DE102010052900B4 - Gas system, in particular for the operation of food trucks - Google Patents

Abstract

The invention relates to a device (1) for providing gas, in particular for the operation of mobile kitchen components (2), comprising at least one container (4) for providing a fluid and at least one at least temporarily fluidly communicating with the container (4) consumers (2). According to the fluid communication path (6) between the at least one container (4) and the at least one consumer (2) the fluid communication path (6) in different functional sections (8a, 8b, 8c) dividing means for regulating (10a, 10b) of the fluid pressure formed in which the fluid in a first functional section (8a), in which the container (4) is arranged, has a pressure that deviates from the pressure in a second functional section (8b).

Description

The present invention relates to a device for providing gas according to the preamble of patent claim 1 and a method for providing gas according to the preamble of patent claim 8.

Devices for providing gas are used, for example, in the field of kitchen technology, in particular in the field of mobile kitchens, where they provide a simple and efficient solution for generating or providing heat energy.

Known here are arrangements of a gas cylinder and one or more consumers. In the case of large kitchen equipment, however, it is necessary to provide a large amount of heat energy over a long period of time. Furthermore, gas bottles have the problem that when the bottle is emptied quickly or gas is rapidly released due to the expansion of the fluid under high pressure in the gas bottle, the gas bottle and the gas or liquid provided therein are cooled down considerably becomes. It is therefore in cold weather and especially when removing large amounts of gas quickly reached a point at which the liquid, d. H. the fuel in the liquid state, the boiling temperature falls below and further evaporation or gas removal is no longer possible. By replacing a then erroneously regarded as empty bottle can result in not completely closed cylinder valve a dangerous situation. As a result of further heat, for example, by the ambient air, the evaporation starts again and gaseous liquefied gas exits uncontrolled or unnoticed. Therefore, so far only smaller consumers can be supplied with gas and the duration of the gas supply is also not optimal due to the insufficient emptying of the gas cylinder.

In the publication DE 100 65 268 C1 a pressure vessel with integrated control for a pressurized medium is disclosed. The pressure vessel is provided with a control device which emits the gas and has a shut-off valve, and a pressure reducer with a high-pressure part and a low-pressure part. For example, an engine of a vehicle can be connected to the pressure vessel.

The publication DE 196 19 779 A1 discloses an installation for supplying gas under low pressure. In this case, one or a series of bottles, which have a gas under high pressure, connected to a line and shut off by a tap against this. A change-over switch is provided, which is intended to alternatively connect one of the lines to a distribution network for gas, which is connected to a consumer. Furthermore, there is at least one pressure reducer in the distribution network to bring the high pressure from the bottle to a low "network pressure". It is therefore the object of the present invention to provide an apparatus and a method which enables a supply of consumers with a large amount of gas over a long period in a secure manner, in particular, a icing of the gas cylinder or bottles, are prevented during operation should.

The object is solved by the features of independent claims 1 or 8. According to the invention, an apparatus for providing gas for the operation of stationary or mobile kitchen components or kibbled kitchens, for preventing icing of a gas cylinder. The device comprises at least one container of icings of a gas cylinder, dissolved. The device comprises at least one container or a gas cylinder for providing a gas which is under high pressure and in a liquid state of aggregation, and at least one consumer communicating at least at times directly or indirectly fluidly with the container or the gas cylinder. According to the invention, in the fluid communication path between the at least one container or the one gas cylinder and the at least one consumer, this fluid communication path is formed into different functional sections dividing means for regulating the gas pressure, the gas having a pressure in a first functional section in which the container is arranged which is higher than in a second functional section and wherein the pressure of the fluid in the second functional section ( 8b ) is higher than in the third functional section ( 8c ), and the second functional section ( 8b ) on the other hand by a second means of regulation ( 10b ) and wherein the first functional section ( 8a ) is a high-pressure area, the second functional section ( 8b ) a medium pressure range with a pressure of between 1.0 bar and 2.0 bar and the third functional portion ( 8c ) a low pressure range, for a pressure between 10 mbar-200 mbar.

This is advantageous because a step-by-step relaxation of the fluid is possible, as a result of which only little or no temperature changes occur on and / or in the gas cylinder.

According to a further preferred embodiment of the present invention, in the first functional section, at least two containers are provided for providing gas, at least in sections, via the same line connections to the at least one consumer.

This embodiment is advantageous because large quantities of fluid can be provided by the multiplicity of containers. It is also conceivable that 2 to 40 containers, preferably 3 to 30 containers and more preferably 4 to 10 containers, in particular exactly 2, 3, 4, 5, 6, 7, 8, 9 or 10 containers, are provided. Furthermore, it is conceivable that a varying number of containers may be provided, d. h., That the device, depending on the application temporarily with 2, 3, 4 etc. containers operable. According to a further preferred embodiment of the present invention, the first functional section and the second functional section are limited by a first means for regulating.

