JPH07255611A - Serving car - Google Patents

Abstract

PURPOSE:To avoid difference in temperature between an upper section and a lower section of a heating storage space for a serving car so that dishes contained in the upper section and in the lower section can be uniformly heated. CONSTITUTION:Trays T are contained in heating storage spaces 12 in a serving car 10. Each of the heating spaces 12 is divided into sections 12a, 12b and 12c, each having a plurality of shelves, by means of the trays T, shelves 16 and 17 supporting the trays T. The sections 12a, 12b and 12c are provided with temperature sensors and heating elements H1, H2 and H3, respectively, so that respective temperatures of the sections 12a, 12b and 12c are individually controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serving vehicle used for transporting a dining table, and more particularly to a serving vehicle having a warming cabinet capable of keeping the housed dishes warm.

[0002]

2. Description of the Related Art In hospitals and other facilities, the use of a catering car is remarkable when transporting a meal.

[0003] Conventionally, as the serving car, there is known one having a heating cabinet capable of keeping the housed food warm.

As the heat retaining means, a convection heating method is used, such as a method of introducing hot air from a warm air machine to the heating cabinet, or a method of utilizing the heat generation of dichrome built in the side wall of the heating cabinet. Was the mainstream.

[0005]

However, according to the above-mentioned conventional heat retaining means, the high temperature air rises and the low temperature air falls in the air convection.
There was a drawback that the temperature difference between the upper and lower stages of the onsen was so large that it was impossible to keep all the dishes in a suitable condition.

In order to solve the above-mentioned drawbacks, there has been proposed a method in which a fan or the like is provided in the warm storage to circulate the air in the upper and lower stages. According to this means, it is possible to dry the housed dishes. I will promote it.

On the other hand, the convection type heat retaining means has a drawback that a large amount of heat is lost when the door is opened and closed, and at that time, the temperature of the cooking table is lowered due to the outflow of the atmosphere in the refrigerator.

In addition, in the conventional serving car, when a meal such as grilled fish is accommodated, there is a problem that an odor adheres to the inside of the refrigerator and the odor is transferred to another meal.

[0009]

In order to achieve the above-mentioned object, the present invention provides a tray containing a heating cabinet having a heating element built in a side wall thereof, and a tray accommodated in the heating cabinet, The inside of the refrigerator is divided into a plurality of small chambers by a receiving rack that supports this tray, and a temperature sensor and the heating element are provided for each small chamber so that temperature control can be performed for each small chamber. The present invention aims to provide a car-serving vehicle characterized by the above, and to prevent the temperature difference between the upper and lower sides as much as possible.

Further, according to the present invention, there is provided a serving vehicle having a heating cabinet having a heating element built in a side wall thereof, wherein an inner wall surface of the side wall is made of a stainless steel plate coated with a ceramic. The purpose of the present invention is to provide a car and prevent the temperature of the dining table from lowering when the door is opened and closed.

Further, according to the present invention, in a food-serving vehicle having a heating cabinet having a heating element built in the side wall, the inner wall surface of the side wall is made of a stainless steel plate coated with ceramics and a deodorant paint. It aims to remove the odor that remains in the refrigerator by providing a characteristic serving car.

Further, the present invention is to provide a food-serving vehicle in which the heating element is made of a fibrous heating material, and to prevent defective heating due to disconnection or the like.

Further, the present invention provides a serving vehicle using a far-infrared reflecting material in a receiving rack for supporting trays accommodated in a warm storage, and uniform far-infrared irradiation is applied to all the accommodated dishes. It's something you want to do.

[0014]

According to the first aspect of the invention, the height difference between the small chambers partitioned by the tray and the receiving rack is small, and therefore the temperature difference between the upper and lower portions is also reduced. Therefore, the housed dish can be heated and kept uniform. Particularly, by providing a temperature sensor and a heating element for each small chamber, the temperature difference between the upper and lower small chambers can be reduced, and uniform heating and heat retention can be achieved in each small chamber.

On the other hand, in the invention of claim 2, when the heating element is energized, the heating element generates heat, and the heat is conducted to the stainless plate to heat it. Then, the heat is radiated as far infrared rays having a wavelength of 5 to 25 μm in the ceramic coating layer and directly radiates the housed dish.

Further, in the third aspect of the invention, the odor remaining in the refrigerator is removed by the adsorbing action of the deodorizing paint.

Further, in the invention of claim 4, due to the function of the fibrous heat generating material having excellent corrosion resistance, the disconnection, and hence the heat generation defect, can be prevented. In particular, since a large number of capillaries extending in a mesh form the current-carrying path, it is possible for the other capillaries to compensate for the partial breakage and to carry the current.

Further, in the invention of claim 5, the receiving rack made of the far infrared ray reflecting material focuses or diffusely reflects the far infrared rays emitted from the side wall. Far-infrared rays show a straight-line property, and at the same time, they have the property of heating only the irradiation surface, so that the dishes housed in the shaded areas are not heated. Therefore, by using the receiving rack to focus and diffusely reflect the far infrared rays, it is possible to heat all of the accommodated dishes without exception.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS To explain the embodiments of the present invention, FIG. 1 is a front view showing the inside of a car. Reference numeral 12 in the drawing is a warm storage and 13 is a refrigerator.

