JPH10179412A - Hot plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove oil smoke generated by cooking by forming the fine piece of a thermoplastic resin to be a thin layer shape and arranging it on the cross section of a sucking flow path. SOLUTION: A circular and metallic plate 1 and a heater 2 heating it are supuported by a supporting body 3 and also the heater 2 and a lower part are thermally insulated by the supporting body 2. Then, an opening part 4 is formed in the center part of the metallic plate 1 so as to form a sucking port and a sucking means 5 is constituted of a centrifugal multiblade fan and a motor driving it. Besides, a circularly formed oil smoke removing filter 6 is made from unwoven cloth where the paperlike piece of a thermoplastic resin polyethylene terephthalate(PET) is formed to be the thin layer shape, for example. Oil smoke generated on the plate 1 is introduced to the opening part 4 by the sucking means 5, filtered by the oil smoke removing filter 6 and discharged from a discharge port 9 after passing through the sucking means 5 as clean air. Air which is not discharged from the discharge port 9 is guided to a plate peripheral upper part along a frame body 10 and discharged from the discharge port 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot plate for reducing the diffusion of fumes generated during cooking.

[0002]

2. Description of the Related Art When grilling meat using a hot plate at a dining table, generated oil smoke often scatters or diffuses into a room with an updraft and adheres to a ceiling or a wall. The attached oily smoke sticks over time and cannot be easily removed. Conventionally, for example, a ventilation fan is used to prevent the oil smoke from being trapped in the room. In the case of commercial use, suction means is provided on the upper or lower part of the plate or on the periphery to prevent diffusion of oily smoke.

[0003]

However, in the conventional method using a ventilation fan, when the distance between the ventilation fan and the hot plate is long, it is not enough to prevent the diffusion of the generated oily smoke. Oil smoke sticks to the ceiling and wall just above the plate. Further, the suction means used for business use has a large scale device and cannot be used as an appliance having a function of removing oil from a table at home.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is to solve the problems of the conventional structure, and uses a high-efficiency oil / smoke removal filter in which the material and structure of the filter are devised. Thus, a hot plate having a function of removing oily smoke generated during cooking is provided.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 has a suction means, and forms a thin strip of a thermoplastic resin in a thin layer.
The hot plate is disposed in the cross section of the suction flow path and effectively removes oily smoke.

According to a second aspect of the present invention, there is provided a hot plate as an oil smoke removing filter for applying a charging treatment to a thermoplastic resin to more effectively remove oil smoke by not only a collision effect but also an electrostatic force.

The third aspect of the present invention is a hot plate which is an oil smoke removing filter containing pulp as a material of the filter and having improved heat resistance.

[0008] The invention described in claim 4 is a hot plate as an oil smoke removal filter containing glass fiber as a material of the filter and further improving heat resistance.

According to a fifth aspect of the present invention, there is provided a hot plate as an oil smoke removing filter in which a filter shape is formed in a fold shape and a ventilation resistance is reduced without lowering a removing efficiency.

[0010] According to a sixth aspect of the present invention, there is provided a suction device comprising:
The hot plate has a layered product provided above the suction means and a porous layer provided further above the layered product. Thus, a hot plate having a porous layer in the upstream section and a two-stage oil smoke removing filter in the downstream section in the cross section of the suction flow path is configured to suppress clogging by oil droplets.

According to a seventh aspect of the present invention, the porous layer uses at least one of a foamed metal, a fibrous metal, a foamed ceramic, and a fibrous ceramic, so that the airflow resistance is not increased so much. The effect is realized.

[0012]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described with reference to FIG.
It will be described based on. FIG. 1A is a cross-sectional view of the hot plate of the present invention, and FIG. 1B is a plan view seen from above.

In FIG. 1, reference numeral 1 denotes a circular metal plate having a diameter of 45 cm and a depth of 3 cm in this embodiment. Reference numeral 2 denotes a heater for heating the metal plate 1, which uses a 1250W sheathed heater. Also, 3
Reference numeral denotes a support for the metal plate and the heater, which has a role of insulating the heater 2 from the lower part, and has a form in which the metal plate 1 is fitted. Reference numeral 4 denotes an opening having a diameter of 6 cm opened at the center of the metal plate 1 and forms a suction port. Reference numeral 5 denotes a centrifugal multi-blade fan having a diameter of 20 cm and a thickness of 3 cm, and a motor for driving the fan, which constitutes suction means.

