JPH052690U - Decompressor - Google Patents

Abstract

(57) [Summary] [Structure] A structure in which a leg portion 2 is fixed to a carbon molding plate 1 made of graphite, and a groove 3 and / or a hole for draining water are provided on an upper surface of the carbon molding plate, It has a structure in which the bottom surface of the carbon molded plate is processed into an uneven shape, or a structure in which a planar heating element is spread on the back surface of the carbon molded plate. The carbon molded plate is preferably composed of a graphite material having an apparent density of 1.6 g / cc or more and a crystallite (Lc 002) of 200 angstrom or more. [Effect] The object to be thawed can be rapidly thawed naturally in a state where the degree of decrease in the thawing rate with time is alleviated. In particular, frozen foods such as edible meat and seafood can be thawed with a small amount of drip in a short time without causing freshness, flavor, shape loss, etc., which is useful for commercial and household purposes.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a thawing device for rapidly and naturally thawing frozen preserves such as foods.

[0002]

[Prior art]

  Recently, it is industrially common to store frozen foods such as meat and seafood. Instead, it has spread to general households and is widely used. When cooking these frozen foods Although thawing processing is required, the following methods have been conventionally adopted as the means for thawing. Has been.     (1) Natural thawing method in which it is left unattended or thawed at low temperature in the refrigerator     (2) Water thawing method of immersing in water or spraying water to thawing     (3) Heating and thawing method using microwave, far infrared heater, etc.     (4) Heat exchange thawing method of thawing by exposing to hot air or warm water

[0003]   Of these, the natural thawing method (1) requires a long time to completely thaw, Not only does the drip come out a lot to reduce the freshness, but it also loses its shape and the finish of the dish is bad. Become In the water thawing method of (2), the treated food becomes watery and may come into contact with water. It is not applicable to foods that cannot be processed. Heating solution using microwave in (3) The freezing method is a method that uses a microwave oven, and it is possible to heat the inside and outside at the same time. Therefore, it is effective for rapid thawing, but uneven thawing may occur depending on the amount and quality of food, It may cause problems such as normal thawing due to overheating, and equipment costs are high. Yes. When using a far-infrared heater, the surface layer temperature rises locally. Therefore, a large amount of drip and uneven thawing are likely to occur. The heat exchange thawing method in (4) is frozen It takes time to apply heat to the inside of the product, and energy consumption also increases.

[0004]   Thaw frozen products, especially raw frozen foods such as meat and fish, without compromising freshness or flavor. In order to achieve this, it is necessary to perform processing within a short time under conditions where there is no temperature variation near room temperature. It becomes a matter. To do this, the amount of heat from room temperature to freezing can be quickly transferred, and most With high thermal conductivity and low specific heat characteristics so that the thermal energy of slag functions for thawing action It can be expected to be realized by bringing the food into contact with the object to be thawed.

[0005]   From this point of view, when the apparent density is 1.6 g / cc or more and the crystallite (Lc 002) is 200 ng. Defroster with a structure in which legs are installed on a carbon molded plate made of graphite or more than strom Has been developed by the present applicants (utility model registration application completed on June 20, 1991)  ).

[0006]

[Problems to be solved by the device]

  Since the base of the above defroster is made of graphite with high thermal conductivity, It has the function of quickly and naturally thawing frozen foods in a state of With no problems and excellent corrosion resistance and durability, it is suitable for commercial and household use. Useful. However, in order to further improve the thawing performance, the cover should be -Reduces the decrease in the thawing speed that occurs over time due to overcooling of the carbon molded plate. Such structural improvement was necessary.

[0007]   The object of the present invention is to improve the structure of the prior application in order to solve the above problems, and Freezing of frozen foods is always quick and stable by alleviating the slow down of the thawing speed. The object of the present invention is to provide a decompressor having a structure capable of performing.

[0008]

[Means for Solving the Problems]

  To achieve the above object, the defroster according to the present invention is made of graphite carbon. A common precondition is that the legs are fixed to the molding plate, and the first structure The structure is a structure in which grooves and / or holes for draining water are provided on the upper surface of the carbon molded plate, The second structure is a structure in which the bottom surface of the carbon molded plate is processed into an uneven shape, and the third structure Features a structure in which a sheet heating element is spread on the back surface of a carbon molded body.

[0009]   The carbon molded plate of the present invention is placed on the upper surface of the object to be directly defrosted and allowed to thaw naturally. The crystallite (L) obtained from the X-ray diffraction pattern has an apparent density of 1.6 g / cc or more. c 002) is preferably made of graphite material with a size of 200 angstroms or more. Yes. Substrate material of less than 1.6 g / cc apparent density or less than 200 angstroms If the graphite crystal of crystallite (Lc 002) has an undeveloped carbonaceous structure, heat transfer The performance is insufficient and the defrosting speed decreases.