As shown in the figure, the interior of the food-serving car 10 is partitioned by partition walls 11 and 11, and on both sides of the partition 12,
12 and a refrigerator 13 are provided in the center. For example, the hot storages 12 and 12 store the temperature of the dishes to be stored in the range of 70 to 8
Keep the temperature at 0 ° C.
It can be kept cold at 0 ℃.

As the heat and cold keeping means, a warm storage 12,
Reference numeral 12 denotes heating elements H1, H2, H built in the side walls 14, 14.
3 is energized, and the refrigerator 13 uses a refrigerator built in the electric component section 15 to send cold air through the partition walls 11, 11.

Further, the partition walls 11 and 11 have receiving shelves 1 on both sides.
6, ... are fixed in multiple stages, and the receiving shelves 16 ,.
Tray T housed in the refrigerators 12, 12 and the refrigerator 13
Is being supported.

In particular, the side walls 1 in the hot storages 12, 12.
4, 14 are also provided with receiving shelves 17, ..., A tray T to be accommodated and receiving shelves 16, 1 for supporting the tray T.
7, the inside of the storage 12 and 12 is three small chambers 12.
It is designed to be divided into a, 12b and 12c.

By the way, the heating elements H1, H2, H3
As shown in the drawing, they are provided separately in the state of being adjacent to the small chambers 12a, 12b, 12c, respectively, and are individually turned on / off by temperature sensors described later.

When the tray T is removed, the small chamber 12
Since a, 12b, and 12b are communicated with each other, cleaning the inside of the container is easy, and in particular, a cleaning device that introduces a cleaning nozzle into the container and moves it up and down to clean it (Japanese Patent Application No.
No. 44212) is possible.

Further, in FIG. 1, 18 is a fixed wheel, 1
Reference numeral 9 is a turning wheel, 20 is a column, and 21 is a bottom heating element. This bottom heating element 21 is built in the bottom of the heating cabinets 12, 12 and heats the humidifying tray arranged therein to heat the heating cabinet. 1
The purpose is to allow the inside of 2, 2 to be appropriately humidified.

Next, as is apparent from the plan view of the inside of the catering car shown in FIG. 2, the heating cabinets 12 and 12 and the refrigerator 13 are shown.
, 22 are provided on the front and rear surfaces of the refrigerator, and in particular, the doors 22, ... of the refrigerator 12, 12 are on the side walls 14, 14, and the doors 23 ,. 20 via hinges, respectively, and partition walls 11,
It is designed so that the gannon is opened on the basis of 11.

The tray T has a concave shape as shown in the drawing, and is arranged such that the connecting portion is inserted into the notch groove formed in the end faces of the partition walls 11, 11.

Next, FIG. 3 is a side view of the same car, and the symbol S in the drawing indicates the above-mentioned temperature sensor.

The temperature sensor S is fixed to the inner wall surface of the side wall 14 and is connected to the heating elements H1, H2 and H3 through predetermined electric circuits.

When the value detected by the temperature sensor S exceeds a certain value, for example, 80 ° C. or more, the heating elements H1 to H3 corresponding to the temperature sensor S are turned off, and the detected value Is below a certain level, for example below 70 ° C, the heating elements H1 to H3 corresponding to the temperature sensor S are
Is energized.

As the temperature sensor S, a thermostat using a bimetal, a thermistor, a thermocouple or a platinum resistance thermometer can be used.

Further, reference characters S ', ... In the figure are auxiliary sensors composed of a thermostat or the like. The auxiliary sensor S'is provided in each small chamber and detects the upper limit temperature of each small chamber, for example, 90 ° C. It is a safety device that forcibly shuts off the energization of the corresponding heating elements H1 to H3 at that time to prevent overheating.

Next, FIG. 4 shows a cross section taken along line XX 'in FIG. As is clear from this figure, the side wall 14 is provided with the deodorant paint 31, ceramics 32, stainless plate 33, insulator 34, heating element H3, insulator 34, adhesive sheet 35, heat insulating material 36, stainless plate 37 from the inside. It is said that.

The deodorizing paint comprises activated carbon, silica gel, activated clay or potassium permanganate, bleaching powder, phenol, formalin, ascorbic acid-iron salt, preferably activated carbon exhibiting adsorptivity, silica gel, activated clay.
Further, the ceramics include metal oxides of groups 6 to 8 such as manganese dioxide, iron oxide, chromium oxide, and cobalt oxide and copper oxide, zirconia, alumina, zircon, titania, and their composites, preferably in the entire wavelength range. It is considered to be a silicone resin-based paint containing manganese dioxide and iron oxide, which have a high emissivity for infrared rays.

The ceramic 32 is applied to the surface of the stainless steel plate 33 which is the inner wall surface of the side wall 14, and the deodorant paint 31 is applied to the surface of the ceramic 32.
It is applied about 0 to 50 μm and baked at 350 ° C. for about 20 minutes.