This embodiment is advantageous because the fluid or functional fluid can be kept in different configurations. Furthermore, depending on the exact configuration of a particular gas supply device, the individual functional sections can be or will be adapted to the requirements. Thus, it is conceivable that the fluid has different temperatures and / or pressures in the various functional areas, whereby more expensive or less expensive lines or line connection sections can be provided depending on the configuration of the fluid. This makes it possible to achieve a reduction in the production costs, since the more expensive areas can be reduced in terms of size or length to a minimum.

According to the invention, a third functional section is provided, in which the pressure of the fluid deviates from the pressure in the second functional section, wherein the pressure in the second functional section is preferably higher than in the third functional section, and the second functional area, on the other hand, is limited by a second regulating means.

This embodiment is advantageous because further subdivisions of the fluid communication path are possible, as a result of which the fluid can be relaxed in several stages, particularly preferably 2 to 8 stages and particularly preferably 3 to 5 stages. It is also conceivable here that further devices for relaxing or decompressing the fluid are provided. Furthermore, it is conceivable that the means for controlling electrically, pneumatically, hydraulically, mechanically, in particular automatically and / or manually, are controllable. Preferably, the means for controlling are designed such that the fluid communication between at least two functional sections is completely interruptible.

According to the invention, the pressure of the fluid in the first functional section is higher than in the second functional section and the pressure of the fluid in the second functional section is higher than in a third functional section, the first functional section being a high-pressure area, the second functional section being a medium-pressure area having a pressure between 1.0 bar-2.0 bar and the third functional section is a low-pressure region for a pressure between 10 mbar-200 mbar, wherein preferably the first means for controlling a medium-pressure regulator and the second means for controlling is a low-pressure regulator.

This embodiment is advantageous because the fluid can be reconfigured in a simple and essentially wear-free manner. It is conceivable that one of the controllers, several, all or none of the controller is adjustable, d. H. that preferably the configuration changes, in particular the pressure change (s), can be influenced.

According to a further preferred embodiment of the present invention, the containers are replaceable gas cylinders and are preferably used to hold 25-40 kg of fluid.

This embodiment is advantageous because standard bottles can be used, which are distributed in a high number and are inexpensive to use. It is also conceivable that containers of different sizes can be provided. It is also conceivable that the containers or one or more containers are gas tanks. Furthermore, it is conceivable that individual or all gas cylinders and / or gas tanks fixed, d. H. are not arranged interchangeable, and are preferably fillable by means of another conduit means.

According to a further preferred embodiment of the present invention, the gas provided is combustible and preferably propane and / or butane.

This embodiment is advantageous because it allows a very clean and easy-to-control way of providing heat energy. The calorific value of 1 kg of propane corresponds to 12.87 kWh, therefore, for example, for a gas appliance with a nominal heat output of 24 kW, a liquid gas consumption of about 1.86 kg / h is required.

According to a further preferred embodiment of the present invention, at least one consumer is a consumer selected from the group consisting at least of a gas stove, a fryer, a water treatment device.

The invention is also directed to a method of providing gas for the operation of mobile kitchen components, for preventing icing of a gas cylinder. The method preferably comprises the steps of providing a gas under high pressure and in a liquid state with at least one container and the at least temporary direct and / or indirect fluid communication of the container or gas cylinder with at least one consumer. According to the invention, the gas pressure is modified by means for regulating, wherein the means for regulating in the fluid communication path between the at least one container or the at least one gas cylinder and the at least one consumer are designed to limit different functional sections of this fluid communication path, wherein the gas in a first functional section, in which the container is arranged is provided with a pressure which is higher than the pressure in a second functional section and wherein a third functional section ( 8c ) is provided, wherein the pressure of the fluid in the second functional section ( 8b ) is higher than in the third functional section ( 8c ), and the second functional section ( 8b ) on the other hand by a second means of regulation ( 10b ) and wherein the first functional section ( 8a ) is a high-pressure area, the second functional section ( 8b ) a medium pressure range and the third functional portion ( 8c ) a low pressure area.

In the table below, reference values for the possible gas removal from the gas phase of LPG cylinders are shown. bottle sizes Type of removal or load option in kg / h 5 kg 11 kg 33 kg Short-term or in case of an abrupt removal (20 min.) 1.0 kg / h 1.5 kg / h 3.0 kg / h Periodically or at 50% interruptions 0.5 kg / h 0.8 kg / h 1.8 kg / h permanent removal 0.2 kg / h 0.3 kg / h 0.6 kg / h

According to the present invention, it is possible for a gas supply with four 33 kg gas cylinders to allow a connection value of 98 KW long term. The gas consumption to reach the connection value is 8.5 kg / h. It can be seen from the table that with four gas bottles 33 kg a proper operation is not possible. By the method and apparatus of the invention, however, the evaporator performance of the gas cylinder is increased because icing of the bottles is prevented. As a result, users safely save time, money and energy. Investigations and experiments have shown that when using the inventive method or use of the device according to the invention, the connection value of 98 KW can be achieved long term, for example, only two gas cylinders and this without icing or almost no icing of the gas cylinders occurs.