[0010]   The graphite carbon molded plate having the above characteristics is a petroleum coke or graphene that is easily graphitized. Kneads pitch coke powder granules with a binder to form a plate. After that, it is fired and carbonized at a temperature of up to 1000 ° C in a non-oxidizing atmosphere, and then 2000 in a graphitizing furnace. It can be manufactured by graphitizing at a temperature of ℃ or higher and then surface-treating. Wear.

[0011]

[Action]

  In the present invention, the graphitic carbon molding plate that is the thawing base remains as it is. When it comes into contact with frozen foods, the amount of heat that it possesses can be accelerated through the excellent heat conduction function of the material. It is transmitted to the frozen crab, and its action causes rapid spontaneous thawing. The decompression process is always Since it is performed at room temperature or below within a short time, even when targeting meat and seafood, It does not cause a lot of pop, and does not deteriorate the freshness and flavor. Besides, carbon Since the shape plate is relatively lightweight, it is convenient to handle, and there is no toxicity in terms of material and corrosion There is no danger of this happening, so there is no problem in hygiene. Also, the carbon molded plate is installed with legs As a result, the circulating air comes into contact with the lower surface, so the energy taken from the upper surface that comes into contact with the frozen product is lost. It is possible to replenish the lugie from the bottom surface and prevent the thawing performance from deteriorating.

[0012]   In addition to the function of the above-mentioned premise structure, in the first configuration, the water is not Grooves for cutting, holes or these are installed at the same time, so it can be thawed from the object to be thawed. The generated water is smoothly removed from the plate. This action reduces the thawing rate over time. Alleviated and high thawing performance is maintained.

[0013]   In the second configuration, the bottom surface of the carbon molding plate is designed to have an uneven shape. Therefore, the surface area that absorbs the outside air temperature becomes large, and the energy from the bottom surface of the carbon molding plate increases. Increased energy supply. This action prevents the thawing speed from declining over time, A high degree of thawing performance is maintained.

[0014]   The third structure is a structure in which a planar heating element is spread on the back surface of a carbon molded plate, and Deterioration of the thawing ability is given to the carbon molded plate with good thermal conductivity via the sheet heating element. It is effectively prevented by the heat energy generated, which reduces the thawing rate over time. Retirement is prevented.

[0015]

【Example】

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

[0016] Example 1   FIG. 1 is a perspective view illustrating a first constitutional aspect of a defroster according to the present invention. A carbon molded plate made of is a leg part. The dimensions of the carbon molded plate 1 are those to be defrosted. Depending on the throughput and size of the The thickness should be set to at least 10 mm or more in order to retain energy. And are preferred. In addition, the surface of the carbon molded plate 1 will come off due to long-term use. To prevent the phenomenon that the defrosted object is contaminated with carbon powder, a thin resin coating is applied. It is advisable to put it in place. The leg part 2 maintains a stable form on the lower surface of the carbon molding plate 1. It is usually made of rubber, plastics, etc. Be done.

[0017]   Reference numeral 3 is a draining groove provided on the upper surface of the carbon molded plate 1. Groove 3 to be formed The pattern, number of installations, etc. are not particularly limited. The contact area with the shape plate 1 is not reduced so much and the water is smoothly removed. It is preferable to set. To do this, go from the center to the end as shown. It is preferable to install it as a radial inclined groove with a groove width of about 2 mm that deepens Become. Also, instead of the groove, or with the groove, a hole (not shown) for draining water is installed. It can also have a structure. When installing holes, the upper surface of carbon molding plate 1 It is a preferable design that the holes are formed in such a manner that they are vertically penetrated at even intervals.

[0018]   At the time of use, it suffices to put the object to be thawed on the upper surface of the carbon molding plate 1, No special operation such as replenishing heating energy from the section is required. Figure 5 is based on this example A decompressor (Fig. 1 structure) using a carbon molding plate 1 of 300 mm in length and width and 30 mm in thickness is used for 400 g. Weight loss over time when placed on ice and thawed with a flat carbon molded plate of the same size It is shown in comparison with the case of the configured decompressor (comparative example). In case of comparative example Thawing hardly progresses in about 10 minutes, but with the thawing device of the first embodiment, It is found that the decrease in freezing rate is effectively alleviated and thawing proceeds continuously.

