RU221739U1 - WATER FILLING CHAMBER OF AQUAVENDING APPARATUS - Google Patents

Abstract

The utility model relates to aqua-vending devices that carry out the operations of preparing and automatically selling water, which the water buyer purchases through this device by placing his water container in its (the device’s) water filling chamber. The technical problem lies in the need to ensure, by simple means, laminar flow of water from the water filling pipe in order to simplify the centering of the container relative to the water filling pipe and to prevent splashing of water when it flows out of the water filling pipe. The technical result is that the desired laminar outflow of water from the water loading pipe is ensured by a significant reduction in the nominal diameter of the water flow in this pipe, due to the splitting (division) of a single input turbulent water flow into many tunnel water flows in this pipe, so that each such tunnel the flow has a significantly smaller nominal diameter relative to the nominal diameter of the specified single input (turbulent) flow. The water filling chamber of an aquavending apparatus is a box installed on the front panel of this apparatus, in the upper part of which there is a vertically oriented pipe 1 with a multitunnel nozzle 4 of constant cross-section installed in it in the area of its outlet for a turbulent-laminar transition. In this case, the multi-tunneling of the nozzle 4 is ensured by a volumetric plate structure installed inside it and secured in it by welding, consisting (in the optimal variant) of four longitudinally oriented plates 6-9, creating eight hydraulic tunnels 10. 2 s.p. inside the nozzle 4. f-ly, 5 ill.

Description

Field of technology to which the utility model relates

The utility model relates to aqua-vending devices that carry out the operations of preparing and automatically selling water, which the water buyer purchases through this device by placing his water container in its (the device’s) water filling chamber. State of the art

The water filling chamber of an aqua-vending apparatus is known, which is a box installed on the front panel of the aqua-vending apparatus, in the upper part of which there is a vertically oriented pipe for filling water into the container of the water buyer, a centralizer of this container relative to this pipe, as well as a damper with a control drive. In this case, the specified pipe is located in a recess specially designed for it in the upper wall of the chamber, closed by the specified valve with the possibility of temporarily opening this recess for pouring water into the container of the water buyer (see the description of the utility model according to patent RU No. 180571 U1, B67C 3/00, B67D 7/00, published: 06/18/2018 Bulletin No. 17, patent holder V.V. Bakaleyko).

The features of the known filling chamber, which are common to the features of the technical solution claimed for patenting, consist in the presence of the specified box and a vertically oriented pipe for pouring water into the container of the water buyer.

The reason that prevents the well-known loading chamber from obtaining a technical result, which is ensured by the technical solution claimed for patenting, is that in the known chamber the water filling pipe is located in a recess in the upper wall of the chamber, closed by a damper, which complicates the design of the chamber and makes visual perception impossible water consumer of this pipe, necessary for visual alignment of the neck of the buyer’s container relative to the filling pipe.

A known water filling chamber for an aqua-vending apparatus (prototype), which is a box installed on the front panel of an aqua-vending apparatus, in the upper part of which there is a vertically oriented pipe for pouring water into the container of the water buyer and a centralizer equipped with a light source, allowing the buyer of water to use this source carry out visual alignment of the neck of the specified container relative to the specified pipe (see the description of the invention under patent RU No. 2725515 C1, B67C 3/00, published: 07/02/2020 Bulletin No. 19, patent holder V.V. Vyatkin).

The features of the known filling chamber (prototype), common with the features of the claimed technical solution, are that the known chamber is a box installed on the front panel of the aqua-vending apparatus, in the upper part of which there is a vertically oriented pipe for pouring water into the water buyer’s container, temporarily located for this in this box.

The reason that prevents the known filling chamber (prototype) from obtaining the technical result that is provided by the technical solution claimed for patenting is that the specified visual centering of the container neck relative to the nozzle is carried out by the buyer of water using a special device (centralizer), equipped for this purpose with an appropriate source light, which complicates the design of the filling chamber and complicates the procedure for the water buyer to visually center the neck of the container relative to the nozzle in conditions of significant variability in the vertical dimensions of this container.

The technical problem to be solved by the patented technical solution is the need to simplify the design of the filling chamber by eliminating a special centralizer from its design, but in such a way that the desired function of visual centralization is not only preserved, but also significantly simplified for the buyer of water in conditions of significant variability in the vertical dimensions of its container (5-19 liters) and, accordingly, the distance between the water filling pipe and the neck of the container (provided that any container for filling it with water is installed at the bottom of the filling chamber, and is not suspended by the neck near the filling pipe , since such hanging is a bad option for the consumer due to the significant physical stress on him when removing the water-filled container from the specified suspension).

