JPH0236610Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to an air purifier for removing oil and smoke, and more specifically, it is used at dining tables where large amounts of oil and smoke are produced, such as grilled meat and grilled fish. The present invention relates to an air cleaner for removing oil and smoke, which is used in a kitchen or kitchen, and is characterized by being able to collect exhaust smoke together with oil without spreading it to the surroundings.

[Prior Art] Generally, a large amount of smoke and oil is generated in a grilled meat restaurant or the like, so the smoke and the like are removed by a ventilation fan having a filter attached to an exhaust duct.
Furthermore, recently, air purifiers that utilize corona discharge have been used instead of the above-mentioned filters.

[Means for Solving the Problems] However, in the former case, that is, a ventilation fan having a filter, oil as well as smoke adheres to the filter, which causes clogging to occur quickly, and therefore smoke cannot be removed sufficiently. Furthermore, even in the latter case, that is, an air purifier that utilizes corona discharge, oil adheres to the dust collecting electrode, which causes a problem in that the ability to collect smoke particles decreases in a short period of time.

[Means for solving the problem] This idea was created in view of the above-mentioned circumstances. In order to solve the above-mentioned problem, after charging oil particles and smoke particles using corona discharge, To provide an air cleaner for removing oil and smoke, which is characterized in that it actively collects oil particles and separately collects only large oil particles.

That is, this invention includes: an air purifier main body that opens downward and has an air outlet at the top; an oil tray that is arranged in the center of the opening and forms a suction opening between the opening; a discharge counter electrode having a plurality of small holes that partition the suction port and the oil receiving tray; a discharge electrode having a pointed discharge needle located at the center of each small hole protruding from the outside of the discharge counter electrode;
An oil/smoke removal device comprising a dust collecting section disposed above the oil receiving tray and having an air flow path in the vertical direction, and an air supply fan disposed at the air outlet. The aim is to provide an air purifier for

In this invention, the discharge electrode may be a plurality of independent discharge needles located at the center of each small hole of the discharge counter electrode, but the discharge electrode may be a plurality of independent discharge needles located at the center of each small hole of the discharge counter electrode. It is preferable to configure it with a row or a plurality of rows of pointed discharge needles, or with a plurality of pointed discharge needles protruding parallel to each other from a concentric portion of a ring-shaped base. In addition, the dust collecting section may include a sheet made of sheets having at least conductive surfaces wound spirally so as to be spaced apart from each other, or a plurality of cylinders having at least conductive surfaces arranged concentrically. is used. In this case, if the dust collecting part is configured with a spirally wound part, the dust is collected using a dust collecting film and conductive paint surfaces of different polarities formed on both sides of the dust collecting film. Preferably, it constitutes a section. In addition, when the dust collection section is configured with a conductive cylinder, the cylinder is configured with a dust collection electrode and a dust collection counter electrode, and these dust collection electrodes and dust collection counter electrodes are arranged concentrically in an alternating manner. It is preferable to do so. Furthermore, the discharge counter electrode may have any shape as long as it partitions the suction port and the oil receiving tray, but it is preferable to form it as a conical or arcuate ring with a large diameter at the bottom.

On the other hand, there may be one or more air outlets, but in either case, it is preferable to arrange an air supply fan at each outlet.

[Effect] The above technical means works as follows.

When the air supply fan is driven, air is sucked into the air purifier body from the suction port at the bottom, and this air passes through the small holes in the discharge counter electrode and the air flow path in the dust collection section, and is then discharged from the air outlet. When passing through the small holes of the discharge counter electrode, oil particles and smoke particles in the air are charged by the voltage applied to the discharge electrode and the discharge counter electrode, and are collected in the dust collection section and become purified air. only is discharged from the air outlet. Also, among the oil collected in the dust collecting section, large oil particles fall due to their own weight and are caught by the oil receiving tray below.

[Example] An example of this invention will be described below based on the drawings.

