JP2006218088A - Dish for service cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dish for a service cart capable of eliminating heating insufficiency and heating nonuniformity by surely transmitting heat from a heater firstly, being held with a hand immediately after heating secondly, enhancing heat insulation performance as well thirdly, and being excellent in terms of strength, corrosion prevention and slip prevention fourthly. <P>SOLUTION: The dish 15 is used in the service cart used for providing food and drinks A. The food and drinks A requiring heating can be stored in the dish and the dish is heated by a heater from the lower side. The dish 15 is composed of a light metal such as an aluminum material. The outer side of a side face and a bottom surface of the dish are coated with a resin with a low heat conductivity, such as a silicone material 17. The dish is used as a rice bowl for instance. The thickness of the side face of the silicone material 17 is about 0.5-1.0 mm and the thickness of the bottom surface is about 0.2-0.5 mm. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to tableware for service carts. In other words, the present invention relates to a tableware for a service cart that is used in a service cart provided for a food and drink provision service, in which a food or drink that requires heating is placed and heated from below by a heater.

《About conventional technology》
FIG. 4 shows a tableware for a service cart of this type of conventional example, (1) FIG. 4 is a front sectional view of one example, and (2) FIG. 4 is a front sectional view of another example.
Service carts are used, for example, in aircraft cabins, employee cafeterias, hospitals, medical facilities, welfare facilities, etc., and are equipped with food and drink A, equipped with doors and wheels, and moved by pushing by hand. Provided for the provision service of the object A.
In recent years, not only simply transporting food and drink A, but also a type of heating the food and drink A by mounting a heater is increasing. In this type of service cart, heaters are incorporated in trays and shelves that are stored and held in multiple stages, so that food and drink A in the dishes 1 and 2 placed on the heaters can be heated. It has become.
By the way, in such a type of service cart, conventionally, the resin tableware 1 shown in FIG. 4 (1) and the metal tableware 2 such as aluminum shown in FIG. 4 (2) are provided. Used.

《Information on prior art documents》
Examples of such conventional tableware 1 and 2 for service carts include those disclosed in Patent Document 1 below.
JP 2002-119338 A

By the way, the following problems have been pointed out for this conventional example.
<About the first problem>
1stly, the problem that the heat conductivity was low was pointed out about the tableware 1 for resin-made service carts.
In other words, this type of tableware 1 made of resin does not sufficiently transfer the heat from the heater to the bottom surface of the tableware 1 and also from the bottom surface to the side surface. As a result, the food and drink A in the tableware 1 is insufficiently heated. In addition, there is a problem that uneven heating tends to occur.
And about the food / beverage A in the tableware 1, the burning in the bottom vicinity and the heating nonuniformity between upper and lower sides occurred frequently. In particular, when the tableware 1 is used as a rice bowl and the rice is heated as the food and drink A, such a problem has been noticeably pointed out.

About the second problem
Secondly, it has been pointed out that the tableware 2 for metal service carts such as aluminum cannot be held by hand after heating.
That is, this kind of metal tableware 2 has high thermal conductivity, and the above-mentioned problems pointed out with respect to the resin tableware 1 are eliminated.
However, the tableware 2 of the food and drink A heated by the heater is heated to a high temperature to the outside of the side surface, and is hot immediately and cannot be held with bare hands, and there is even a risk of burning the fingers if it is forcibly held. Also, if you wait until you can hold or cool, the meaning of heating will be lost. Thus, there was a problem that it became an obstacle to smooth eating.

<< About the third problem >>
Thirdly, the metal tableware 2 has been pointed out as having a problem of insufficient heat retention.
That is, this type of metal tableware 2 has a high thermal conductivity, so that the heat-retaining power after heating is insufficient, and the heated food and drink A cools in a short time as time passes after heating. It was. Therefore, it was pointed out that the eating time tends to be shorter because it is eaten before it gets cold.

