JPH03121026A - Plate capable of heating and temperature-holding and cooling - Google Patents

Abstract

PURPOSE:To heat, temperature-hold and to cool a food by providing a plate and a heater, a container stored therein absorbent and a container stored therein coolant, which are removably attached to the plate, and by disposing a valve between both containers. CONSTITUTION:When a valve 4 is opened, coolant 22 stored in a container is evaporated, and accordingly, thus evaporated coolant flows through pipes 3, 33 and is then absorbed by absorbent stored in a container 1. in this phase, since the evaporation of the coolant 22 is promoted, the evaporation of the coolant 22 is promoted adiabatically and abruptly. Accordingly, the temperature of the coolant 22 is abruptly lowered. These containers are attached to a body 8 with the container 22 stored therein with the coolant 22 being set above, and then a plate 6 is attached. Thus, a food to be cooled is set on the plate 6 and is covered at its upper part with a lid 9 so that the food can be cooled. Further, if the container 1 stored therein with the absorbent 11 is set above, it is possible to hold the temperature of a cooked food.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a plate capable of cooking food and keeping cooked food warm, insulated, and cooled.

BACKGROUND OF THE INVENTION Conventionally, hot plates have been used as cooking devices that can both cook food and keep it warm. Refrigerators or freezers are generally used for cold storage. However, to keep sashimi and frozen desserts cold for a short period of time, such as right before a meal, it has been common practice to keep them cold indirectly using dry ice or ice, or by putting them directly into the food. There were also disposable cooling bags. However, there was no simple device with integrated heating, heat retention, and cold retention functions that could be used depending on the purpose of use.

Problems to be Solved by the Invention In the conventional situation, cooking, heating, and keeping food hot and cold depended on completely different devices and methods, which made the work extremely complicated. In particular, when using ice to keep food cold for a short period of time just before a meal, it melts quickly and the cooling effect decreases, so it is necessary to add ice or the like frequently. Furthermore, when ice is added to a beverage to keep it cold, the concentration decreases, which impairs the original taste, which is not desirable. Therefore, a device with a relatively simple cold storage function has been strongly desired.

The purpose of the present invention is to provide a device that can heat, keep warm, and keep cold food, which solves the above-mentioned problems, improves the effects of heating, keeping warm, and keeping cold by attaching and detaching the plate, and also makes it easy to clean dirt by attaching and detaching the plate. It is something to do.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention includes a plate, a container equipped with a heater and containing an adsorbent, and a container containing a refrigerant liquid, the container having the above-mentioned It is made detachable from the plate and connected to the same container under reduced pressure via a valve.

Effect of the present invention In the above structure, when cooking is performed on a plate equipped with a heater and attached to a container containing an adsorbent with the valve open, the adsorbent in the container is simultaneously heated and the adsorbent is already absorbed. The refrigerant liquid that has been stored is desorbed as vapor and condensed in a container containing the refrigerant liquid (hereinafter referred to as reactivation). If you finish cooking in this state, the adsorbent will reach 180°C.
When the temperature reaches a certain level, the refrigerant is vaporized and adsorbed from the container containing the refrigerant liquid, generating heat of adsorption and maintaining heat retention. In addition, if you close the valve after reactivation is complete, simply open the valve at any time and the adsorbent will adsorb refrigerant vapor.
The evaporation of the refrigerant liquid is promoted by the adsorbent and the latent heat of vaporization is taken away from the refrigerant liquid itself, causing it to rapidly cool and freeze. Cold storage is possible on a plate attached to a container containing refrigerant liquid, and heat preservation is possible when a plate is attached to a container containing adsorbent. The plate provides uniform temperature distribution and eliminates temperature unevenness for the food when cooking or keeping it warm, and provides heat storage ability to cool the cold food from the entire plate surface when keeping it cold.

The plates can also be removed from the unit and cleaned if necessary.

As described above, cooking can be performed while the heater is energized, and reactivation can be performed at the same time. In addition, if you close the valve after reactivation, you can keep it warm or cold for a relatively long time by simply opening the valve, selecting a container, and attaching it to the main unit with the container at the top. Easy to use.

Therefore, the complexity of conventional operations is eliminated. In particular, when it comes to keeping drinks cold, they last longer than ice, so they do not melt, and their density does not decrease even when drinks are kept cold.

EXAMPLE An example of the present invention will be described below with reference to the accompanying drawings. In the figure, 1 is a container equipped with a heater 5 and containing an adsorbent 11, 2 is a container containing a refrigerant liquid 22, 3 and 33 are pipes connecting the containers 1.2 under reduced pressure, and 4 is a pipe 3. .33 is the valve, 6 is the heating cooking plate,
7 is a power cord, 8 is a body to which the container 1.2, plate 6, etc. are attached, and 9 is a lid that detachably covers the plate 6.

