JPH0244211B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to an electric grill for general household and commercial use, such as a yakiniku grill, a fish grill, an eel broiler, and a yakitori grill. It is.

The configuration of conventional examples and their problems In general homes and commercial use, the most commonly used appliances for cooking grilled foods are gas (city gas,
Equipment that uses propane gas (such as propane gas) is often used.

Charcoal burning with charcoal is still used for commercial purposes. In recent years, electric grillers have begun to appear in this field.

Compared to other gas-fired or charcoal-fired grills, electric grillers have advantages such as ease of operation, less smoke, and less pollution of the air in the room.

However, in this electric griller, conventional equipment had important deficiencies. In other words, when cooking meat and fish, salt is generated from these ingredients, and highly corrosive substances such as yakiniku sauce, soy sauce, and in some cases vinegar and lemon drip.
The heat generating part corroded at an early stage, leading to heater breakage and the equipment's functionality to stop.

Conventionally, a rod-shaped φ5 to φ10 mm Ni-Cr based heating element NCH1 class, which is relatively resistant to corrosion, is used as the heat source, and the commercial power supply of 100V or 200V is stepped down to 15 to 20V using a transformer. Was.
In other words, even if the heater became thin due to corrosion, it was covered by its thickness, and the voltage was varied by a transformer to maintain power consumption. There are also examples of using sheathed heaters directly, but SUS
Even if pipes made of heat-resistant and corrosion-resistant steel such as 316L and Incoloy 800 are used, their corrosion lifespan is short depending on how they are used, and in reality, they can last only a few months for commercial use.

Furthermore, the transformer type has a large body, making it difficult to save space and transport, and it is difficult to make a tabletop type.In addition, since a voltage of 15 to 20V is applied to the heat generating part, it is difficult to use for metal skewers, hibashi, etc. It also had a defect that could cause an electric shock or shot if hit. These heating elements also had a low emissivity of far infrared rays, which are said to be effective for cooking.

Purpose of the Invention The present invention solves the above-mentioned drawbacks, and provides an electric griller that is resistant to corrosion, does not require a transformer, is compact, has good operability and handling, and has a high far-infrared emissivity. be.

Structure of the Invention The present invention includes a wire mesh on which cooked foods such as meat, fish, vegetables, etc. are placed, a heating element consisting of a sheathed heater located at the bottom of the wire mesh, and a water plate located at the bottom of the heating element. The surface of the heating element is coated with a heat-resistant hollow.
This uses a sheathed heater coated with a ceramic coating layer that has both a corrosion-resistant coating and a far-infrared radiation coating.

DESCRIPTION OF EMBODIMENTS The case of a tabletop commercial griller will be described below with reference to the drawings.

The wire mesh 1 on which cooked foods such as meat and fish are placed is made of SUS3.
It is made by processing a round bar such as 04, and its shape may be the shape shown in the figure or a mesh shape. Below the wire mesh 1, there is a main body 2 on which it is placed, and the main body 2 includes a top plate 3, a heating element 4, a water plate 5 for receiving dripping water or sauce, a handle 6, a power control knob 7, and a power supply. It consists of an indicator lamp 8, a cord (not shown), and the like.

As shown in Figure 2, the heating element 4 has an NCH inside.
1. Heat generating wire 9 made by processing FCH2 etc. into a coil shape
It is a sheathed heater type consisting of an insulating powder 10 such as magnesia located around it, a tube-shaped metal pipe 11, a power outlet terminal, a glass seal (not shown), a ceramic coating layer 12, etc. be.

The metal pipe 11 is SUS304, SUS32,
Although NCF800, NCF600, etc. are used depending on the temperature conditions under which they are used, NCF800 is used in this embodiment.

Based on the manufacturing process of the sheathed heater, the surface of the sheathed heater pipe 11 which has gone through the steps of filling → rolling → annealing → bending press → etc. is treated with SiO ₂ -BaO-based heat-resistant hollow to form a ceramic coating film 12.
will be established.

The main component of the hollow agent is SiO ₂ -BaO, and it also contains Cr ₂ O ₃ , B ₂ O ₃ , NiO, etc. in order to adjust the coefficient of thermal expansion, far-infrared emissivity, adhesion at color working temperature, etc.
A heat-resistant hollow slip made by adding ZrO, Al ₂ O ₃ , CoO, MoO ₃ , etc. is used.

As an example of the hollow strip used, Fritz A: SiO ₂ 40%, BaO 40%, B ₂ O ₃ 6.5%,
ZnO5%, CaO4%, _{ZrO23 %} , _Al2O31
%, other frit B: SiO ₂ 40%, BaO 30%, TiO ₂ 10%,
B ₂ O ₃ 3%, CaO 4%, MoO ₃ 2%, alkali 3%, NiO 10%, etc. 80 parts of frit A, 25 parts of Cr ₂ O ₃ , clay 5,
3 parts CMC, 0.03 parts sodium nitrite, 50 parts water, or
Add 100 parts of Fritz B, 10 parts of NiO, 5 parts of clay, 50 parts of water, etc. to make a slip.

Thereafter, it was applied to the heater pipe 11 by spraying or dipping, and then fired at 950 to 1050°C for 5 minutes to form the ceramic coating layer 12.

The ceramic coating layer 12 may be applied two or three times if necessary, but the film thickness is basically
Approximately 100μ is preferable.

The electric griller is completed by attaching a necessary number of heating elements 4 thus produced to the main body 2 depending on the size of the device.

To use it as an electric grill, simply place meat, fish, vegetables, etc. on the grid 1, fill the water plate 5 with water, and turn on the electricity to grill food.

With this configuration, the heating element 4 has excellent corrosion resistance against salt, soybean oil, sauce, etc., is resistant to underwater wet corrosion, and efficiently radiates far infrared rays of 3 to 25μ, and is able to prevent meat, moisture, fat, etc. Since it has an absorption band in this wavelength range, it can also be expected to improve cooking efficiency and the taste of cooked foods due to the effect of far infrared rays, and it also enhances the delicious taste of charcoal grilling.

Effects of the invention The electric griller obtained in this manner has extremely high corrosion resistance due to corrosive substances dripping from above, and is far more operable, safer, and cleaner than gas-fired or charcoal-fired grills. It also has the characteristics of being more compact and safer than conventional electric types such as transformer types.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of the electric griller of the present invention, and FIG. 2 is an enlarged sectional view of section A in FIG. 1. 1... Wire mesh, 4... Heating element, 5... Water plate, 11
... Pipe, 12 ... Ceramic coating layer.

Claims (1)

[Claims] 1 It has a wire mesh on which food is placed, a heating element consisting of a sheathed heater located at the bottom of this wire mesh, and a water plate located at the bottom of this heating element, and the surface of the heating element is coated with SiO ₂ -BaO. An electric griller with a ceramic coating made of heat-resistant enamel as its main ingredient.