Administration method and related facilities

Abstract

To provide a dosing method for making it possible to improve the precision of the dosing between a base product and an injection product.SOLUTION: A method for dosing an injection product into a base product, in particular, for the production of a finishing and / or protective paint product, includes the following steps: (a) supply of a mixing device (12), (b) establishment of a continuous flow of the base product, (c) injection of the injection product into the continuous flow for a given time, (d) measurement of the amount of the injection product injected, and (e) calculation of a desired amount of the base product based on the amount of the injection product injected, where the steps (c), (d) and (e) are repeated when the amount of the base product having passed since the start of the step (c) is equal to the amount of the base product desired, the injection product being injected into the base product only during the step (c).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for administering an injection product to a base product, in particular for the manufacture of a finishing and / or protective coating product.

[0002] The invention further relates to associated administration facilities. [Background technology]

[0003] Currently, a continuous flow of base product is produced and at regular intervals an amount of injection product is injected into the base product via the injection valve depending on the amount of base product flowed in the previous interval.

[0004] This allows one to obtain the desired ratio between the base product and the infused product.

[0005] However, it is difficult to control the amount of injection product injected.

[0006] On the one hand, the infusion duration of the infusion product must be adjusted as a function of the amount of base product flowing in the interval as well as as a function of the flow rate of the infusion product during the infusion.

[0007] On the other hand, the injection time is usually rather short compared to the mode of operation of the injection valve, so that depending on the amount of base product flowed and the flow rate of the injection product, very fine theoretical adjustment of the duration of the injection product may not be accurately performed by the injection valve. Summary of the Invention [Problem to be solved by the invention]

[0008] It is therefore an object of the present invention to provide a dosing method which makes it possible to improve the dosing accuracy between the base product and the infused product. [Means for solving the problem]

[0009] To this end, the present invention relates to a method of administration of the aforementioned type, comprising the following steps: (a) the provision of equipment for mixing the infusion product and the base product; (b) establishing a continuous flow of base product in a mixing device, the amount of base product in the continuous flow being measured; (c) injecting the infusion product into a continuous flow of the base product for a given period of time; (d) measuring the amount of infused product infused at a given time; (e) calculating a desired amount of base product based on the measured amount of infused product injected; Including, Steps (c), (d) and (e) are repeated when the measured amount of base product elapsed since the start of step (c) is equal to the desired amount of base product; Only during step (c) is the infusion product infused into the base product; method.

[0010] According to a particular embodiment, the method comprises one or more of the following features, taken alone or in any technically feasible combination: - in step (e) the desired amount of base product is calculated from the desired amount ratio between the base product and the infusion product; - the desired amount of base product is equal to the desired ratio of product and the amount of infused product to be infused at a given time; - the given time is between 0.01 seconds and 10 seconds; - the mixing device is supplied with the injection product via an injection channel, the injection channel being provided with an injection valve, the injection valve being movable between an open position and a closed position; -The injection valve can be computer controlled; - the injection valve is opened at the beginning of the injection step (c) and closed at the end of the injection step (c) after a given time; and the mixing device is supplied with a base product via a base channel, the inlet channel is equipped with a device for measuring the amount of inlet product passing through the measuring device, the base channel is equipped with a device for measuring the amount of base product passing through the measuring device, Includes.

[0011] The present invention further relates to an installation for dosing an injection product to a base product, in particular an installation for the production of finishing and / or protective coating products, which comprises at least one device for mixing the injection product with the base product, which comprises an injection inlet, a base inlet and a device for mixing the injection product with the base product, and which is capable of carrying out the dosing method described above.

