge wire 31 are engaged with the claws 42 and 43 via springs 44. The discharge line 31 is given an appropriate tension by a spring 44. Here, if the spring 44 is directly engaged with the synthetic resin mounting case 33, the engagement portion may be deformed due to long-term use due to the tension of the spring 44. Since it is engaged with the plate 37, it is possible to prevent deformation of the engaging portion due to long-term use.
[0018]
Next, a method of mounting the mounting case 33 to which the discharge wire 31 is mounted on the front cover 19 which is a part of the main body will be described. Projection pieces 45, 46 are formed on the upper and lower portions of the center portion of the back surface of the front cover 19, respectively. One engagement hole 47 is formed in the upper projection piece 45, and two protrusions are formed in the lower projection piece 46. Two engagement holes 48 are formed. One protrusion 49 protrudes from the upper end of the attachment case 33, and two claws 50 are formed on the lower surface of the elastic piece 36 at the lower end of the attachment case. Then, with the surface 95 corresponding to the bottom of the collar of the bowl-shaped mounting case 33 facing the front cover 19, the protrusion 49 is inserted into the engagement hole 47 from below as shown in FIG. When the elastic piece 36 is pushed in as shown by the arrow in FIG. 12, the claw 50 is engaged with the engagement hole 48 by the elasticity of the elastic piece 36, and the mounting case 33 is attached to the front cover 19. Can do. Reference numerals 51 and 52 are guide pieces integrally formed from both sides of the protrusions 45 and 46, respectively, and serve as guides when the protrusion 49 is inserted into the engagement hole 47 and when the elastic piece 36 is pressed.
[0019]
Here, since the elastic piece 36 is reinforced with the reinforcing plate 37, the elasticity of the elastic piece 36 does not sag even if the mounting case 33 is attached to and detached from the front cover 19 many times. The mounting case 33 can be securely attached to the front cover 19 by always engaging with the hole 48 reliably.
[0020]
An operation piece 54 for operating a first safety switch 53 inserted in a circuit for operating a high voltage generator 80 (described later) for supplying a high voltage to the discharge line 31 is integrally formed at the lower end of the mounting case 33. It is formed (see FIGS. 10, 13, and 15). When the front cover 19 is mounted on the front case 2 with the operation case 54 mounted on the front cover 19, the first safety switch 53 is closed and the high voltage generator 80 is turned on. By operating and removing the front cover 19 from the front case 2, the first safety switch 53 is opened to stop the operation of the high voltage generator 80.
[0021]
By the way, a pre-filter 55 for removing dust in the air sucked from the slit-like first intake holes 20 in advance is attached to the back surface of the front cover 19. The cover 19 cannot be attached. The structure of this point will be described below.
[0022]
As shown in FIGS. 2 and 13, the prefilter 55 is divided into left and right two parts. Like the front cover 19, the prefilter 55 has a number of vertically long slits 56 and a synthetic resin frame 57 and the frame 57. It consists of a synthetic resin net 58 (see FIG. 17) that is integrally molded. The two pre-filters 55 cover the entire surface of the first intake hole 20 of the front cover 19. A wall 59 toward the front case 2 is integrally formed on the rear surface of the front cover 19 so as to surround the outer side of the first intake hole 20, and the left and right pre-filter frame bodies 57 are formed on the wall 59. A through-hole 61 for receiving an engaging piece 60 projecting from the outside of each is formed. (See Figure 2)
A pre-filter fixing plate 62 is fixed with screws 63 at two locations on the upper and lower sides of the back cover center portion of the front cover 19. As shown in FIGS. 2 and 17, a pair of fixing pieces 64 protrude from the fixing plate 62, and the fixing pieces 64 have claws 65 protruding inside the left and right pre-filter frame bodies 57. A through hole 66 is formed. The fixing plate 62 is made of synthetic resin, and the pair of fixing pieces 64 has elasticity in a direction in which the fixing plate 64 approaches and separates from each other.
[0023]
Therefore, by inserting the engagement piece 60 provided outside the prefilter frame 57 into the through hole 61 and inserting the claw 65 protruding inward into the through hole 65 of the fixed piece 64, the prefilter 55 is inserted. Is attached to the front cover 19, but at this time, the distance between the pair of fixed pieces 64 is narrowed as shown in FIG. This is caused by pushing the fixing pieces 64 so that the distance between them becomes narrow at the root portion 67 where the claw 65 is wide as shown in FIG. In this state, when the attachment case 33 is to be attached to the front cover 19 as described above and is brought close to the front cover 19, the fixing piece 64 is located in the flange of the hook-shaped attachment case 33 as shown in FIG. The fixing case 64 can be approached without being obstructed, and the mounting case 33 can be mounted at a predetermined position of the front cover 19.
