JP2010065991A - Energy reflecting dish - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein convection heat and radiation heat from a flame and conduction heat from a trivet can be used, while radiation heat emitted from the flame to the outside cannot be effectively used when heating a container by a gas burner of a gas heater. <P>SOLUTION: The dish-like or inverted conical energy reflecting dish made of a material having a high reflection ratio with respect to the radiation heat is provided with a bottom opening into which a carburetor of the gas heater is inserted in a center part of a dish bottom; and in the vicinity of the dish, a lower air supplying port in a lowermost end, and an upper air supply port in a center part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an energy saving device of a gas stove for heating food or the like.

In a gas stove or the like used at home, a flame directly hits a container such as a pan placed on the upper part of Gotoku and is heated. In this case, the energy for heating the container includes convection heat from the combustion gas, radiant heat radiated directly from the flame to the container, and conduction heat transmitted from the five virtues.
Conventionally, various devices have been made to use this convective heat.
For example, there is a type in which a dish-shaped part with a spiral projection on the inside is placed around the gas vaporizer so that the gas flow flows along this spiral and does not diffuse outside. In this case, since the gas flow is controlled, it is more effective to use the dish-shaped part closer to the gas flow. (See Patent Document 1)
Some gas vaporizers are covered with a cylindrical auxiliary tool to prevent the gas flow from diffusing outside. However, this method does not consider the effect of radiant heat for the purpose of preventing diffusion of convective heat. (See Patent Document 2)
Patent Publication 2008-32318 Patent Publication 10-339455

Problems to be developed by the invention

Therefore, there were the following problems.
About the efficient utilization method of a convection heat, various devices are made | formed for the combustion efficiency improvement like a patent publication example. Further, the radiant heat radiated directly from the flame toward the container is used in its entirety because of the container overheating.
However, the radiant heat radiated from the flame to the outside has not been used so far.
The present invention aims to increase energy efficiency by effectively utilizing not only convection heat but also radiant heat released to the outside of the flame.

Means for solving the problem

A dish-shaped or inverted frusto-conical reflecting dish made of a material highly reflective to radiant heat and with a smooth inner surface. There is a bottom opening in the center of the bottom where a gas burner vaporizer can enter. It is an energy reflecting tray provided with a lower air inlet at the lower end and an upper air inlet at the center.
Further, as an energy efficiency dish, the height of the reflector is extended to the vicinity of the end of the virtues, and the upper end of the energy reflector is cut off so that the virtues do not hit.