[0012] The present invention also relates to a dosing installation comprising at least two devices for mixing a respective injection product and a respective base product, in particular a dosing installation for the production of finishing and / or protective coating products, each mixing device comprising an injection product inlet, a base product inlet and an outlet for a mixture of injection product and base product, the outlet of a first of the at least two mixing devices being fluidly connected to a second base product inlet or a second injection product inlet of the at least two mixing devices, the dosing installation being capable of carrying out the dosing method described above. [Brief description of the drawings]

[0013] The invention will be better understood on reading the following description, given by way of example only and made with reference to the accompanying drawings, in which: [Figure 1] FIG. 1 is a schematic diagram of a dosing installation according to a first embodiment; [Diagram 2] FIG. 2 is a flow chart of a method of administration according to a first embodiment, which can be implemented by the administration apparatus of FIG. [Diagram 3] FIG. 3 is a schematic diagram of a dosing installation according to a second embodiment; [Figure 4] FIG. 4 is a flow chart of a dosing method according to a second embodiment, which can be implemented by the dosing installation of FIG.

[0014] The terms "upstream" and "downstream" are hereinafter understood in their ordinary sense of fluid flow. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (First embodiment)

[0016] In FIG. 1 a first example of a dosing installation 10 according to the invention for injecting an injection product into a base product is shown.

[0017] Such an installation makes it possible to produce mixtures which form paints or paint bases.

[0018] Infusion products and base products are fluid products.

[0019] The infusion product and base product each have a viscosity of 20 to 5000 centipoise.

[0020] The dosing installation 10 comprises at least one, here one, device 12 for mixing the infusion product and the base product.

[0021] The dispensing equipment 10 further includes a computer 14 .

[0022] The mixing device 12 includes an inlet 15 through which the infusion product is provided.

[0023] The mixing device 12 includes an injection line 16 extending from an injection inlet 15 .

[0024] The mixing device includes a base inlet 17 through which the base product is supplied.

[0025] The mixer 12 includes a base line 18 extending from a base inlet 17 .

[0026] The mixer 12 further includes an outlet 19 provided to provide an outlet for the mixture of infusion product and base product from the mixer 12 .

[0027] The mixing device 12 further includes an exit line 20 .

[0028] The injection line 16 and baseline 18 extend from the respective mixing device inlets 15, 17 to coincident mixing ends 22 of the injection line 16 and baseline 18, respectively.

[0029] An exit line 20 extends from the mixing end 22 to the exit 19 of the mixer 12 .

[0030] The injection line 16 and the baseline 18 meet at a mixing end 22 .

[0031] Inlet product from inlet line 16 and base product from baseline 18 join at mixing end 22 and enter outlet 20 .

[0032] The injection inlet 15 is supplied with the injection product through an injection channel 24 .

[0033] The injection channel 24 measures the amount Q of injection product passing through the measuring device. i , more specifically a device 26 for measuring a volumetric amount.

[0034] Measurements by the measuring device 26 are carried out continuously or periodically, for example at regular intervals at a frequency less than 20 kHz.

[0035] The measuring device 26 is here positioned at a distance of less than 100 centimeters from the valve 28 .

[0036] The measuring device 26 in the injection channel 24 can transmit the measured quantities to the computer 14 .

[0037] The injection channel 24 further comprises an injection valve 28 between the measurement device 26 and the injection inlet 15 , i.e. downstream of the measurement device 26 .

[0038] The infusion valve 28 is movable between an open position, in which the infusion product flows through the valve, and a closed position, in which the infusion product does not flow through the valve.

[0039] The injection valve 28 , and more specifically, the movement of the injection valve 28 between the open and closed positions, may be controlled by the computer 14 .

[0040] The injection channel 24 here also comprises a global injection valve 30 upstream of the measurement device 26 .

[0041] The global infusion valve 30 is movable between an open position, in which the infusion product flows through the valve, and a closed position, in which the infusion product does not flow through the valve.

[0042] A global infusion valve 30 controls the entrance of infusion product into the infusion channel 24 .

[0043] The global injection valve 30 , and more specifically, the movement of the global injection valve 30 between the open and closed positions, may be controlled by the computer 14 .

[0044] The base inlet 17 is supplied with the base product through a base channel 32 .

[0045] The base channel 32 measures the amount Q of base product passing through the measuring device. b , more specifically a device 34 for measuring a volumetric amount.

[0046] Measurements by the measuring device 34 are carried out continuously or periodically, for example at regular intervals at a frequency less than 20 kHz.