Reference numeral 6 denotes an oil / smoke removal filter formed in a circular shape having a diameter of 20 cm and a thickness of 2 mm. In this embodiment, a non-woven fabric formed by forming thin pieces of thermoplastic resin polyethylene terephthalate (PET) into a thin layer is used. Rayon product number TA-450-2 is used. Reference numeral 7 denotes a support for fixing the filter 6.

Further, reference numeral 8 denotes a first exhaust port, 9 denotes a second exhaust port opened in the frame 7, and 10 denotes an air flow path which connects the exhaust from the suction means to the exhaust port 9. It is a frame that also served. The air flow on the plate is controlled by the ratio of the two exhausts 8 and 9. The arrows in the figure indicate the flow of the airflow.

The oil smoke generated on the plate is guided to the opening 4 by the suction means 5, then filtered by the oil smoke removal filter 6, becomes clean air, passes through the suction means 5, and is discharged from the exhaust port 9. The air that has not been exhausted at the exhaust port 9 is guided along the frame 10 to an upper portion around the plate, and is exhausted from the exhaust port 8. The air exhausted from the exhaust port 8 is used to direct oil smoke generated on the plate, particularly at the end of the plate, to the central suction port, between which an air curtain is formed to effectively collect smoke. is there.

Hereinafter, an experimental result for confirming the performance of capturing oil smoke when actually performing grilled meat cooking using the hot plate of the present embodiment will be described.

The cooking conditions at this time were such that the surface temperature of the metal plate 1 was set at 250 ° C., and cooking was performed using 600 g of beef, 600 g of vegetables such as sprouts, and 10 g of tallow. The amount of suction from the suction port 4 was controlled to 0.6 m ³ / min by controlling the voltage applied to the motor that drives the centrifugal multiblade fan. By adjusting the exhaust ratio of 8 and 9 to 2: 1, that is, 0.4 m ³ / min from the exhaust port 8 and 0.2 m ³ / min from the exhaust port 9, the oil and smoke flow on the plate is most efficiently controlled. The smoke was collected at the suction port 4. At this time, the average airflow velocity passing through the filter 6 is about 32 cm / sec.

The filter 6 was 5.0 g before use and increased to 10 g after use. In other words, 5 g of oil smoke generated from grilled meat was captured, and the diffusion of oil smoke into the room was suppressed.

This is because, by forming the fibers of the thermoplastic resin strip into a layer, the incoming oil smoke collides with the strip, loses momentum and is captured in the nonwoven fabric. Then, the purified air that has lost the oily smoke passes between the strips. By forming the strip fibers into a layered form as described above, the oily smoke is filtered and the clean air passes through, so that the filter is optimal as an oily smoke removing filter. Here, PET is used as the resin, but a resin such as polypropylene or polyamide may be used.

Other filter materials include thermosetting resins and metals, but thermosetting resins are generally unsuitable for processing filters and are expensive. In addition, in the case of metal fibers and foam metal for removing oil droplets,
If used as it is, the gaps and pore diameters are too large, so that it has the effect of removing oil mist and oil droplets, but is not effective in removing oil smoke of 10 microns or less.

(Example 2) Next, as the filter 6, a non-woven fabric in which strips of a thermoplastic resin polypropylene having been subjected to an electrification treatment are formed in a layer shape, here, Sumitomo 3M, product number G
A similar experiment was performed using -150.

The weight was also 5.0 g before use, but 12 g after use, which means that 7 g of oil smoke was captured, indicating that the removal effect was improved.

An experimental example for clarifying the difference from the first embodiment will now be described. This experiment was performed using the experimental apparatus shown in FIG. That is, the hot plate 21 is disposed in the measuring tool 22 so that the oil motor generated from the hot plate 21 does not leak to the surroundings of the suction motor 24.
Is operated to collect in the central cylindrical portion of the measuring tool 22. The arrows in the figure indicate the flow of the airflow.

The collected oil smoke is captured by a filter 23 fixed to the cross section of the flow passage in the cylinder, purified, and then rises and passes through a suction motor 24. The suction motor 24 was controlled so that the filter passage speed was 32 cm / sec.

A tube 25 for sucking the sample oil smoke was inserted into the cylindrical portion and suction was performed. The number of particles contained in the sucked oil smoke was measured and counted by the measuring device 26. By measuring before and after passing through the filter, the removal rate at each oil smoke particle size is calculated.