Further advantages, objects, and features of the present invention will become apparent from the following description of accompanying drawings, in which exemplary devices and components for the provision of gas are shown. Components of the gas supply device, which in the figures at least substantially coincide in terms of their function, can be identified here with the same reference numerals, these components need not be quantified or explained in all figures.

Show:

1 a first representation of a structure of the gas supply device according to the invention;

2 a second representation of a structure of the gas supply device according to the invention;

three a mobile kitchen assembly with built-in gas delivery device; and

4a -D views of components of the gas delivery device according to the invention.

In 1 is a first schematic representation of the gas supply device according to the invention 1 displayed. From containers 4a , b, the preferred gas cylinders, in particular the sizes 5 . 11 and / or 33 kg, and / or gas tanks, extends a fluid communication path 6 to consumers not shown.

The fluid communication path 6 is through one or more lines, in particular through the line sections 7a -D, formed. A first line section 7a also provides a first functional section 8a which preferably on the one hand through the containers 4 and on the other hand preferably by the first means for controlling the fluid communication 10a , in particular a medium-pressure regulator 12 , is limited.

A second functional section 8b preferably extends between the first means for controlling the fluid communication 10a and a second means for controlling fluid communication 10b , The fluid is in the second functional section 8b preferably through the line section 7b guided. The second means for controlling fluid communication 10b is preferably a low pressure regulator 14 ,

The fluid or gas is preferably by means of a further or third line section 7c to one or more fourth line sections 7d guided. It is conceivable that the line sections 7c and 7d are uniform or similar or different. For example, the line sections 7a . 7d be formed with an outer diameter of 15 mm (DN 15) and the line sections 7b . 7c can be designed with an outside diameter of 22 mm (DN 22).

In 2 is a further illustration of the gas supply device according to the invention 1 shown. This gas delivery device 1 can, like those in 1 shown arrangement to be provided as a pre-assembled compact system. The reference number 5 preferably denotes ports for coupling with the containers 4 (Not shown).

About the pipe section 7a , which is preferably designed as a high-pressure line, in particular as a high-pressure hose or pipe, the fluid passes to a shut-off block 11 , in particular a multiple or double block. After the double shut-off block 11 is in the fluid communication path 6 preferably a medium pressure regulator 12 , in particular with between 1.0 bar and 2.0 bar, preferably between 1.2 bar and 1.8 bar, and particularly preferably 1.5 bar and between 15 and 35 kg / h, preferably between 20 and 30 kg / h and more preferably 24 kg / h of power provided.

Another line or another line section 7b , which can also be configured as a tube or hose, connects the medium-pressure regulator 12 preferably with a low-pressure regulator 14 (For pressures between 10 mbar and 200 mbar, preferably between 30 mbar and 100 mbar and particularly preferably 50 mbar), in particular a 20-60 kg, ¾ inch low-pressure regulator 14 , After the low pressure regulator 14 are the consumers 2 preferably individually, in particular parallel to each other, connected to the line.

It is also conceivable that consumers 2 are connected in series or that there is a combined Riehen / parallel connection. Particularly preferred is in the low pressure supply line 7b the wiring routed outside. At the pipe section 7b it may particularly preferably be a stainless steel all-gas hose ½ '', PN4 1 m in length. The reference number 13 denotes a mudflap.

In three is a mobile kitchen arrangement with the gas delivery device 1 shown. The consumers 2 are preferred fryers, especially fish fryers 25 , or single fryers 26 , Roasting plate / s 28 , Grill etc, where a fish fryer preferably has a connected load of 24 kW, a single fryer of 14 kW and a frying plate of 14 kW.

Consumers are preferred in a cabinet 24 the kitchen or mobile kitchen 20 built-in and accessible from the top and / or the side, being conceivable that doors 22 are intended for demarcation.

It's the three furthermore, that from the container 4a a line to the fish fryer 25 leads. Further leads from the container 4b a line to the other fish fryer 25 , Both fish fryers preferably have a power of 28 kW, for example, at a consumption of 2.2 kg fluid / h. The container 4c is over three lines with the two single fryers 26 and the frying plate 28 connected. The single fryers 26 and the frying plate 28 each preferably have a power of 14 kW at a total consumption of 3.3 kg fluid / h.

In the 4a - 4d are exemplified components that can be used individually or multiply in the gas supply device according to the invention.

In 4a is a low-pressure regulator, in particular the low-pressure regulator type D150 PS 16 bar GOK shown.