[0047] The measuring device 34 can transmit the measured quantities to the computer 14 .

[0048] Here, the base channel 32 has no valve between the measuring device 34 and the base inlet 17 , i.e. downstream of the measuring device 34 .

[0049] The base channel 32 now also comprises a global base valve 36 upstream of the measurement device 34 .

[0050] The global base valve 36 is movable between an open position in which the base product flows through the valve and a closed position in which the base product does not flow through the valve.

[0051] The global base valve 36 , and more specifically, the movement of the global base valve 36 between the open and closed positions, may be controlled by the computer 14 .

[0052] A global base valve 36 controls the entrance of the base product into the base channel 32 .

[0053] A method for administering an infusion product to a base product according to a first embodiment, in particular for the manufacture of a finishing and / or protective coating product, will now be described with reference to FIG.

[0054] The administration method according to this first embodiment is suitable to be carried out by the administration installation described above.

[0055] There is provided an apparatus 12 for mixing an infusion product and a base product, more particularly a dosing set-up 10 as described above.

[0056] The administration method is here carried out via a computer 14 .

[0057] The computer 14 includes a clock t.

[0058] The global inject valve 30 and the global base valve 36 are in their open positions.

[0059] The inlet valve 28 is initially in a closed position.

[0060] A continuous flow of base product is established, more specifically, at the baseline 18 of the mixer 12 via the base channel 32 .

[0061] The continuous flow of base product is at a flow rate of 2 ml / min to 10 l / min.

[0062] The amount of base product in the continuous flow is measured via a measuring device 34 in the base channel 32 .

[0063] Measurements by the measuring device 34 are carried out continuously or periodically, for example at regular intervals at a frequency less than 20 kHz.

[0064] At the start of the injection step, the injection valve 28 is moved, more specifically via the computer 14, to an open position.

[0065] Some of the injection product is injected into the continuous flow of base product during the injection step, more specifically at the mixing end 22 .

[0066] The injection valve 28 is turned on at a given time t x is then moved to the closed position.

[0067] Some infusion product is produced at a given time t x During this time, the base product is injected into a continuous stream of the base product.

[0068] At a given time t x is between 0.01 seconds and 10 seconds.

[0069] More specifically, when the injection valve 28 is moved to the open position, the computer 14 sets the clock t to zero.

[0070] Clock t is at a given time t x When this value is reached, the inlet valve 28 is moved to the closed position, so that only a continuous flow of base product flows.

[0071] Alternatively, the clock t is not set at the start of the injection step, and the computer 14 measures the variation t since the start of the injection step. x Detect the increase in clock t by

[0072] The measurement device 26 of the injection channel 24 measures the concentration of the injected material during the injection step, i.e. at a given time t x A measurement of the amount of injected product passing through the measuring device 26 during i (t∈[0;t x ]) is provided.

[0073] The amount of infusion product passing through the measuring device 26 during the infusion step is considered to be equal to the amount of infusion product simultaneously infused into the continuous stream of base product.

[0074] In particular, the injection product is not compressible under normal conditions of use. Additionally, there is no leakage of injection product between the metering device 26 and the mixing end.

[0075] The measurement provides the amount of infused product that has been infused into the continuous flow of base product.

[0076] The desired amount of base product is the amount of infusion product Q to be infused during a given time. i (t∈[0;t x ]) is used as the basis.

[0077] More specifically, the desired ratio of amounts between the base product and the infusion product, more specifically the base product to the infusion product, is pre-determined or programmed.

[0078] For example, the ratio of the desired amount of base product to infusion product, B:I, is 2 or greater.

[0079] In that case, the desired amount of base product Q B is the desired ratio B:I and the amount of infused product Q infused during a given time i (t∈[0;t x ]).

[0080] So, we write it as follows: [Mathematics 1] Q B =B:I×Q i (t∈[0;t x ])

[0081] The amount of base product measured by the measuring device 34 from the start of the injection step is Q B , the administration method is restarted at the beginning of the infusion step.

[0082] The amount of base product measured by the measuring device 34 will correspond to the amount of base product flowed in the continuous stream.