[0024]
However, in a state where the pre-filter 55 is not attached to the front cover 19, the pair of fixed pieces 64 has a large interval as shown in FIG. Therefore, even if the mounting case 33 is to be mounted on the front cover 19 in this state, the side wall 68 corresponding to the side surface of the flange of the hook-shaped mounting case 33 hits the tip of the fixing piece 64 as shown in the figure, and the fixing piece 64 The mounting case 33 cannot be mounted at a predetermined position on the front cover 19 because it is in the way.
[0025]
As described above, the attachment case 33 cannot be attached to the front cover 19 unless the pre-filter 55 is attached. This is because a high voltage is applied between the discharge line 31 attached to the attachment case 33 and the counter electrode 32. When discharging, the pre-filter 55 is always attached, and the pre-filter 55 removes cotton dust and insects contained in the outside air sucked from the first air intake hole 20 of the front cover 19. This is to prevent the discharge efficiency from being deteriorated by adhering to the discharge line 31 or the counter electrode 32 or causing abnormal discharge.
[0026]
The above is a description of the discharge line side of the ion wind generating unit. Now, the counter electrode side will be described. A square metal counter electrode 32 is attached to the front case 2 so as to face the slit 20 of the front cover 19. A contact piece 70 that is inserted into the front case 2 and applied with a positive high voltage is bent at the upper end of the counter electrode 32 as shown in FIG. A rib 71 projects from the front case 2 so as to surround the counter electrode 32, and a wall 59 projecting from the front cover 19 is fitted to the outside of the rib 71 as shown in FIG. A large number of horizontally long slit-shaped first exhaust holes 72 are formed in the wall 59 (see FIGS. 2 and 4). A large number of horizontally elongated second suction holes 73 are formed outside the ribs 72 of the front case 2.
[0027]
The counter electrode 32 is attached with a dust collecting paper 74 serving as a first dust collecting portion having electrical insulation. The dust collecting paper 74 is similar to kitchen paper. The dust collecting paper 74 is pressed by pressing plates 75 and 75 at the upper and lower sides thereof so as not to be detached from the counter electrode 32. As shown in FIG. 23, the pressing plate 75 is rotatable by pivotally supporting shafts 76 protruding from the left and right ends thereof on bearings 77 provided on the ribs 71. Further, a spring 78 wound around the shaft 76 is constantly biased in a direction in which the dust collecting paper 74 is pressed against the counter electrode 32. By rotating the pressing plate 75 against the urging force, the dust collecting paper 74 can be removed from the counter electrode 32 and replaced.
[0028]
A high voltage terminal 81 to which a negative high voltage is supplied from the high voltage generator 80 is provided above the counter electrode 32 of the front case 2 (see FIGS. 14 and 16). When the front cover 19 with the mounting case 33 attached is attached to the front case 2, the terminal plate 34 connecting the upper end of the discharge line 31 contacts the high voltage terminal 81 as shown in FIGS. A high voltage is applied. A positive high voltage from the high voltage generator 80 is supplied to the contact piece 70 of the counter electrode 32.
[0029]
By the way, the negative high voltage terminal 81 and the contact piece 70 to which a positive high voltage is supplied are covered with a protective cover 84 attached to the back surface of the front case 2 as shown in FIG. Both 81 and 70 are partitioned by the formed partition wall 85. If it is not covered with the protective cover 84, dust adheres to the high-voltage terminal 81 and the contact piece 70, or dust enters between the two, and due to the influence of these attached or intruding dust, the both 81, 70. Although there is a risk of causing a discharge between the two, the cover 84 prevents the dust from adhering or entering between the two to prevent such a discharge. Even if some dust adheres or invades, by partitioning with the partition wall 85, the creepage distance between the two 81 and 70 is lengthened to make it difficult for discharge to occur.
[0030]
In addition to preventing the discharge between the high-voltage terminal 81 and the contact piece 70 in this way, the cover 84 has its upper part 86 bulging inward as shown in FIG. 1 and the frame 15 of the second dust collecting part 12. By abutting, it also serves as a guide when the second dust collecting portion 12 is taken in and out of the outlet 17.