Thus, the technical problem lies in the need to ensure, by simple means, laminar flow of water from the water filling pipe, since:

1) relatively, with the help of laminar flow, it is easy to center the container of the water buyer relative to the water filling pipe at the distance of this container from this pipe,

2) it is the laminar flow of water from the water filling pipe that is characterized by the absence of splashing of this water on the sides, which eliminates the loss of part of the water on the way to the water buyer’s container, and also eliminates the unpleasant for the water buyer of this water getting on him (spraying in the event of its turbulent flow ).

At the same time, in accordance with the well-known Reynolds formula, laminar flow can be ensured by a significant reduction in the speed of water flow from the water filling pipe. However, this is completely unacceptable for the consumer in the process of aquavending, as it leads to a significant increase in the time it takes to fill his container with water. At the same time, practice shows that the psychologically acceptable time for a consumer to fill, for example, a 5-liter container, is 25 seconds, so if this time is exceeded, the likelihood of the consumer refusing the services of such “slow” aquavending increases.

Another option, also dictated by the Reynolds formula, is to reduce the nominal diameter of the water flow by reducing the internal diameter of the water filling pipe. However, in accordance with the law of continuity of flow, such a decrease in diameter leads to an increase in the speed of water movement in the flow, which negates the indicated reduction in the nominal diameter of the flow.

The third option (well-known and very popular) is to install a mesh at the outlet end of the pipe. In this case, the mesh partly solves the problem of laminarization of the flow, and also carries out aeration of the flow. But all this is achieved due to a significant increase in hydraulic resistance (this is a property of the mesh), which leads to a decrease in water consumption and the resulting increase in the time it takes to fill the buyer’s container with water is necessary, which is unacceptable for the reasons stated above.

Thus, the problem also lies in ensuring laminar flow of water from the water filling pipe without a noticeable decrease in water flow, which is only possible by reducing the nominal diameter of the water flow “bypassing” the law of continuity of this flow.

Disclosure of the essence of the utility model

The technical result that mediates the solution to this technical problem is that the desired laminar outflow of water from the water filling pipe is ensured by a significant reduction in the nominal diameter of the water flow in this pipe, caused by the splitting (division) of a single input turbulent water flow into many tunnel water flows in this branch pipe, so that each such tunnel flow has a significantly smaller nominal diameter relative to the nominal diameter of the specified single input (turbulent) flow. In this case, the speed of movement of each tunnel flow is approximately equal to the speed of movement of this input flow due to the specified splitting, which “cancels” the effect of the law of flow continuity, which makes it possible to reduce the conditional diameter of the flow without a noticeable increase or decrease in the flow speed.

Thus, thanks to the new design of the filling chamber, it acquires a new property, which is to ensure the effect of a turbulent-laminar transition due to the location of a special nozzle in the water filling pipe, which we called a multi-tunnel nozzle of constant cross-section for a turbulent-laminar transition. In this case, this effect of the turbulent-laminar transition in this nozzle is ensured by the specified splitting (separation) of a single input (turbulent) flow into many tunnel flows in this nozzle, which leads to a decrease in the Reynolds number in each tunnel flow to the level of laminar flow due to a corresponding decrease in the conditional diameter of the flow in each nozzle tunnel, after which these tunnel (laminar) flows at the exit from the nozzle are again combined into a single output and already laminar flow flowing out of the nozzle with the same nominal diameter and at the same speed as the specified input turbulent flow.

The technical result is achieved in that the water filling chamber of the aquavending apparatus, which is a box installed on the front panel of this apparatus, in the upper part of which a vertically oriented pipe for filling water into the container of the water buyer, temporarily located for this purpose in this box, is installed, additionally contains a multi-tunnel nozzle of permanent cross-section for a turbulent-laminar transition, installed in the specified nozzle in the area of its exit, which is a section of pipe inside which longitudinally oriented plates are installed, dividing the channel of this nozzle into many longitudinal hydraulic tunnels.

The technical result is also achieved by the fact that the specified multi-tunnel nozzle is made with an external thread, while the specified water filling pipe is made with an internal thread corresponding to the specified external thread, so that the specified nozzle is installed in the specified pipe by means of an appropriate threaded connection.