[0083] In particular, the base product is not compressible under normal conditions of use, and furthermore, there is no leakage of the base product between the measuring device 34 and the mixing end.

[0084] In one embodiment, the measurement of the amount of base product flowing through the measuring device 34 is carried out at regular intervals. As a result, the amount of base product measured by the measuring device 34 from the start of the injection step is equal to or greater than the amount of the latter actually Q B or if the first measured quantity is equal to Q B Greater than, i.e., the value Q B If it exceeds Q B is considered to be equal to

[0085] Thus, the administration method involves repeating the following steps: - At a given time t x injecting the injection product into the continuous flow of the base product while - At a given time t x measuring the amount of infusion product infused during - calculating the amount of base product desired according to the amount of injected product; and - Only run a continuous stream until the amount of base product run since the start of the iteration is equal to the amount of base product desired.

[0086] At the beginning of each iteration of the injection step, the injection valve 28 is opened for a given time t x In the embodiment shown, the clock of computer 14 is reset again with each iteration.

[0087] At a given time t x is the same for all iterations.

[0088] The infusion product is infused into the base product only during the infusion step.

[0089] This step is repeated continuously for as long as the user desires to mix the base product and the infused product.

[0090] Therefore, at each iteration, the amount of injected product Q i (t∈[0;t x ]) is the amount of base product Q flowing in a continuous stream B is injected into

[0091] Thus, with each iteration, a ratio between the base product and the infused product is obtained that is equal to the desired ratio B:I.

[0092] Furthermore, this method allows for precise dosing since the duration of the injection step is fixed and does not need to be adjusted with each repetition of the valve opening period. Second embodiment

[0093] Next, a second embodiment of the dosing equipment according to the present invention will be described with reference to FIG.

[0094] The dosing facility 110 here comprises at least two devices for mixing the respective infusion product and the respective base product, more specifically here two mixing devices 112, 212.

[0095] The dispensing equipment 110 further includes a computer 114 .

[0096] Each mixing device 112, 212 includes an infusion product inlet 115, 215, a base product inlet 117, 217, and an outlet 119, 219 for the mixture of infusion product and base product.

[0097] Each of the mixers 112, 212 is identical to the mixer described with respect to the first embodiment.

[0098] The first mixing device 112 is fed via an infusion product channel 124 and a base product channel 132 similar to those described with respect to the first embodiment.

[0099] More specifically, the injection channel 124 is provided with a device 126 for measuring the amount of injection product passing therethrough, an injection valve 128 downstream of the measuring device 126, and, in this example, a global injection valve 130 upstream of the measuring device 126.

[0100] The base channel 132 further comprises a device 134 for measuring the amount of base product passing therethrough, in this example comprising a global base valve 136 upstream of the measuring device 134 .

[0101] Here, the outlet 119 of the first mixer 112 is fluidly connected to the base product inlet 217 of the second mixer 212 .

[0102] More specifically, the intermediate channel 232 connects the outlet 119 of the first mixer 112 and the base product inlet 217 of the second mixer 212 .

[0103] The input product inlet 215 of the second mixing device 212 is fed by a second input channel 224 .

[0104] The second injection channel 224 here is similar to that described with respect to the first embodiment of the arrangement.

[0105] More specifically, the second injection channel 224 is provided with a device 226 for measuring the amount of injection product passing therethrough, an injection valve 228 downstream of the measuring device 226, and, in this example, a global injection valve 230 upstream of the measuring device 226.

[0106] All valves 128 , 130 , 136 , 228 , 230 of the dosing equipment, and more particularly their respective displacement between open and closed positions, are here controllable by the computer 114 .

[0107] All of the measuring devices 126 , 134 , 226 are capable of transmitting their respective measured quantities to the computer 114 .

[0108] Next, the administration method according to the second embodiment will be described with reference to FIG.

[0109] The dosing method according to this second embodiment is suitable to be carried out by the above-mentioned dosing device according to the second embodiment.

[0110] A dispensing apparatus 110 as described with respect to the second embodiment is provided.