[0031]
The first safety switch 53 is provided below the front case 2 and is operated by the operation piece 54 protruding from the lower end of the mounting case 33 as described above. In addition, a second safety switch 83 is provided on the upper part of the front case 2 and is operated by an operation piece 82 protruding from the upper part of the rear surface of the front cover 19 (see FIG. 16). This safety switch 83 is for turning off all power when the front cover 19 is removed from the front case 2.
[0032]
FIG. 20 shows an electric circuit diagram. An energization circuit 89 from the power plug 87 to the electric motor 6 via the second safety switch 83 and the main switch 88 and an energization circuit 90 to the high voltage generator 80 are connected in parallel. A fan operation switch 91 is inserted in the energization circuit 89 to the electric motor, and an ion operation switch 92 and the first safety switch 53 are inserted in the energization circuit 90 to the high voltage generator. The main switch 88, the fan operation switch 91, and the ion operation switch 92 are provided on the operation panel 93 provided on the upper surface of the front case 2.
[0033]
Next, the operation will be described. When the main switch 88 is turned on and the ion operation switch 92 is turned on, the high voltage generator 80 operates to apply a negative high voltage, for example, a voltage of −7 KV to the discharge line 31, and a positive high voltage is applied to the counter electrode 32. A voltage, for example, +7 KV is applied. On the other hand, the electric motor 6 is not energized and the fan 8 does not rotate.
[0034]
As a result, a corona discharge is generated between the discharge line 31 and the counter electrode 32 to generate an ion wind. This ion wind draws outside air from the first intake hole 20 of the front cover 19, and dust contained in the sucked air is negatively charged in contact with gas ions and electrons generated by discharge, and has a high potential. The dust is moved toward the electrode 32 and the charged dust adheres to the dust collecting paper 74 attached to the counter electrode 32. The air from which the dust has been removed is discharged from the plurality of horizontally elongated first exhaust holes 72. In FIG. 2, an arrow A indicates the air flow at this time.
[0035]
Here, the discharge air line 31, the counter electrode 32, the dust collecting paper 74, the front cover 19, and the like constitute an ion wind type air purifying means that sucks outside air with ion wind and removes dust in the dust collecting portion and then exhausts the air. To do. In this case, since the air flow is attracted only by the ionic wind, it is small and the dust collecting ability is inferior. However, the room air can be kept clean without feeling the noise caused by the rotation of the fan 8 or the cold caused by the air blowing. . Therefore, the operation is suitable when the air is slightly contaminated or when the temperature is low.
[0036]
If nothing is present between the discharge line 31 and the counter electrode 32 when the ion wind type air purification means is operated, the discharge generated between the two is the shortest discharge distance between the discharge line 31 and the counter electrode 32. Concentrated on the central portion of the counter electrode 32, and as a result, the dust is adsorbed by concentrating on the central portion of the dust collecting paper 74, and the central portion of the counter electrode 32 and the dust collecting paper 74 is likely to be deteriorated. There is a problem that the entire dust paper is not used effectively and the dust collection efficiency is poor.
[0037]
Therefore, in order to solve this problem, the flange-like mounting case 33 to which the discharge wire 31 is attached is placed at a position where the surface 95 corresponding to the bottom of the flange obstructs the shortest discharge distance between the discharge wire 31 and the counter electrode 32. It is attached to the front cover 19 so as to be twisted. That is, the surface 95 serves as a shielding portion that shields the shortest discharge distance between the discharge line 31 and the counter electrode 32. Then, the side walls 68 corresponding to both sides of the shielding portion 95, that is, the side surfaces of the ridges are made uneven (waved) as shown in FIG.
[0038]
With such a configuration, the portion immediately behind the discharge line 31 with a short discharge distance where the discharge tends to concentrate is blocked by the shielding portion 95, so that the concentration of discharge is avoided and the discharge is made uniform. Further, due to the uneven side wall 68, the side wall 68 also acts as a shielding portion, and this shielding portion alternately forms a portion that makes the shielding stronger (convex portion) and a portion that makes the shielding weaker (the concave portion). Depending on the position, the discharge between the discharge line 31 and the counter electrode 32 is made strong and weak. As a result, the discharge is diffused throughout the counter electrode 32 to make the discharge more uniform.
[0039]
FIG. 21 shows the state of this discharge, and the prefilter 55 and the prefilter fixing plate 62 are omitted for easy understanding. In the figure, arrow A shows the state of discharge, and arrow B shows the state of the outside air sucked by the ion wind.