<< About the present invention >>
The tableware for service carts of the present invention is made in order to solve the problems of the above-described conventional example in view of such a situation. And it consists of light metals, such as an aluminum material, and the outer side is coat | covered with resin, such as a silicon material, It is characterized by the above-mentioned.
Therefore, the present invention firstly solves the problem of insufficient heating and uneven heating, and secondly, it can be held by hand immediately after heating, and thirdly, the heat retention is improved, and fourthly, the strength surface. The purpose is to propose a tableware for service carts that has excellent anti-corrosion and anti-slip surfaces.

<About Claim>
The technical means of the present invention for solving such a problem is as follows. First, claim 1 is as follows.
This tableware for a service cart is used in a service cart provided for a food and drink provision service, and the food or drink that requires heating is placed and heated from below by a heater. It is made of an aluminum material or other light metal, and the outside is coated with a silicon material or other resin having low thermal conductivity.
About Claim 2, it is as follows. The tableware for a service cart according to claim 2, wherein the silicon material is coated on the outside of the side surface and the bottom surface, and the silicon material has a side wall thickness of 0.5 mm or more and 1.0 mm. The bottom surface has a thickness of 0.2 mm or more and 0.5 mm or less.
About Claim 3, it is as follows. The tableware for a service cart according to claim 3 is used as a rice cooker according to claim 2.

<About action>
Since the tableware for service carts of the present invention is as described above, it is as follows.
(1) In the service cart, tableware containing food and drink that requires heating (including heat insulation) is stored and placed on the heater.
(2) Then, the heater is energized to generate heat, and the tableware containing the food and drink is heated. (3) Then, the tableware containing the heated food and drink is taken out of the service cart and provided for a food and drink provision service.
(4) And this tableware is made of light metal, and the outside is covered with resin. For example, it is made of an aluminum material and is covered with a silicon material, and the coating thickness is 0.5 mm to 1.0 mm in the side surface and 0.2 mm to 0.5 mm in the bottom surface.

(5) Therefore, when this tableware is used, it becomes as follows. First, since the tableware is made of aluminum or the like and has high thermal conductivity, the heat from the heater is reliably conducted to the bottom surface and the side surface. The silicon material or the like on the bottom surface is set to a thickness that does not hinder this heat conduction.
Therefore, the food and drink in the tableware is heated sufficiently and uniformly, and the merit is particularly great when the tableware is used as a rice bowl.
Secondly, since the outer side of this tableware is coated with a silicon material having a low thermal conductivity, the outer side heat is made of an aluminum material having a high thermal conductivity and is heated by a heater. Conduction, heating, and temperature rise are suppressed.
Therefore, the tableware immediately after heating can be held by hand, so that the food and drink can be eaten hot. In particular, the silicon material or the like on the side surface, which is a point held by hand, is set to a thickness that supports this heat conduction suppression.
Thirdly, since this tableware is covered with a silicon material having a low thermal conductivity, it is excellent in heat retention after heating despite being made of an aluminum material having a high thermal conductivity, Things are hard to cool.
Fourthly, the tableware made of aluminum or the like is coated on the outside with a silicon material or the like, so it has excellent impact load absorbability, improved drop strength, and does not deform even when hit. There are few. Moreover, corrosion is prevented and it does not slip carelessly.

<Features of the present invention>
Thus, the tableware for service carts according to the present invention is made of a light metal such as an aluminum material, and is characterized in that the outside is covered with a resin such as a silicon material.
Therefore, the present invention exhibits the following effects.

<< First effect >>
First, insufficient heating and uneven heating of food and drink are eliminated. That is, since the tableware of the present invention is made of an aluminum material having a high thermal conductivity, the food and drink in the tableware is sufficiently heated and uniformly heated by the heater.
Therefore, the occurrence of scorching and heating unevenness, which has been pointed out in the above-described conventional resin tableware, is prevented, and the texture can be satisfied. And when this tableware is used as a rice cooker which heats rice as food and drink, it is particularly effective, and delicious rice can be obtained.

<< Second effect >>
Second, it can be held by hand even immediately after heating. That is, since the outer side of the tableware of the present invention is covered with a silicon material having a low thermal conductivity or the like, even if the content is hot immediately after heating, it can be held immediately with bare hands.
Like the metal tableware of this kind of conventional example, it is safe without risk of burning the finger, and it is not necessary to wait until it is held or cooled. By these, smooth eating is realized.