[0111] The dosing facility 110 is here supplied with a base product, a first infusion product and a second infusion product.

[0112] More specifically, the first mixing device 112 is supplied with a base product at its base product inlet 117 and with a first infused product at its infused product inlet 115. The second device 212 is supplied with a second infused product at its infused product inlet 215.

[0113] Here, the administration method is performed via computer 114.

[0114] Here, the computer 114 includes two clocks t1, t2.

[0115] The global valves 130, 136, 230 are in their open positions.

[0116] The inlet valve 128, 228, for example, is initially in a closed position.

[0117] The dosing of the infusion of the first infusion product into the base product is carried out in a first mixing device 112 .

[0118] Hereinafter, the administration of the first infusion product to the base product will be referred to as the first administration.

[0119] The first administration is carried out according to the administration method described with respect to the first embodiment.

[0120] The first administration is performed by the computer 114, more specifically by using the first of the two clocks, t1.

[0121] Each iteration of infusing the base product with the first infused product occurs at a first given time t x1 It is executed between

[0122] Thus, an intermediate product mix consisting of the first infusion product and the base product leaves the first mixer 112 through outlet 119 .

[0123] The intermediate product mix provides a base inlet 217 of the second mixer 212 via an intermediate product channel 232 .

[0124] In parallel, the dosing of a second infusion product into the intermediate product mix is ​​carried out in a second mixer 212 .

[0125] The dose of the second infusion product in the intermediate product mixture is hereinafter referred to as the second dose.

[0126] A continuous flow of the intermediate product mix is ​​established, more specifically, at the baseline 218 of the second mixer 212 .

[0127] The second dispensing is performed according to the dispensing method described with respect to the first embodiment, considering the intermediate channel 232 as the base channel of the second mixing device 212 .

[0128] The second administration is performed by the computer 114, more specifically by using the second t2 of the two clocks.

[0129] Each iteration of infusing the base product with the product from the second infusion occurs at a given second time t x2 It is executed between

[0130] At a second given time t x2 is, for example, the first given time t x1 Alternatively, at a second given time t x2 is the first given time t x1 may be different from.

[0131] During a calculation step, at a given time Q i2 (t2∈[0;t x2 ]) a desired base amount is calculated based on the amount of first infused product infused during the first infusion.

[0132] More specifically, the desired ratio of amounts between the base product and the second infusion product, more specifically the base product to the second infusion product, is pre-determined or programmed.

[0133] For example, the ratio of the desired amount of base product to infusion product, B:I2, is 2 or greater.

[0134] In that case, the desired amount of base product Q B2 is the desired ratio B:I2 and the amount of second infusion product Q infused during a given time. i2 (t2∈[0;t x2 ]).

[0135] So, we write it as follows: [Mathematics 2] QB2 =B:I2×Q i2 (t2∈[0;t x2 ])

[0136] The amount of base product measured by the measuring device 134 from the start of the second injection step is Q B2 , the second administration method is started again at the start of the second infusion step.

[0137] These steps are repeated for as long as the user desires a given mixture of base product, first infused product, and second infused product.

[0138] Alternatively, the desired quantity ratio between the intermediate product mixture and the second infusion product is known. Then, during a calculation step, the desired quantity of the intermediate product mixture is calculated. Then, the second dosing method starts again at the start of the second infusion step when the sum of the amount of base product measured by the measuring device 134 and the amount of the first product measured by the measuring device 126 from the start of the second infusion step is equal to the calculated value.

[0139] The dosing of the first infused product occurs in a first mixing device 112 and the dosing of the second infused product occurs in a second mixing device 212 .

[0140] In each iteration of the step of injecting the first product, an amount Q of the first injected product is i1 (t1∈[0; t x1 ]) is the amount of base product Q that flows through the continuous flow of base product B1 is injected.

[0141] In each iteration of the step of injecting the second product, an amount Q of the second product is injected. i2 (t2∈[0;t x2 ]) is the amount of base product Q that flows through the continuous flow of the intermediate mixture. B2 is injected.