[0040]
As a result, the dust is adsorbed to the entire dust collecting paper 74, the dust collecting paper can be effectively used, the dust collecting efficiency can be improved, and the number of replacement of the dust collecting paper 74 can be reduced. Furthermore, concentration deterioration at the central portion of the counter electrode 32 and the dust collecting paper 74 can be reduced.
[0041]
By the way, if air sucked from the first intake hole 20 of the front cover 19 contains cotton dust or small insects, these adhere to the discharge line 31 or the counter electrode 32, and the discharge efficiency decreases. Although an abnormal discharge may occur, the mounting case 33 to which the discharge wire 31 is attached cannot be mounted at a predetermined position on the front cover 19 unless the prefilter 55 is mounted on the front cover 19 as described above. When discharging, the pre-filter 55 is always attached, and cotton pride, insects, etc. are removed beforehand, so that there is no possibility that the discharge efficiency is lowered or abnormal discharge is caused.
[0042]
This can be applied to the case where the fan is rotated and forcedly sucked by the fan in addition to the ion wind, in addition to the case where the outside air is sucked from the intake hole 20 only by the ion wind. Furthermore, the air can be mainly applied to an air purifier that mainly sucks the outside air and charges the sucked outside air.
[0043]
Next, when the fan operation switch 91 of the operation panel 93 is turned on, the high voltage generator 80 does not operate, and a high voltage is not applied to the discharge line 31 or the counter electrode 32. On the other hand, the electric motor 6 is energized and the fan 8 rotates. As a result, air is no longer sucked by the ion wind, and instead passes through the plurality of horizontally elongated second suction holes 73 from between the front cover 19 and the front case 2 as indicated by an arrow B in FIG. Outside air is sucked, passes through the second dust collecting portion 12, passes through the inside of the fan casing 9, and is exhausted into the room through the second exhaust hole 11. In this process, dust contained in the sucked air is captured and purified by the second dust collecting unit 12.
[0044]
In this case, the fan type air purifying means is constituted by the second dust collecting unit 12, the fan 8, the electric motor 6, etc., and the fan type air purifying means is operated to forcibly circulate the indoor air by the fan and to produce a large amount of air. Since the circulating air volume is obtained, dust can be efficiently removed by the second dust collecting unit 12. Therefore, this operation is suitable when the air in the room is dirty or when the air in a large room is purified.
[0045]
In this case, a large amount of air is guided to the back side of the front case 2 through the second intake hole 73, and dust tends to adhere to the negative high voltage terminal 81 and the positive contact piece 70 there. Thus, since these are covered with the cover 84, intrusion and adhesion of dust are prevented.
[0046]
In this way, the ion operation and the fan operation can be selected as appropriate, and a desired operation can be performed in accordance with the degree, size, temperature, etc. of the room. If the ion operation switch 92 and the fan operation switch 91 are closed at the same time, the ion operation and the fan operation can be performed simultaneously.
[0047]
As can be seen from the circuit diagram of FIG. 20, if the front cover 19 is attached to the front case 2 with the mounting case 33 removed from the front cover 19, the first safety switch 53 cannot be closed. Although the high voltage generator 80 does not operate, the second safety switch 83 is closed by the operation piece 82, so that the fan 8 can be rotated by the electric motor 6. In other words, the ion wind type air purification means cannot be operated, but the fan type air purification means can be operated to operate the fan. Accordingly, even if the mounting case 33 is forgotten or lost or the discharge wire 31 is disconnected and the mounting case 33 cannot be mounted, the fan-type air purifying means is operated at least to clean the air. Can be
[0048]
Maintenance of the dust collecting paper 74 and the discharge wire 31 is performed as follows. When the dust collecting paper 74 is replaced, the front cover 19 is removed from the front case 2, but if the front cover 19 is removed, the discharge line 31 is also attached. 31 does not get in the way and is easy to work. On the other hand, since the contact between the terminal plate 34 and the high-voltage terminal 81 is separated from the removed discharge line 31, no negative high voltage is supplied, and it is safe to touch the discharge line. As a result, the second safety switch 83 and the first safety switch 53 are opened to stop the operation of the high voltage generator 80, so that no positive high voltage is applied to the counter electrode 32 and the dust collecting paper 74 is replaced. It can be done safely.
[0049]
Moreover, although dust also adheres to the discharge wire 31 and the mounting case 33 and needs to be cleaned, the mounting case 33 can be easily removed by lifting the elastic piece 36 upward and removing the claw 50 from the engaging hole 48. The discharge wire 31 can be easily removed from the mounting case 33 by removing the spring 44 from the key-like claws 42 and 43 of the terminal plate 34 and the reinforcing plate 37. Therefore, the discharge wire 31 and the mounting case 33 can be removed. Can be easily cleaned.