Fig. 1 is a perspective view showing a part of the first embodiment of the air purifier of this invention in cross section, and Fig. 2 is a front view showing the main part in cross section. A substantially dome-shaped air purifier main body 10 having an opening 11 facing toward the user and a plurality of air outlets 13 provided at the upper part; An oil receiving tray 14 forming a doughnut-shaped suction port 12, a discharge counter electrode 20 having a plurality of small holes 22 that partition the suction port 12 and the oil receiving tray 14, and each small hole 22 from the outside of the discharge counter electrode 20. a discharge electrode 21 having a pointed discharge needle 23 located at the center thereof; a dust collecting section 30 disposed above the oil receiving tray 14 and having an air flow path 31 in the vertical direction; and each of the above air outlets. 13 and an air supply fan 40 disposed in the air supply fan 13.

The discharge counter electrode 20 is formed of a conical or arcuate ring with a large diameter at the bottom. In this case, the discharge counter electrode 20 is formed of, for example, an aluminum alloy or a synthetic resin member whose surface including at least the small holes 22 is coated with a conductive metal. Further, the discharge electrode 21 includes a ring-shaped base 25 and one or more rows that protrude concentrically from the ring-shaped base 25 and whose tips are located at the center of each small hole 22 of the discharge counter electrode 20. It is composed of a pointed discharge needle 23. The discharge electrode 21 is made of a strong conductive metal such as stainless steel, ordinary steel, copper, brass, or aluminum. In this case, the discharge electrode 21 is connected to the cathode of the power source 50, and the discharge counter electrode is connected to the anode of the electrode 20. When a voltage is applied between the discharge electrode 21 and the discharge counter electrode 20, corona discharge occurs between them. It is starting to occur. In this case, the discharge electrode 21 and the discharge counter electrode 20 may have opposite polarities to perform anodic discharge. Such a corona discharge is, for example,
4.5~ obtained by transforming household alternating current (100V) using the high voltage generator 52 and rectifying it.
Can be done with 5KV, 0.01~1mA DC current.

On the other hand, as shown in FIG. 4, the dust collecting section 30 has a structure in which sheets 32, at least the surface of which is conductive, are spirally wound so as to be spaced apart from each other. In this case, the sheet 32 is, as shown in FIG. 5, provided with a conductive surface 34 on one side of a sheet body 33 made of, for example, polyethylene or vinyl chloride by aluminum vapor deposition, coating or printing with conductive paint, and, It has a structure in which a plurality of protrusions 35 are protruded at appropriate intervals on both sides of the surface on which the conductive surface 34 is provided to maintain a distance between adjacent parts. In this case, the center of the dust collecting section 30 is held by inserting one end of the sheet 32 into a slit (not shown) provided along the shaft 15 rising from the center of the oil receiving tray 14. It is in a state of being Further, as shown in FIGS. 8 to 10, the spiral dust collection section 30 has a dust collection film slit 15a and a shield film slit provided on the shaft 15 located at the center of the oil tray 14. The dust collecting film 30a and the shielding film 30b may be sandwiched between the dust collecting film 30a and the shielding film 30b. In this case, conductive paint surfaces 30d and 30e of opposite polarity are coated on both sides of the dust collecting film 30a, and each conductive paint surface 30d and 30e is drawn out at the end on the sandwiching side.
is formed so as to be connectable to positive or negative conductors 15c and 15d provided on the shaft 15. Incidentally, a plurality of projections 35 for maintaining intervals are protruded from both sides of the dust collecting film 30a at appropriate intervals.