[0142] In an alternative embodiment not shown, the outlet 119 of the first mixing device 112 is fluidly connected to the inlet 215 of the second mixing device 112 by a channel, said channel then having an inlet valve, and the base inlet 217 is provided by a second base channel similar to the first base channel 124. The administration of the infusion of the intermediate product into the second base product is then similar to that previously described in the first embodiment, by considering the intermediate product mixture as the infusion product.

[0143] In the example shown opposite the second embodiment, two mixing devices are shown, however, it is understood that this can be generalized to equipment forms and related methods that obviously include more than two mixing devices.

[0144] The mixers are, for example, arranged in series one after the other in the direction of flow, the outlet of each mixer, except the last one, being connected to one of the inlets of the next mixer in the direction of flow.

[0145] The dosing equipment is capable of carrying out the dosing method as described above, taking into account the administration of successive infusions independently.

[0146] Such a dosing installation may, for example, be controlled by a single computer.

[0147] For each repetition of the infusion step of the administration method, a ratio between the base product and each infused product is obtained that is equal to the desired ratio.

[0148] Thus, each infusion product is metered as desired for the base product.

[0149] Furthermore, this method allows for precise dosing since the duration of the injection step is fixed and does not need to be adjusted with each repetition of the valve opening period. The present invention includes the following aspects. (1) A method of administering an infusion product to a base product, comprising the steps of: (a) the supply of equipment (12;112,212) for mixing injectable and base products; (b) setting up a continuous flow of base product in a mixing device (12; 112, 212), in which the amount of base product in the continuous flow is measured; (c) At a given time (t x ;t x1 ,t x2 ) injection of the infusion product into a continuous flow of the base product; (d) At a given time (t x ;t x1 ,t x2 The amount of injected product (Q i (t∈[0;t x ]);Q i1 (t 1 ∈[0;t x1 ]);Q i2 (t 2 ∈[0;t x2 ])) measurement, (e) The measured amount of injected product (Q i (t∈[0;t x ]);Q i1 (t 1 ∈[0;t x1 ]);Q i2 (t 2 ∈[0;t x2 ])) as a function of the amount of desired base product (Q B ;Q B1 ,Q B2 ) calculation; Including, Steps (c), (d) and (e) are performed to determine whether the measured amount of base product elapsed since the start of step (c) is equal to the desired amount of base product (Q B ; Q B1 ,Q B2 ), and Only during step (c) is the infusion product infused into the base product; method. (2) In step (e), the amount of the desired base product (Q B ; Q B1 ,Q B2 ) is the desired ratio of amounts between the base product and the infused product (B:I; B:I 1 ,B:I 2 ) The administration method described in (1). (3) The desired amount of base product (Q B ; Q B1 ,Q B2 ) is the desired ratio (B:I; B:I 1 ,B:I 2 ) and the amount of infused product injected at a given time (Q i (t∈[0;t x ]);Q i1 (t 1 ∈[0;t x1 ]);Q i2 (t 2 ∈[0;t x2 ]))) (2). (4) At a given time (t x ;t x1 ,t x2 ) is 0.01 seconds to 10 seconds. (5) A method of administration described in any one of (1) to (4), wherein the mixing device (12; 112, 212) is supplied with the injection product through an injection channel (24; 124, 224), the injection channel (24; 124, 224) is provided with an injection valve (28; 128, 228), and the injection valve (28; 128, 228) is movable between an open position and a closed position. (6) The method of administration described in (5), wherein the injection valve (28; 128, 228) can be controlled by a computer (14; 114). (7) The administration method according to (5) or (6), wherein the injection valve (28; 128, 228) is opened at the start of the injection step (c) and closed at the end of the injection step (c) after a given time. (8) An administration method according to any one of (5) to (7), in which the mixing device (12; 112, 212) is supplied with a base product by a base channel (24; 124), the injection channel is provided with a measuring device (26; 126, 226) for the amount of injection product passing through the measuring device (26; 126, 226), and the base channel (24; 124) is provided with a measuring device (34; 134) for measuring the amount of base product passing through the measuring device (34, 134). (9) A dosing installation (10; 110) for dosing an injection product into a base product, comprising at least one mixing device (12; 112, 212) of the injection product with the base product, the mixing device comprising an injection inlet (15; 115, 215), a base inlet (17; 117, 217) and an outlet (19; 119, 219) for the mixture of the injection product and the base product, capable of carrying out the dosing method according to any one of (1) to (8). (10) A dosing installation (110) capable of implementing the dosing method according to any one of (1) to (8), comprising at least two mixing devices (112, 212) for mixing a respective injection product and a respective base product, each mixing device (112, 212) comprising an injection product inlet (115, 215), a base product inlet (117, 217) and an outlet (119, 219) for a mixture of the injection product and the base product, the outlet (119) of a first device (112) of the at least two mixing devices being fluidly connected to the base product inlet (217) or the injection product inlet of a second device (212) of the at least two mixing devices.