The heating element H3 (including H1 and H2) is
It is a sheet-like or fibrous heating material made of carbon fiber, glass fiber, silicon carbide fiber or the like, and is sandwiched between insulators 34, 34 made of epoxy resin or the like.
4, 34 are impregnated and insulated.

When the fibrous heat generating material which is said to have strong corrosion resistance as described above is used as the heat generating elements H1 to H3, the risk of disconnection and, in turn, heat generation failure is extremely small, which is preferable. Of course, the use of dichrome wire is also possible.

On the other hand, the heat insulating material 36 is glass wool or rock wool, and the heat generating elements H1 to H1 through the adhesive sheet 35 are used.
H3, to be precise, it is adhered to an insulator 34 that insulates it.

Next, FIG. 5 is a partially enlarged view of the storage cabinet.
In the figure, the arrow indicates the emission state of far infrared rays emitted from the side wall 14.

As shown, the emitted far infrared rays are
It is diffusely reflected by the L-shaped receiving rack 16 and is also radiated to another dining table R'located behind the dining table R. This is because the receiving rack 16 is made of a far infrared ray reflecting material.

As the far-infrared reflecting material, it is preferable to use a material that does not contain carbon such as stainless steel, for example, aluminum or copper, or an alloy thereof. Particularly, an aluminum plate having a mirror finish is most preferable in terms of reflectance. Suitable.

The receiving shelves 16 and 17 may be formed by plastic working of an aluminum plate, or the receiving shelves 16 and 17 formed of another metal plate may be plated with aluminum by vapor deposition or fusion. You may do it.

By the way, reference numeral 11a in the drawing is the above-mentioned notch groove into which the connecting portion t of the tray T is inserted in the state as shown.

[0045]

The present invention has the following effects because it is constructed as described above.

(1) In a catering machine having a heating cabinet with a heating element built in its side wall, the inside of the heating cabinet is composed of a tray accommodated in the heating cabinet and a receiving rack supporting the tray. By dividing the room into a plurality of small chambers, and by providing a temperature sensor and a heating element for each small chamber, it is possible to reduce the temperature difference between the upper and lower chambers and eliminate the temperature difference between the small chambers. It has an excellent effect that it can keep the served meal even.

(2) Further, by using a stainless steel plate having a ceramic coating on the inner wall surface of the side wall, far infrared rays are radiated to the inside of the refrigerator, so that it is compared with the heating method by convection. Thus, it is possible to obtain a remarkably high heating efficiency, and it is possible to prevent a decrease in the temperature of the food due to heat loss when the door is opened and closed, and it is also possible to prevent the food from being dried.

(3) Further, by using a stainless plate having a film of deodorant paint on the inner wall surface of the side wall, it is possible to remove the odor remaining in the refrigerator, so that other odors are transferred to the serving table. It has an excellent effect that adverse effects such as are not exerted.

(4) Further, by using the fibrous heating material for the heating element, there is an excellent effect that the risk of disconnection can be reduced as compared with the conventional dichrome wire.

(5) Further, by using a far-infrared reflecting material for the receiving rack that supports the trays housed in the warm storage, the far-infrared rays emitted from the side wall can be focused and diffusely reflected, so that all the houses are accommodated. Irradiate far infrared rays to the dining table of
It has an excellent effect that it can be heated.

[Brief description of drawings]

FIG. 1 is a front view showing the internal structure of a catering car according to the present invention.

FIG. 2 is a plan view showing the internal structure of the same car.

FIG. 3 is a side view showing the same delivery car.

FIG. 4 is a sectional view taken along line XX ′ in FIG.

[Fig. 5] Partly enlarged view of the inside of the refrigerator in the same car

[Explanation of symbols]

 10 Carriage 11 Partition 12 Heat storage 12a, 12b, 12c Small room 13 Refrigerator 14 Side wall 15 Electrical component 16, 17 Receiver shelf 21 Bottom heating element 31 Deodorant paint 32 Ceramics 33 Stainless steel plate H1, H2, H3 Heating element T Tray S Temperature sensor

Claims (5)

[Claims] 1. A tray including a heating cabinet having a heating element built in a side wall thereof, and a tray accommodated in the heating cabinet,
The inside of the refrigerator is divided into a plurality of small chambers by a receiving shelf that supports this tray, and a temperature sensor and the heating element are provided for each small chamber so that temperature control can be performed in small chamber units. A car that is characterized by 2. A catering car having a heating cabinet with a heating element built into its side wall, wherein the inner wall surface of said side wall is made of a stainless steel plate coated with ceramics. 3. A catering car having a heating cabinet with a heating element built in its side wall, wherein the inner wall surface of said side wall is made of a stainless steel plate coated with a ceramic and a deodorant paint. car. 4. The vehicle according to claim 1, 2, or 3, wherein the heating element is made of a fibrous heating material. 5. The food delivery vehicle according to claim 2, wherein a far-infrared reflecting material is used for the receiving rack that supports the trays accommodated in the warm storage.