The dust collecting section 30 does not necessarily have to have the above structure; for example, as shown in FIG. good. In this case, the cylinder 36
may be a conductive metal such as aluminum or stainless steel, or may be one in which a conductive metal such as aluminum is vapor-deposited or adhered to the surface of a synthetic resin substrate such as polyethylene. In this case, each cylinder 36 may have a polarity opposite to that of the discharge electrode 21, but adjacent cylinders 36 may be formed of a dust collecting electrode and a dust collecting counter electrode having different polarities,
That is, by making the dust collection electrode the same polarity as the discharge counter electrode 20 and the dust collection counter electrode the same polarity as the discharge electrode 21, it is possible to further improve the dust collection efficiency. In addition, as shown in FIG. 7, the dust collecting section 30 can be formed by laminating a plurality of conductive sheets in sequence with a distance between each other. In this case, the sheets are formed of a flat sheet 37 and a corrugated sheet 38, and By using one side (specifically, the corrugated sheet 38) as a dust collection electrode and the other side (specifically, the flat sheet 37) as a dust collection counter electrode, it is possible to improve the dust collection efficiency.

Further, the air supply fan 40 is formed of an axial fan disposed within each outlet 13 in parallel to the opening direction of the outlet 13. Further, the oil receiving tray 14 is arranged in the air cleaner body 10 and can be taken out from the opening side of the air cleaner body 10.
As shown in FIG. 2, the discharge counter electrode 20 is fixedly held by a movable stopper 27 attached to the lower surface of an inward flange 26 that is bent inward from the lower end of the skirt portion 24 extending downward. It's getting old. Note that the discharge counter electrode 20 is fixed to a partition wall 16 that divides the interior of the air purifier main body 10 into upper and lower sections.

Figure 3 shows a second embodiment of this invention.
Air outlet 13 is provided in the circumferential direction of the upper part of the air purifier main body 10.
and one air supply fan 40 at the top inside the main body.
This is the case when the is installed. By forming in this way, the number of air supply fans 40 can be reduced, and the air can be efficiently purified with one air supply fan 40.

11 and 12 show a third embodiment of this invention, in which a discharge counter electrode 20 is formed into a flat plate shape and arranged horizontally on the upper surface of the oil receiving tray 14, and a discharge electrode 21 a ring-shaped base 25 and a plurality of pointed discharge needles 23 that protrude downward from the concentric portion of the ring-shaped base 25 in parallel with each other.
This is the case where it is configured with. In this way, the discharge electrode 21
By forming the discharge counter electrode 22, the structure of the discharge section and the entire air cleaner can be simplified. Note that in the third embodiment, other parts are the same as those in the first or second embodiment, so the same parts are given the same reference numerals and the explanation thereof will be omitted.

The air purifier of this invention configured as described above is used, for example, by being installed above the table in a grilled meat restaurant or in the ventilation opening of the kitchen. In this state,
When the air supply fan 40 is driven, smoke generated during grilling, etc. is sucked into the air purifier main body 10 from the suction port 12, and then passes through the small hole 22 of the discharge counter electrode 20 to the air flow of the dust collection section 30. It passes through the passage 31 and is discharged from the outlet 13, but the discharge counter electrode 20
When passing through the small holes 22, the smoke particles and oil particles flowing with the smoke are charged by corona discharge due to the voltage applied to the discharge electrode 21 and the discharge counter electrode 20, and the charged smoke particles are collected. When passing through the air flow path 31 of the part 30, it is collected by the dust collection part 30,
Only purified air is discharged from the outlet 13. Also, among the oil collected in the dust collecting section 30, large oil particles fall due to their own weight and are deposited in the oil receiving tray 1.
It is accepted within 4. Therefore, the collection efficiency of the dust collector 30 does not decrease over a long period of time, and a large amount of smoke and the like can be continuously collected.

[Effect of the invention] As explained above, according to this invention, an oil receiving tray and a discharge counter electrode are sequentially installed from the bottom in the flow path that communicates the suction port provided at the bottom with the suction port provided at the top. Since a discharge electrode and a dust collecting section having an air flow path in the vertical direction are provided, the following effects can be obtained.

1. Smoke and oil generated during cooking can be collected without being discharged to the surrounding area or outdoors, and only clean air can be supplied indoors.

2. Even if the oil is collected in the dust collector, it falls into the oil receiving tray at the bottom, so the collection performance of the dust collector does not deteriorate and it can be used for a long time.