[0050]
【The invention's effect】
According to the present invention, when a high voltage is applied between the discharge electrode (discharge line in the embodiment) and the counter electrode to generate a discharge, the discharge electrode is provided in the main body unless the prefilter is disposed in the main body. At the position ofNot possible and the high voltage generator does not workTherefore, when it is forgotten to attach the prefilter, it is impossible to generate a discharge by applying a high voltage between the discharge electrode and the counter electrode. In other words, when discharging, a pre-filter is always attached, where cotton pride and insects are removed beforehand, and these adhere to the discharge electrode and the counter electrode, thereby reducing discharge efficiency and abnormal discharge. It does n’t happen.Moreover, unless a prefilter or a discharge electrode is mounted at a regular position, a high voltage is not applied to the discharge part and it is safe.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing the entire air cleaner of the present invention.
FIG. 2 is a cross-sectional view showing the entire air cleaner.
FIG. 3 is a front view showing the entirety of the air cleaner.
FIG. 4 is a right side view of the entire air cleaner.
FIG. 5 is a plan view of the entire air cleaner.
FIG. 6 is a longitudinal sectional view showing a mounting case equipped with a discharge wire of the air cleaner.
FIG. 7 is an exploded longitudinal sectional view of the upper part of the mounting case and the terminal plate of the air cleaner.
FIG. 8 is an exploded longitudinal sectional view of a lower part of the mounting case and a reinforcing plate of the air cleaner.
FIG. 9 is an exploded perspective view of a mounting case upper portion and a terminal plate of the air cleaner.
FIG. 10 is an exploded perspective view of the lower part of the mounting case and the reinforcing plate of the air cleaner.
FIG. 11 is an enlarged vertical cross-sectional view showing when the upper part of the mounting case of the air cleaner is mounted.
FIG. 12 is an enlarged longitudinal sectional view showing when the lower part of the mounting case of the air cleaner is mounted.
FIG. 13 is a back view showing the pre-filter in broken lines on the back side of the front cover of the air cleaner.
FIG. 14 is a front view of the main body case with the front cover removed from the air cleaner.
15 is a cross-sectional view based on the line AA in FIG. 14 when the front cover is attached.
16 is a cross-sectional view based on the line BB in FIG. 14 when the front cover is attached.
FIG. 17 is an enlarged cross-sectional view showing the relationship between a pre-filter attached to the front cover and a mounting case.
FIG. 18 is an enlarged cross-sectional view showing a state where a pre-filter having the same relationship is removed.
19 is a cross-sectional view based on the line AA in FIG.
FIG. 20 is an electric circuit diagram of the air cleaner of the present invention.
FIG. 21 is a sectional view showing a discharge state of the discharge line and the counter electrode of the air cleaner.
22 is a cross-sectional view showing a portion where the front cover is attached to the front case based on the line AA in FIG. 3; FIG.
23 is an enlarged view of the inside of a circle C in FIG. 14 showing a state of attachment of dust collecting paper of the air cleaner of the present invention.
[Explanation of symbols]
1 Body case
19 Front Cover
31 Discharge wire (discharge electrode)
32 Counter electrode
20 First intake hole (intake hole)
74 Dust collection paper (dust collection part)
72 First exhaust hole
55 Prefilter
33 Mounting case
62 Pre-filter fixing plate
64 fixed pieces
65 nails
66 Through-hole
80 High voltage generator
53 Safety switch
54 Operation piece

Claims (2)

A high voltage generated by a high voltage generator is applied between a discharge electrode and a counter electrode provided in the body to generate a discharge, and an ion wind is generated by this discharge, and dust in the outside air sucked from the intake hole As long as the pre-filter that preliminarily captures dust contained in the outside air sucked from the intake hole is disposed in the main body, and the pre-filter is not disposed. An air cleaner that prevents the discharge electrode from being mounted at a predetermined position in the main body and prevents the high-voltage generator from operating unless the discharge electrode is mounted at the predetermined position . The discharge electrode is attached to the main body via a mounting case, and a pre-filter fixing plate that is engaged with the pre-filter and is attached to the main body is fixed to the main body, and the pre-filter is fixed to the fixing plate. 2. The air cleaner according to claim 1 , wherein the fixing plate is deformed so as to be retracted to a position that does not interfere with the attachment of the mounting case to the main body by engagement .

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