Here, as the measuring device 26, a particle counter KC-01C manufactured by Rion and a 10-fold dilution device KD-01 are used. In this manner, grilled meat was prepared on the plate 21 with 200 g of beef, 200 g of vegetables and 20 cc of salad oil, and measured and counted 20 times at 50 cc / min for 30 seconds at 1 minute intervals from the start of cooking. Here, Table 1 shows the removal rates of the nonwoven fabric used in Example 1 and the nonwoven fabric subjected to the charging treatment used in Example 2 by oil particle size.

[0028]

[Table 1]

As shown in (Table 1), in the case of particles of 5 microns or more, both of Examples 1 and 2 show a 100% removal rate, but the charging effect becomes remarkable as the particle diameter becomes smaller. Is shown. As described above, since the filter having the charging effect has not only the capture by collision but also the capture by electrostatic force, the removal rate of the oily smoke becomes more effective.

(Example 3) Next, results using a filter containing pulp will be described. Here, a filter made by Honshu Paper made of about 90% pulp and about 10% thermoplastic resin.
-70 was used.

When grilled meat was cooked in the same manner as in Example 1, the filter of 5.0 grams before use became 10 grams, and the capture of 5 grams was confirmed.

Here, when a similar experiment was conducted at a plate temperature of 300 ° C., the polypropylene charging filter used in Example 2 was melted, and holes were opened in several places.
The PET filter used in Example 1 was slightly reduced. At this time, the temperature of the airflow flowing into the filter was 100 ° C. or higher.

In comparison, the filter mainly composed of pulp used in Example 3 was slightly yellowed, but had no change in shape.

By including the pulp in this manner, the heat resistance is improved, and the pulp can be used safely even with a heat flow.

Example 4 Next, results using a filter containing glass fibers will be described. Here is about 40 pulp
%, A glass fiber about 30%, and a filter made by Oberist, which is about 30% such as a binder containing a thermoplastic resin, product number FC-800.

When grilled meat was cooked in the same manner as in Example 1, it was confirmed that 5.0 grams was reduced to 11 grams and that 6 grams were captured.

Here, the plate temperature is set to 300 ° C.
When an experiment was performed assuming an abnormal use in which the suction fan was stopped, the polypropylene charging filter used in Example 2 was melted and reduced to about 1/3, and the P filter used in Example 1 was used.
The ET filters also melted and shrunk. Further, the filter mainly composed of pulp used in Example 3 was also blackened, and a danger of ignition was felt. At this time, the filter ambient temperature was 200 ° C. or higher.

On the other hand, although the filter containing the glass fiber of the present embodiment turned yellow, there was no danger of ignition at all.

By including the glass fiber in this way, the heat resistance is further improved, and the glass fiber can be used safely even when exposed to an extreme temperature during abnormal use.

Example 5 Next, the filter mainly composed of pulp and glass fiber used in Example 4 was pressed by applying heat of about 130 ° C., and as shown in FIG. In the same manner, grilled meat was cooked in the same manner as in Example 1. At this time, a capture of 6 grams was also confirmed.

Although the ventilation resistance is high and the load on the fan motor is large in the fourth embodiment, the ventilation resistance is reduced by folding the folds as in the present embodiment.

FIG. 4 shows the results of measurement of the initial pressure loss when no folds were formed and when the folds were formed. From FIG. 4, 32 cm
Normal FC-800 without crease fold at a ventilation speed of / sec
In what was 15 mmH ₂ O it is, can be reduced to 6mmH ₂ O by the pleated. Thus, by reducing the airflow resistance, the load on the fan motor is reduced, and noise and power consumption are reduced.

(Embodiment 6) Next, an experiment for confirming the effect of forming a two-stage filter will be described. FIG. 5 shows a configuration diagram.
The numbers 1 to 10 are the same as in FIG. 11 is a 2 cm-thick fibrous aluminum (made of Alum) arranged at the suction port 4
The filter 6 is a foldable pulp used in Example 5 and a filter mainly composed of glass fiber (FC-80).
0). In this configuration, grilled meat was cooked in the same manner as in Example 1.

At this time, the capture of 3 g of the fibrous aluminum was confirmed, the capture of the fold filter was 3 g, and the capture of a total of 6 g was confirmed.

In Examples 1 to 5, not only oil smoke but also oil considered to be mist or oil droplets was found in the oil captured by the oil smoke removal filter, and the clogging was severe.
Eg, Example 5, the pressure loss Initial value 6mmH ₂ O is, after the experiment was increased to 10 mm H ₂ O, was an increase of 4mmH ₂ O.