《Third effect》
Third, the heat retention is improved. That is, the outer side of the tableware of the present invention is covered with a silicon material having a low thermal conductivity. Therefore, compared to the metal tableware of this type of conventional example, the heated food and drink are kept warm and are not easily cooled. This will allow you to enjoy your eating time for a long time.

<< 4th effect >>
Fourthly, it is also superior in terms of strength, corrosion prevention, anti-slip surfaces and the like. That is, since the tableware of the present invention is covered with a silicon material or the like, the drop strength is improved, it is difficult to deform, and there is little contact sound. Moreover, corrosion is prevented and it does not slip carelessly.
As described above, the effects exerted by the present invention are remarkably large, such as all the problems existing in this type of conventional example are solved.

《About drawing》
Hereinafter, the tableware for service carts of the present invention will be described in detail based on the best mode for carrying out the invention shown in the drawings.
FIG. 1 is used to explain the best mode for carrying out the present invention. (1) is a front sectional view, and (2) is a graph of an evaluation test.
FIG. 2 is a perspective view of a service cart. (1) FIG. 2 shows the whole, and (2) FIG. 2 shows a tray and tableware. FIG. 3 shows another example of the service cart and is a front sectional view of the main part.

<About Service Cart 3>
First, the service cart 3 will be described with reference to FIGS. The service cart 3 has a box shape and contains food and drink A, and includes a door 4 and wheels 5. The service cart 3 is pushed and moved and conveyed by hand to be provided for food and drink A providing service.
Such a service cart 3 will be further described in detail. The service cart 3 is used, for example, to provide food and drink A to passengers, patients, elderly people, young people, etc., in aircraft cabins, employee cafeterias, hospitals, medical facilities, welfare facilities, etc. The This service is provided through a crew member, a caregiver, a nurse, a waiter, another person, or by the self-service of the person himself / herself.
The service cart 3 is composed of a housing having a top plate 6, side plates 7, a back plate 8, a floor plate 9, a door 4 and the like, and wheels 5 such as casters are attached below the four corners of the floor plate 9. The top plate 6, the side plate 7, the back plate 8, the floor plate 9, the door 4 and the like are each made of a heat insulating panel in which a heat insulating material is interposed as a core material between the surface plates made of aluminum or other light metal. However, it is assembled to aluminum and other light metal corner molds arranged in the vertical and horizontal directions, that is, up and down, left and right, and front and rear.
The service cart 3 not only simply stores and transports the food and drink A, but also includes a heater 10 to heat the stored food and drink A (including heat retention, the same applies hereinafter).
The heating temperature of the heater 10 is about 130 ° C to 150 ° C. As a heating pattern by the heater 10, there are various patterns such as a simple cooking pattern, a heating and heating pattern, a heating and heating pattern, a heating and cooking pattern that has been cooked in advance, and so on. Possible patterns.
Reference numeral 11 denotes a control unit that controls the heater 10 and the like. In addition, there are many service carts 3 equipped with a cooling and cold insulation device together with the heater 10 which is a heating device.

And the guide rail 12 is fixed inside the both-sides board 7 of the service cart 3 with the right-and-left height level aligned and facing each other in multiple upper and lower stages with vertical intervals.
In the example of FIG. 2, the tray 13 in which the planar heater 10 is partially incorporated is provided between the left and right guide rails 12. In the example of FIG. 3, the planar heater 10 is entirely disposed between the left and right guide rails 12. The built-in shelf board 14 is hold | maintained at upper and lower multistage | stages so that insertion / removal is possible respectively. In the example of FIG. 3, the tray 13 ′ is placed on the shelf board 14. Of course, the heater 10 is not incorporated in the tray 13 ′.
Accordingly, the dishes 15 and 16 in which the food and drink A are put are placed on such trays 13 and 13 '. As food and drink A, rice, rice cake, boiled food, miso soup, tea, coffee, soup, and other various dishes are considered as those requiring heating, and raw vegetables, salads, sashimi, fruits, Desserts and others can be considered.
The service cart 3 is like this.