Best Mode for Carrying Out the Invention

The best mode for carrying out the present invention will be described below.
Before starting the explanation of this topic, the major differences in how to use convective heat and radiant heat will be described.
When convection heat is used as in the case of patents, the control plate is more efficient near the flame because the flow of gas is controlled.
On the other hand, when using radiant heat, the radiant heat from the flame is reflected on the container and used, so it is desirable to place the reflecting surface at a position away from the flame.
Of course, the material of the reflector is preferably a material having a high reflectivity with respect to radiant heat. For example, the reflectivity is about 75% for iron, but high purity aluminum, copper, or the like can obtain a reflectivity of 95 to 99% when the surface is a mirror surface.
In the gas stove used in a general household, the gas released from the fire pan 6 at the top of the vaporizer 5 becomes the flame 7, and this flame 7 directly hits the container 1 placed on the virtues 2 and becomes heating energy. The energy used for heating in this case is convection heat from the flame 7, radiant heat directly radiated from the flame 7 to the container 1, and conduction heat transmitted from the virtues 2.
However, although these heats are used as heat if they hit the container 1, most of the heat that is radiated or diffused outside the flame 7 is lost.
The present invention intends to effectively utilize the radiant heat and convection heat released to the outside of these flames 7.
As a utilization method thereof, FIG. 1 is a use state diagram of a gas stove generally used at home.
The present invention is a dish-shaped or inverted frustoconical energy reflecting dish 3 made of a material having a high reflectivity with respect to the radiant heat used between the gas top 4 and the five virtues 2 and radiates outward from the flame 7. The radiant heat is reflected by the energy reflecting plate 3 and then irradiated to the bottom and side surfaces of the container 1.
At the center of the bottom of the energy reflector 3, there is a bottom opening 10 that is large enough to accommodate the gas vaporizer 5. The bottom opening 10 is devised so that the energy reflector 3 can be positioned by simply placing it on the gas top 4 with the periphery of the gas vaporizer 5 as a guide. In addition, the inside of the bottom opening 10 is bent upward, but this is a device that does not reach the lower side of the gas top 4 even if the juice is spilled on the juice storage bank 13.
Since the radiant heat emitted from the flame 7 travels in many directions and linearly, the rising portion of the energy reflector 3 needs to completely surround the flame 7, and the radiant heat from the flame 7 is contained in the container 1. A shape that spreads toward the top so as to be reflected on the bottom and side surfaces is desirable.
In addition, it is more efficient if the shape of the bottom of the energy reflecting plate 3 is made almost horizontal and the radiant heat radiated downward from the flame 7 is reliably reflected by the container 1.
Simply placing the energy reflector 3 on the gas top 4 eliminates incomplete combustion due to insufficient supply of air and air supply from the side of the flame, which reduces the combustion efficiency.
In order to solve this problem, in the present invention, slit-like openings are provided in the lower and central portions around the energy reflector 3. The lower lower air inlet 8 is for supplying air sufficient for gas combustion, and needs to be provided below the pan.
However, since the air supply from the side is lost near the center of the flame, the flame spreads over the entire inner surface of the energy reflector 3 and it is difficult to form a normal flame. Since the reflection efficiency is lowered when the flame is diffused on the reflection surface, the present invention is provided with an upper air supply port 9 for supplying air also to the vicinity of the center of the energy reflector 3 to rectify the flame. .
In the present invention, the lower air supply port 8 and the upper air supply port 9 have a slit shape. This is because if the opening is simple, it is easy to clean, and air is surely supplied from the entire periphery. It only needs to be supplied, and it doesn't care about its shape.
Even if the height of the energy reflector 3 is as high as the lower end of Gotoku 2, it is possible to produce a considerable energy saving effect. In this case, the top of the energy reflecting plate 3 is easy to clean because there is no unevenness.
Further, when high efficiency is required, the high-efficiency energy reflecting plate 11 is preferable in which the height of the energy reflecting plate 3 is increased to the vicinity of the top of the Gotoku 2 and the reflecting surface is increased. In this case, it is necessary to attach a top notch 12 to the portion corresponding to Gotoku 2. Cleaning is a bit cumbersome because of the top notch 12 but can produce high energy efficiency because most of the radiant heat is available. Moreover, as a result of the clearance between the top end of the high-efficiency energy reflecting tray 11 and the container 1 being reduced, the convective heat is less diffused to the outside and the thermal efficiency is further improved.
Since the main purpose of the energy reflecting dish 3 is to reflect on the surface of the dish, the thickness is thin and sufficient. Therefore, it can be easily manufactured by press working, and the manufacturing cost can be reduced.

The invention's effect

Using a gas stove for home use, 7 deciliters of water was put in a pot and the experiment was raised to 100 degrees. As a result, it was possible to reduce the time significantly to 9 minutes when using the energy reflector, compared to 10 minutes and 30 seconds in the specifications that do nothing. Speaking of the gas usage fee, an energy saving effect of 15 to 20 percent can be produced.
In the present invention, it is most important to reflect radiant heat, and it is preferable to keep the reflecting surface clean at all times. However, the main body is lightweight and can be easily removed and cleaned from the gas stove, so that the object can be satisfied.

The side view which shows the use condition of this invention Energy reflection dish cross section High efficiency energy reflector pan cross section

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Gotoku 3 Energy reflecting dish 4 Gas top 5 Vaporizer 6 Fire tray 7 Flame 8 Lower air inlet 9 Upper air inlet 10 Bottom opening 11 High-efficiency energy reflecting dish 12 Upper notch 13 Juice storage bank

Claims (2)

  A dish-shaped or inverted frusto-conical reflecting dish made of a material highly reflective to radiant heat and having a smooth inner surface. The bottom opening is large enough to accommodate the gas vaporizer 5 in the center of the bottom of the dish. An energy reflecting tray having a portion 10 and having a lower air inlet 8 at the lowermost end and an upper air inlet 9 near the center around the plate.   A dish-shaped or inverted frusto-conical reflecting dish made of a material with a high reflectance to the radiant heat and having a plurality of upper notches 12 that intersect with five virtues 2 at the top, and the bottom of the dish An energy reflecting dish having a bottom opening 10 in which a gas burner carburetor 5 enters in the center, and a lower air inlet 8 at the lowermost end and an upper air inlet 9 near the center around the dish.

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