Claims

1. 1. A method of administering an infusion product to a base product, comprising the steps of: (a) provision of a device (12; 112, 212) for mixing the infusion product and the base product; (b) setting up a continuous flow of base product in a mixing device (12; 112, 212), whereby the amount of base product in the continuous flow is measured, (c) At a given time (t ｘ ;t ｘ１ , t ｘ２ ) injection of the infusion product into a continuous flow of the base product; (d) At a given time (t ｘ ;t ｘ１ , t ｘ２ The amount of injected product (Q ｉ (t ∈ [0;t ｘ ]);Q ｉ１ (t １ ∈[0;t ｘ１ ]);Q ｉ２ (t ２ ∈[0;t ｘ２ ])) measurement, (e) The measured amount of infusion product injected (Q ｉ (t ∈ [0;t ｘ ]);Q ｉ１ (t １ ∈[0;t ｘ１ ]);Q ｉ２ (t ２ ∈[0;t ｘ２ ]) as a function of the amount of desired base product (Q Ｂ ;Q Ｂ１ , Q Ｂ２ ) calculation; Including, Steps (c), (d) and (e) are performed to determine whether the measured amount of base product elapsed since the start of step (c) is equal to the desired amount of base product (Q Ｂ ; Q Ｂ１ , Q Ｂ２ ), and Only during step (c) is the infusion product infused into the base product, said mixing device (12; 112, 212) being supplied with an injection product through an injection channel (24; 124, 224) comprising an injection valve (28; 128, 228), said injection valve (28; 128, 228) being movable between an open position and a closed position; said injection valve (28; 128, 228) is opened at the beginning of said injection step (c) and closed at the end of said injection step (c) after a given time, method.

2. In step (e), the amount of desired base product (Q Ｂ ; Q Ｂ１ , Q Ｂ２ ) is the desired ratio of amounts between the base product and the infused product (B:I; B:I １ , B:I ２ 2. The method of claim 1, wherein the dose is calculated from the formula:

3. The desired amount of base product (Q Ｂ ; Q Ｂ１ , Q Ｂ２ ) is the desired ratio (B:I; B:I １ , B:I ２ ) and the amount of infused product infused at a given time (Q ｉ (t ∈ [0;t ｘ ]);Q ｉ１ (t １ ∈[0;t ｘ１ ]);Q ｉ２ (t ２ ∈[0;t ｘ２ 3. The method of claim 2, wherein the .alpha.-amino acid is equal to the product of .alpha.-amino acid and .alpha.-amino acid.

4. At a given time (t ｘ ;t ｘ１ , t ｘ２ 4. The method according to claim 1, wherein the time t1 is 0.01 seconds to 10 seconds.

5. A method of administration according to any one of the preceding claims, wherein the injection valve (28; 128, 228) can be controlled by a computer (14; 114).

6. 6. The method according to claim 1, wherein the mixing device (12; 112, 212) is supplied with a base product by a base channel (32; 132), the infusion channel comprises a measuring device (26; 126, 226) for the amount of infusion product passing through said measuring device (26; 126, 226), and the base channel (32; 132) comprises a measuring device (34; 134) for measuring the amount of base product passing through said measuring device (34, 134).

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