<< About tableware 15 >>
Hereinafter, the tableware 15 of the present invention will be described with reference to FIG. The tableware 15 is used in the service cart 3 provided for the food / drink A providing service, and the food / beverage A requiring heating is put on the heater 10 and directly on the heater 10 in the example of FIG. 2 and in the example of FIG. 13 'and is heated by the heater 10 from below (see also FIGS. 2 and 3).
The outer side of the side surface B and the bottom surface C is covered with an aluminum material or other light metal and the silicon material 17 or other resin having low thermal conductivity.
In addition, although the food / beverage A which does not require heating is put into the tableware 16 (refer FIG. 2), this tableware 16 is based on the structure according to the tableware 1 and 2 (refer FIG. 4) of this kind conventional example mentioned above. It cannot be placed on the heater 10.

Such tableware 15 of the present invention will be described in further detail. In the manufacture, the tableware 15 main body is first manufactured. That is, a molten aluminum material, that is, an aluminum alloy material, or other molten light metal is poured into the mold to cast the tableware 15 body, but the tableware 15 body can be manufactured by a press method or the like.
Then, the tableware 15 body manufactured in this way is placed coaxially in a slightly larger mold, and the molten silicon material 17, that is, silicone rubber, or other molten resin having low thermal conductivity is used as the tableware 15. By pouring between the molds, the tableware 15 whose outer side is coated with the silicon material 17 or other resin is manufactured. Note that the coating is possible not only by casting but also by winding or other coating methods.
The tableware 15 is manufactured in this way.

<< About the thickness of the tableware 15 >>
The thickness of the tableware 15 is as follows. The thickness of the tableware 15 body manufactured in this way, for example, the thickness of the aluminum tableware 15 body is uniform throughout the side B and the bottom C, and is about 1.0 mm to 2.0 mm. There is typically about 1.5 mm. When light metals other than aluminum materials are used, it is almost the same.
In addition, when the thickness is less than 1.0 mm, shape maintenance as a vessel is not easy and casting or the like becomes difficult. On the other hand, if the thickness exceeds 2.0 mm, the weight is excessive and the material cost is high, which is not appropriate.

The tableware 15 is coated with a thin coating of silicon material 17 on the outside of the side surface B and the bottom surface C.
The thickness of the side surface B of the silicon material 17 is about 0.5 mm to 1.0 mm, whereas the thickness of the bottom surface C is about 0.2 mm to 0.5 mm. Typically, a material having a thickness of about 0.7 mm on the side surface B and a thickness of 0.3 mm on the bottom surface C is used. Even when a resin other than the silicon material 17 is used, these are almost the same.
In addition, when the thickness of the side surface B is less than 0.5 mm, the coating becomes too thin and the heat retaining power is lowered, and there is a possibility that the tableware 15 is hot and cannot be held by hand. On the other hand, when the thickness of the side surface B exceeds 1.0 mm, the weight is excessive and the material cost is high, which is not appropriate.
In addition, when the thickness of the bottom surface C is less than 0.2 mm, it is difficult to cover with a uniform thickness, and there is a problem in durability. On the other hand, when the thickness of the bottom surface C exceeds 0.5 mm, the heater 10 has a problem in heating from below.
The tableware 15 has such a thickness.

<Others>
First, as shown in the figure, the silicon material 17 or other resin coating is typically applied to the outside of the side surface B and the outside of the bottom surface C, but it is applied only to the outside of the side surface B. It is also possible not to apply to the outside of the bottom surface C.
Secondly, the coating applied to the outside of the side surface B of the tableware 15 is applied to cover the upper edge of the tableware 15 in the illustrated example. That is, when the food and drink A in the hot heated tableware 15 is eaten, the upper edge of the tableware 15 main body with which the mouth contacts is also covered with the silicon material 17.
Thirdly, the tableware 15 in the illustrated example has a circular cross-sectional shape with a diameter of 116 mm and a height of about 46 mm, but various other shapes are conceivable, for example, a flat cross-sectional rectangular shape is also possible (see FIG. 2). reference).
Fourthly, the tableware 15 is used as, for example, a rice bowl, and rice is put in as the food and drink A. In this case, the rice cooked in advance as the food and drink A is simply heated outside the pattern. A pattern in which the food is heated and cooked as food A is also conceivable.
Fifth, the lid 18 of the tableware 15 is not usually covered with the silicon material 17 or the like. The lid 18 is generally made of resin, and is commonly used with those conventionally used.
Sixth, in FIG. 1 (1), D is a hand, and when holding the tableware 15 by hand, the side B of the tableware 15 is mainly held by the hand D. Is held as a support sub as needed.
The tableware 15 is like this.