Although not shown, the container 1.2 is capable of changing its vertical position within the body 8, and can be attached to and detached from the plate 6.

Next, the operation of this embodiment will be explained. It is assumed that reactivation has been completed in advance and the valve 4 is closed. valve 4
When opened, the refrigerant liquid 22 contained in the container 2 evaporates,
The vapor passes through the pipes 3 and 33 and is adsorbed by the adsorbent 11 housed in the container 1. At this time, the refrigerant liquid 22
Since the evaporation of the refrigerant liquid 22 is promoted, the evaporation of the refrigerant liquid 22 is adiabatically and rapidly promoted. Therefore, the temperature of the refrigerant liquid 22 drops rapidly. Food can be kept cold by attaching the container 2 containing the refrigerant liquid 22 to the body 8 with the container 2 facing upward, then attaching the plate 6, placing a cold object on the plate 6, and covering the top with the lid 9. . Also, the adsorbent 11
If the container 1 containing the food is placed upward, the food to be cooked can be kept warm.

When the adsorption power of the adsorbent 11 is exhausted by the above-described operation, reactivation is performed as follows.

The valve 4 is opened, the container 2 containing the refrigerant liquid 22 is turned down, and the heater 5 is energized by the power cord 7 to heat the adsorbent 11. In this way, the refrigerant liquid 22 adsorbed by the adsorbent 11 is desorbed as vapor and condensed in the container 2. The reactivation is thus completed, and the valve 4 is closed to prepare for the next operation. If this reactivation operation is performed by attaching the plate 6 to the container 1, heating and cooking can be performed at the same time. Further, by opening the valve 4 after cooking, the heated food can be kept warm.

Next, a comparison result between the performance of the apparatus of this embodiment and the performance of the conventional method will be explained below. The apparatus of this embodiment includes 1000 g of zeolite 13X as the adsorbent 11 and 22 g of refrigerant liquid.
The water was 300 g, and the capacity of the heater 5 was 1.2 kW. The conventional method is to use a hot plate with heat retention function (NF-H12 made by our company, heater capacity 1.3kW, heat retention 0.1
3kW) and ice.

The comparison item is 230℃ as a representative of heating cooking.
18 which represents the temperature rise time to reach the temperature and the heat retention performance.
We selected the range of heat retention temperatures at 0°C and the temperatures reached after 10 minutes, 20 minutes, and 30 minutes, which represent the performance during cold storage. In addition, as a conventional method for the cold storage performance test, 3 pieces of ice (45 g) were used in 180 cc of juice.

From the results shown in the table below, the device of this example, in which a plate is attached to a container containing water as a refrigerant liquid, has a smaller cooking temperature range and heat retention temperature range than the conventional method, and can handle 180 cc of juice as described above. Even compared to the conventional method of placing the juice in a container and keeping it cold with three pieces of ice (45 g), the juice kept in the container according to this embodiment on a plate has better heat retention.

Examples of performance comparisons have been shown, but zeolite A3, A4, A5, silica gel, aluminum silicate, etc. are effective as adsorbents that provide results equivalent to those described above. Although water is used as the refrigerant in the above example, it is also possible to use organic solvents such as aqueous ammonia, chlorofluorocarbons, alcohols, amines, aromatics, etc. alone or in a mixed multi-component system to provide the same effect. Further, the configuration diagram of the plate capable of heating, keeping warm, and keeping cold shown in this embodiment is one example, and the present invention is not limited to this.

Effects of the Invention As described above, in the present invention, at least one plate can be attached to and detached from a container equipped with a heater and containing an adsorbent, and a container containing a refrigerant liquid, and a valve is provided between the two containers so that the plate can be connected to the container under reduced pressure. By connecting plates that can heat, keep warm, and keep cold, the functions of cooking food, keeping warm, and keeping cold are combined into one compact device, so it can be easily used according to the purpose of use. It is possible to eliminate the complexity of work required by conventional methods. What's more, it has excellent stability in heating and maintaining temperature, and unlike conventional methods, it does not require the use of ice, so there is no reduction in food concentration or damage to taste, and this effect is extremely significant. It is something.

[Brief explanation of drawings]

The figure is a sectional view showing the configuration of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Container containing adsorbent, 2... Container containing refrigerant liquid, 4... Valve, 5... Heater, 6...
plate.

Claims (1)

[Claims] It comprises a plate, a container equipped with a heater and containing an adsorbent, and a container containing a refrigerant liquid, both of which are removable from the plate, and which are connected to each other under reduced pressure via a valve between the two containers. A plate that can be heated, kept warm, and kept cold.