3. When replacing the oil tray or the dust collection part, the replacement can be done without causing any trouble to the discharge electrode or the discharge counter electrode, and cleaning of the discharge electrode is also easy, making maintenance easy.

4. There is a lot of smoke, especially when cooking grilled meat, etc., but even when cooking dishes where aroma is important, you can enjoy a delicious meal without feeling smoky.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional perspective view showing the first embodiment of the air purifier of this invention, Fig. 2 is a front view showing the main part in section, and Fig. 3 is a main view showing the second embodiment of this invention. FIG. 4 is a perspective view of the dust collecting section in this invention, FIG. 5 is a cross-sectional view taken from FIG. 4, FIG. 6 is a perspective view showing another form of the dust collecting section, and FIG. FIGS. 8 and 9 are an exploded side view and a plan view respectively showing the structure of the dust collecting part and its mounting manner, and FIG. FIG. 11 is a front view showing a main part in section of a third embodiment of this invention, and FIG. 12 is an exploded perspective view showing a discharge electrode and a discharge counter electrode in the third embodiment. . Code explanation, 10... Air purifier body, 11...
Opening, 12... Suction port, 13... Outlet port, 14...
... Oil receiving tray, 20 ... Discharge counter electrode, 21 ... Discharge electrode, 22 ... Small hole, 23 ... Pointed discharge needle, 2
5...Ring-shaped base body, 30...Dust collection part, 31a...
... Dust collection film, 30d, 30e ... Conductive paint surface, 31 ... Air flow path, 32 ... Sheet, 33 ...
... Sheet body, 34 ... Conductive surface, 35 ... Protrusion,
36...Cylinder, 37...Flat sheet, 38...
Wave-shaped sheet, 40... air supply fan.

Claims (1)

[Claims for Utility Model Registration] (1) A suction port is formed between an air purifier main body that opens downward and has an air outlet at the top and an opening located in the center of the opening. An oil receiving tray, a discharge counter electrode having a plurality of small holes that partition the suction port and the oil receiving tray, and a pointed discharge needle located at the center of each small hole protruding from the outside of the discharge counter electrode. It is characterized by being composed of a discharge electrode, a dust collection section disposed above the oil receiving tray and having an air flow path in the vertical direction, and an air supply fan disposed at the blowout port. Air purifier for removing oil and smoke. (2) Utility model registration claim 1, in which the discharge electrode is composed of a ring-shaped base and one or more rows of pointed discharge needles protruding concentrically from the ring-shaped base Air purifier for removing oil and smoke. (3) The utility model registration claim 1, wherein the discharge electrode comprises a ring-shaped base and a plurality of pointed discharge needles protruding parallel to each other from a concentric portion of the ring-shaped base. Air purifier for removing oil and smoke. (4) The air cleaner for removing oil and smoke according to claim 1, wherein the dust collecting section is formed by winding sheets having at least conductive surfaces in a spiral shape so as to be spaced apart from each other. (5) Utility model registration claim No. 1 in which the dust collecting section is composed of a spirally wound dust collecting film and conductive paint surfaces with different polarities formed on both sides of the dust collecting film. The air purifier for removing oil and smoke as described in item 1. (6) The oil/smoke removing air cleaner according to claim 1, wherein the dust collecting section comprises a plurality of concentrically arranged cylinders each having at least a conductive surface. (7) The dust collection section is composed of a plurality of cylindrical dust collection electrodes and dust collection counter electrodes each having at least a conductive surface, and these dust collection electrodes and dust collection counter electrodes are arranged concentrically in an alternating manner. An air purifier for removing oil and smoke as set forth in claim 1 of the utility model registration claim, which comprises: (8) Multiple outlets are provided on the air purifier body,
An air cleaner for removing oil and smoke according to claim 1, which comprises an air blowing fan disposed at each outlet. (9) The air cleaner for removing oil and smoke according to claim 1, wherein the discharge counter electrode is a conical or arcuate ring with a large diameter at the bottom.