On the other hand, with the two-stage structure of the fibrous aluminum and the fold-fold filter, almost no oil droplets and no mist were found on the fold-fold filter on the downstream side, and there was no clogging.

As shown in FIG. 4, the pressure loss also has an initial value of 6.5 mmH ₂ O, which is a two-stage structure composed of fibrous aluminum and a fold-fold filter. .0mmH not almost compared with ₂ O problem, and in the pressure loss after roast cooked was suppressed by an increase in 7.5MmH ₂ O next 1mmH ₂ O, 4mmH ₂ O when the pear
Of the increase.

This is thought to be because oil droplets and mist collide with the fibrous aluminum in the previous stage and are trapped in the former stage. Is not expected to increase much.

As described above, the filter has a two-stage structure, the porous layer is disposed on the upstream side, and large oil smoke, mist and oil droplets are removed on the upstream side, thereby suppressing clogging on the downstream side. An increase in pressure loss can be eliminated.

Further, the porous layer is not only a fibrous metal as in the present embodiment, but also has a slightly more aggressiveness than a downstream filter such as a foamed metal, a foamed ceramic, a fibrous ceramic, a heat-resistant resin mesh, or a metal mesh. The same effect can be realized if it is coarse.

[0051]

According to the first aspect of the present invention, since there is provided a suction means, the thin strips of the thermoplastic resin are formed in a thin layer, and are disposed in the cross section of the suction flow path, the oil smoke can be effectively removed. A hot plate to be removed can be obtained.

According to the second aspect of the present invention, since a charging process is performed on the thermoplastic resin, it is possible to obtain a hot plate having an oil smoke removing filter that more effectively removes oil smoke by not only a collision effect but also an electrostatic force. Can be.

According to the third aspect of the present invention, since pulp is contained as a material of the filter, a hot plate having an oil smoke removal filter with improved heat resistance can be obtained.

According to the fourth aspect of the present invention, since a glass fiber is contained as a material of the filter, a hot plate having an oil smoke removing filter with further improved heat resistance can be obtained.

According to the fifth aspect of the present invention, since the filter has a folded shape, it is possible to obtain a hot plate having an oil smoke removing filter with reduced air flow resistance without reducing the removing efficiency.

According to a sixth aspect of the present invention, there is provided:
A hot plate having a configuration in which clogging due to oil droplets is suppressed by using a hot plate having a layered product provided above the suction means and a porous layer provided further above the layered product. Can be obtained.

According to a seventh aspect of the present invention, by using at least one of a foamed metal, a fibrous metal, a foamed ceramic, and a fibrous ceramic for the upstream-side porous layer, the airflow resistance is not significantly increased. The effect of claim 6 is realized.

[Brief description of the drawings]

FIG. 1 (a) is a cross-sectional view showing the overall configuration of a hot plate according to an embodiment of the present invention. FIG. 1 (b) is a plan view of the hot plate.

FIG. 2 is a configuration diagram of an experimental apparatus for measuring the performance of a layered product of a hot plate of the present invention.

FIG. 3 is a perspective view of a fold filter that is a layered product of a hot plate according to a fifth embodiment of the present invention.

FIG. 4 is a diagram showing a pressure loss measurement of a filter which is a layered product of a hot plate according to a fifth embodiment of the present invention.

FIG. 5 is a sectional view of the entire configuration of a hot plate according to a sixth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plate 2 Heater 3 Support 4 Opening (suction port) 5 Fan motor (suction means) 6 Smoke removal filter 7 Support 8 First exhaust port 9 Second exhaust port 10 Frame 11 Porous layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukio Hayashida 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A hot plate, comprising: a suction means; and a layered product formed by forming thin pieces of thermoplastic resin in a thin layer, wherein the layered product is arranged in a cross section of a suction channel. 2. The hot plate according to claim 1, wherein the layered product is a resin subjected to a charging treatment. 3. The layered product contains pulp.
Or the hot plate according to 2. 4. The hot plate according to claim 1, wherein the layered product contains glass fibers. 5. The laminar product according to claim 1, wherein the layered product has a fold shape.
The hot plate according to any one of Items 1 to 4. 6. A hot plate having a suction means, a layered product provided above the suction means, and a porous layer provided further above the layered product. 7. The hot plate according to claim 6, wherein the porous layer has at least one of foamed metal, fibrous metal, foamed ceramic, and fibrous ceramic.