《Action etc.》
The tableware 15 for the service cart 3 of the present invention is configured as described above. Therefore, it becomes as follows.
(1) First, in the service cart 3, the tableware 15 in which the food and drink A requiring heating (including heat insulation) is stored is stored on the heater 10 incorporated in the tray 13 or the shelf board 14, Tableware 15 is placed. The service cart 3 is then moved and stored (see FIGS. 2 and 3).

  (2) Prior to the food / drink A providing service, the service cart 3 is heated when the heater 10 is energized, and the tableware 15 containing the food / beverage A requiring heating is (Refer to FIG. 2 and FIG. 3).

  (3) Then, the tableware 15 in which the heated food and drink A is put is taken out of the service cart 3 and provided for the service for providing the food and drink A. That is, the tableware 15 is arranged and the food and drink A is served (see FIG. 2).

(4) And the tableware 15 used in this way is made of light metal, and is coated on the outside with a resin having low thermal conductivity (see FIG. 1 (1)).
The tableware 15 is used as, for example, a rice bowl, made of an aluminum material, and the outside of the side surface B and the outside of the bottom surface C are covered with, for example, a silicon material 17. The coating thickness of the silicon material 17 is, for example, that the side surface B is 0.5 mm to 1.0 mm and the bottom surface C is 0.2 mm to 0.5 mm.

(5) Now, when the tableware 15 for the service cart 3 of the present invention is used, the following first, second, third and fourth are obtained.
First, the tableware 15 is made of a light metal such as an aluminum material and has a high thermal conductivity. Therefore, the heat from the heater 10 is reliably conducted to the bottom surface C and from the bottom surface C to the side surface B. Heat conduction. → Note that the silicon material 17 or the like for covering the bottom surface C is set to a thickness that does not hinder such heat conduction.
Therefore, the food and drink A that needs to be heated in the tableware 15 is sufficiently heated without shortage and is surely heated uniformly. → In particular, when the tableware 15 is used as a rice bowl and the rice is heated as the food and drink A, there is a great merit that the lack of heating is thus eliminated and uneven heating is prevented.

Secondly, in the tableware 15, the outside of the side surface B and the bottom surface C is covered with a resin such as a silicon material 17. → And, since the outside is coated with the resin having low thermal conductivity in this way, this tableware 15 is made of light metal such as aluminum material having high thermal conductivity, and is heated by the heater 10 from below. However, the heat conduction to the outside of the side surface B and the bottom surface C of the tableware 15 is suppressed.
→ That is, since the outer silicon material 17 and the like have low thermal conductivity, the heating and temperature rise of the side surface B and the bottom surface C can be suppressed. Even if heating and high temperature are maintained, heating and temperature rise of the outer silicon material 17 and the like are suppressed.
Therefore, immediately after heating, it becomes possible to immediately hold the tableware 15 with the hand D, and it becomes possible to eat the heated food A while it is hot. In particular, the silicon material 17 for covering the side surface B, which is a point when the hand D is held, is set to a thickness that ensures suppression of heat conduction to the outside. On the other hand, the bottom surface C can be set with a thinner thickness because it is supported to the extent necessary.

Thirdly, in the tableware 15, the outside of the side surface B and the bottom surface C is covered with a resin such as a silicon material 17. → Since the outer side is coated with a resin having a low thermal conductivity in this way, this tableware 15 is made of a light metal such as an aluminum material having a high thermal conductivity. Are better.
Therefore, the heated food / drink A is not easily refrigerated because it is difficult for heat to escape to the outside even if a little time elapses after heating.