In 4b Two medium-pressure regulator are shown, in particular the medium-pressure regulator PS 25 bar type 0137 or type 0136 GOK.

In 4c Double shut-off blocks, in particular the double shut-off blocks PS 16 bar with quick-acting valve or regulating valve of GOK, are shown.

In 4d are hoses, especially G-hoses, high pressure PS 30 bar GOK shown.

LIST OF REFERENCE NUMBERS

1

Gas supply device

2

Consumer / kitchen components

4a, b, c

container

5

connection

6

fluid communication path

7a, b, c, d

line sections

8a, b, c

functional sections

10a, b

Means of regulation

11

Doppelabsperrblock

12

Medium-pressure regulator

13

strainer

14

Low-pressure regulator

16

High pressure hose

20

mobile kitchen

22

door

24

cabinet

25

fish fryer

26

Single fryer

28

griddle

Claims (8)

Contraption ( 1 ) for providing gas for the operation of stationary or mobile kitchen components ( 2 ), for preventing icing of a gas cylinder ( 4 ) comprising at least one gas cylinder ( 4 ) for providing a gas which is under high pressure and in a liquid state of aggregation, and at least at least temporarily fluidly with the gas cylinder ( 4 consumers ( 2 ), characterized in that in a fluid communication path ( 6 ) between the at least one gas cylinder ( 4 ) and the at least one consumer ( 2 ) this fluid communication path ( 6 ) at least in different functional sections ( 8a . 8b . 8c ) subdividing means for regulating ( 10a . 10b ) are formed of the gas pressure, wherein the gas in a first functional section ( 8a ), in which the gas cylinder ( 4 ), has a pressure which is higher than in a second functional section ( 8b ) and wherein a third functional section ( 8c ) is provided, wherein the pressure of the fluid in the second functional section ( 8b ) is higher than in the third functional section ( 8c ), and the second functional section ( 8b ) on the other hand by a second means of regulation ( 10b ) and wherein the first functional section ( 8a ) is a high-pressure area, the second functional section ( 8b ) a medium pressure range with a pressure of between 1.0 bar and 2.0 bar and the third functional portion ( 8c ) a low pressure range, for a pressure between 10 mbar-200 mbar. Gas supply device ( 1 ) according to claim 1, characterized in that in the first functional section ( 8a ) at least two at least in sections via the same line connection ( 6 ) with the at least one consumer ( 2 ) communicating gas cylinders ( 4 ) are arranged. Gas supply device ( 1 ) according to claim 1 or 2, characterized in that the first functional section ( 8a ) and the second functional section ( 8b ) by a first means of controlling ( 10a ) are limited. Gas supply device ( 1 ) according to claim 1, characterized in that by the first means ( 10a ), in particular a medium-pressure regulator, on the one hand, and the second means of 10b ), in particular a low-pressure regulator, on the other hand, the second functional section is limited. Gas supply device ( 1 ) according to one of the preceding claims, characterized in that the gas cylinders ( 4 ) are replaceable gas cylinders and preferably serve to receive 25-40 kg of fluid. Gas supply device ( 1 ) according to one of the preceding claims, characterized in that the gas provided is combustible and is preferably propane and / or butane. Gas supply device ( 1 ) according to one of the preceding claims, characterized in that at least one consumer ( 2 ) a consumer ( 2 ) selected from the group consisting at least of gas stove, fryer, grill or water treatment device. Gas supply method for the operation of stationary or mobile kitchen components ( 2 ) for preventing icing of a gas cylinder ( 4 ), comprising the steps of providing a gas under high pressure and in a liquid state of aggregation with at least one gas cylinder ( 4 ) and the at least temporary fluidly communicating the gas cylinder ( 4 ) with at least one consumer ( 2 ), characterized in that the gas pressure with means for regulating ( 10a . 10b ), the means of controlling ( 10a . 10b ) in a fluid communication pathway ( 6 ) between the at least one gas cylinder ( 4 ) and the at least one consumer ( 2 ) for limiting different functional sections ( 8a . 8b . 8c ) of this fluid communication pathway ( 6 ) are formed, wherein the gas in a first functional section ( 6 ), in which the gas cylinder ( 4 ) is provided with a pressure which is higher than the pressure in a second functional section ( 8b ) and wherein a third functional section ( 8c ) is provided, wherein the pressure of the fluid in the second functional section ( 8b ) is higher than in the third functional section ( 8c ), and the second functional section ( 8b ) on the other hand by a second means of regulation ( 10b ) and wherein the first functional section ( 8a ) is a high-pressure area, the second functional section ( 8b ) a medium pressure range with a pressure of between 1.0 bar and 2.0 bar and the third functional portion ( 8c ) a low pressure range, for a pressure between 10 mbar-200 mbar.

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