[0019] Example 2   FIG. 2 is a perspective view illustrating a second configuration mode of the defroster according to the present invention, and 1 is a graphite material. Carbon molded plate consisting of 2, 2 legs, and the bottom surface of carbon molded plate 1 of 3 It is the formed concavo-convex processed portion. There is no limitation on the shape of the uneven processed portion 4 formed, A form in which the surface area for absorbing outside air heat is increased on the bottom surface of the carbon molded plate 1. If so, it is possible to use a fairly fine uneven pattern.

[0020]   Also in the structure of this example, the carbon molded plate 1 is covered on the upper surface thereof with, for example, a frozen fish 5. Thawing will proceed naturally just by placing the thawed product. As a concrete structure, vertical and horizontal 300 mm, Seven communicating grooves with a width of 20 mm and a depth of 20 mm are provided in parallel at the bottom of the carbon molded plate 1 having a thickness of 30 mm. The prepared thaw device was prepared, and the result of the thaw test of ice was conducted in the same manner as in Example 1. It is also shown in FIG. Even with this structure, the decrease in the thawing speed with time is lower than in the comparative example. It is recognized that it is alleviated.

[0021] Example 3   FIG. 3 is a perspective view illustrating a third constitutional aspect of the defroster according to the present invention. Carbon molded plate consisting of 2, 2 legs, 6 frozen meat to be thawed, and 7 Is a lead wire for energization. In this structure, the surface heat generated on the back surface of the carbon molding plate 1 Body 8 is unfolded.

[0022]   As the sheet heating element 8, as shown in FIG. 4, for example, conductive carbon black or black is used. Carbon powder such as lead powder, expanded graphite, carbon fiber chop, alone or in combination, Wet-processed carbon with this together with resistance modifiers such as alumina fiber and wood pulp A structure in which an electrode portion 10 is provided at an end portion of a quality sheet 9 and is covered with a heat resistant resin layer 11 Is preferably used. The sheet heating element with this structure is thin and lightweight, and has a small heat capacity. It has the characteristic that the temperature rises quickly, and the energy supplied by the power supply is converted to carbon. It has the ability to transmit to the shape plate efficiently and promptly. Therefore, thermostat etc. It can be installed together with the temperature control mechanism of, and can be adjusted in a constant temperature range of preferably 20 ° C or less. Designed so that the thaw rate will not affect the objects to be thawed without adversely affecting the temperature. It becomes possible to improve.

[0023]   As an example, apparent density 1.72 g / cc, crystallite (Lc 002) about 1100 angstrom 300 mm in length and width formed by processing a graphite material (G152A manufactured by Tokai Carbon Co., Ltd.) On the back surface of the carbon molded plate 1 having a length of 10 mm, the sheet heating element 8 having the structure shown in FIG. m, 100W, 20 ° C control thermostat built-in), and rubber feet 2 on the underside. It was fixedly installed in a corner to prepare a defroster. On the upper surface of the defroster, a thickness of about 15 mm and a weight of 200 g Place frozen beef and frozen tuna weighing about 20 mm and weighing 250 g, and adjust the state of natural thawing. I checked. For comparison, the same test was performed using a defroster without spreading the sheet heating element 8. It was The results are shown in Table 1.

[0024]

[Table 1]

[0025]

[Effect of device]   As described above, according to the defroster of the present invention, the defrosting rate of the object to be thawed decreases with time. It can always be naturally thawed rapidly in a relaxed state. Especially edible meat, Frozen foods such as seafood can be used with a small amount of drip to bring about phenomena such as freshness, flavor, and deformation. As it can be thawed quickly in a short time without bruising, it can be used for business or home use. As a result, an extremely high practical effect is brought about.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a decompressor according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a decompressor according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a decompressor according to the present invention.

4 is a cross-sectional view illustrating a planar heating element spread on the defroster of FIG.

FIG. 5 is a graph showing changes over time in thawing of Examples 1 and 2 and a comparative example.

[Explanation of symbols]

1 Carbon molded plate 2 legs 3 grooves 4 Concavo-convex part 5 frozen fish 6 frozen meat 7 lead wire 8 Sheet heating element 9 carbonaceous sheet 10 Electrode part 11 Heat resistant resin layer

Claims (4)

[Scope of utility model registration request] 1. A defroster having a structure in which legs are fixed to a carbon molded plate made of graphite, and a groove and / or hole for draining water is provided on the upper surface of the carbon molded plate. 2. A defroster having a structure in which legs are fixed to a carbon molding plate made of graphite, and the bottom surface of the carbon molding plate is processed into an uneven shape. 3. A defroster having a structure in which legs are fixed to a carbon molded body made of graphite, and a planar heating element is spread on the back surface of the carbon molded plate. 4. The carbon molded plate has an apparent density of 1.6 g / cc.
The defroster according to claim 1, 2 or 3, which is made of a graphite material having a crystallite (Lc 002) of 200 Å or more.