Fourth, the tableware 15 is made of a light metal such as an aluminum material, and the outside is covered with a resin such as a silicon material 17.
Therefore, with such a coating, the tableware 15 is excellent in absorbability of impact load, → the drop strength is improved, it does not break even if dropped, it does not deform even when it hits a hard object, and the contact sound between the tableware 15 There are few. In addition, by such coating, the tableware 15 is prevented from being corroded despite being made of a light metal such as an aluminum material. Furthermore, inadvertent sliding is also prevented.

About the evaluation test
FIG. 1 (2) shows the results of the evaluation test. That is, using the tableware 15 of this example to which the present invention is applied, the resin tableware 1 of this type of conventional example, and the tableware 2 of this type of conventional aluminum material, the surface heat generation temperature is about 140 ° C. This is data obtained by heating test with the heater 10.
O As the food and drink A requiring heating, cooked rice and cold rice were used.
O Heating was stopped in 39 minutes after the start of heating by the heater 10, and then maintained in the hold state. In addition, the heating target reference value of rice is a core temperature of 75 ° C.
As the tableware 15 of the present invention, a flat plate having a diameter of 116 mm and a height of 46 mm made of an aluminum material having a thickness of 1.5 mm was used. And what coated with the silicon | silicone material 17 whose thickness of the side surface B is 0.7 mm and whose bottom surface C is 0.3 mm was used. As the tableware 1 and 2 of the conventional example, those having a wall thickness of 1.5 mm were used.

As a result of such an evaluation test, the data shown in FIG. 1 (2) was obtained.
And the tableware 15 of this invention is equipped with the heating performance far superior to the tableware 1 (made of resin) of this kind conventional example, and the heating performance substantially equivalent to the tableware 2 (made of aluminum) of this kind conventional example. Demonstrated. That is, the core temperature of 75 ° C. as the heating target reference value was surely cleared, and after that, it could be held above this temperature. That is, sufficient heating and uniform heating have been demonstrated.
Furthermore, unlike the conventional tableware 2 of this kind, the tableware 15 of the present invention having excellent heating performance is covered with a silicon material 17 or the like and can be held by hand. It has the advantage that it has excellent heat retention and also excellent strength.

About the tableware for service carts concerning this invention, it uses for description of the best form for implementing invention, (1) A figure is a front sectional view, (2) A figure is a graph of an evaluation test. It is a perspective view of a service cart, (1) A figure shows the whole and (2) A figure shows a tray and tableware. It is the front sectional view of the important section showing other examples of a service cart. This type of conventional tableware for a service cart is shown. (1) Fig. 1 is a front sectional view of a resin tableware as one example, and (2) Fig. 2 is an aluminum tableware as another example. It is a front sectional view.

Explanation of symbols

1 Tableware (conventional example)
2 Tableware (conventional example)
3 Service Cart 4 Door 5 Wheel 6 Top Plate 7 Side Plate 8 Back Plate 9 Floor Plate 10 Heater 11 Control Unit 12 Guide Rail 13 Tray 13 'Tray 14 Shelf Plate 15 Tableware (Invention)
16 Tableware 17 Silicone material 18 Lid A Food / Beverage B Side C Bottom D

Claims (3)

A tableware for a service cart that is used in a service cart provided for a food and drink providing service, the food or drink that requires heating is put in, and heated by a heater from below,
A tableware for a service cart, which is made of an aluminum material or other light metal and is covered with a silicon material or other resin having low thermal conductivity, and is coated on the outside.   The tableware is covered with the silicon material on the outside of the side surface and the bottom surface. The silicon material has a side wall thickness of 0.5 mm or more and 1.0 mm or less, and a bottom wall thickness of 0. The tableware for service carts according to claim 1, wherein the tableware comprises 2 mm or more and 0.5 mm or less.   The tableware for service carts according to claim 2, wherein the tableware is used as a rice cooker.

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