The technical result is also achieved by the fact that the specified multi-tunnel nozzle contains eight longitudinal hydraulic tunnels formed by four longitudinally oriented plates installed in the nozzle.

Brief description of drawings

In fig. 1 shows a schematic representation of the filling chamber of an aqua-vending apparatus with a water consumer container temporarily installed in it (the filling chamber is shown as a vertically elongated rectangle and is not marked with a position); in fig. Figure 2 shows a photograph of a prototype multitunnel nozzle of constant cross-section for a turbulent-laminar transition, namely, a side view and from its outlet end, i.e. the lower end of the nozzle in its working position; in fig. Figure 3 shows a photograph of the same nozzle, side view and from its inlet end, i.e. the upper end of the nozzle in its working position; in fig. 4 schematically shows a vertical (longitudinal) section of a group of longitudinal (i.e. oriented in the direction of the Z axis) nozzle plates dividing the nozzle channel into longitudinal tunnels, in orthogonal axes X-Z coordinates, where X is one of the horizontal (transverse to the nozzle) axes, Z - vertical (longitudinal for the nozzle) axis; in fig. 5 schematically from any end of the nozzle (inlet or outlet; or in the cross section of the nozzle) shows a group of longitudinal (i.e. oriented in the direction of the Z axis) nozzle plates dividing the nozzle channel into longitudinal tunnels, in orthogonal axes X-Y coordinates, where X - the same horizontal (transverse for the nozzle) axis, Y - another horizontal (different transverse for the nozzle) axis.

Implementation of a utility model

The water filling chamber of an aqua-vending machine is a box installed (fixed) on the front panel of the aqua-vending machine with the possibility of access for the water buyer inside this box, i.e. into the filling chamber (which in Fig. 1 is conventionally shown as a vertically elongated rectangle, and the front panel of the aquavending apparatus and the apparatus itself are not shown).

In this case, in the upper part of the water filling chamber there is a unit for filling water into the water buyer's container, which includes a vertically oriented pipe 1 (with a multi-tunnel nozzle 4 installed in it) for pouring water into the water buyer's container 2, which is temporarily installed for this purpose under the pipe 1 at a distance from it with the possibility of providing an appropriate vertical (and laminar) flow 3 of water from the pipe 1 into the container 2 through its neck.

Pipe 1 is a hollow vertically oriented round cylinder, i.e. a piece of round pipe with an internal thread (this thread is not shown and, accordingly, is not marked with a position). In this case, inside the pipe 1 with the help of this thread, a multi-tunnel nozzle 4 of constant cross-section for a turbulent-laminar transition is installed, and it is installed using a threaded connection due to the fact that this nozzle 4 is also made with a corresponding (matching) external thread 5 (Fig. 2, 3).

The specified multi-tunnel capacity of the nozzle 4 is ensured by a volumetric plate structure installed inside it and fixed in it by welding, consisting (in the optimal version) of four longitudinally oriented plates 6-9 (Fig. 2-5), creating eight longitudinal tunnels 10 inside the nozzle 4 ( Fig. 4, 5).

Considering the data of plates 6-9 in the rectangular coordinate system OX, OY, OZ (used in Fig. 2-5), it should be noted that all these plates are oriented with their planes parallel to the applicate axis OZ, which is also the axis of the nozzle 4. In addition, the plates 6-9 are connected to each other by welding and thereby form a single volumetric plate structure. In this case, one of them, namely plate 6, is located parallel to the coordinate plane ZOX (or conditionally in this plane itself, but in any case along the diameter of the nozzle 4), and the other plates 7-9 are located parallel to the coordinate plane YOZ, and these others are located at a distance from each other and from the inner walls of the nozzle 4 to form the indicated hydraulic tunnels 10, which precisely create the desired multitunnel of the nozzle 4.

Moreover, the meaning and purpose of this multitunnel is the ability to provide the desired turbulent-laminar transition with its help. The need for such a transition is due to the fact that the initial flow of water flowing through the corresponding pipeline and directed into container 2 from pipe 1 is turbulent by definition, both due to the flow rate determined by the permissible maximum time for filling container 2, and because for the tortuosity of the path of this flow. Such a turbulent flow, leaving pipe 1, tends to splash water on the sides, creating water losses and known inconvenience to the water consumer. Traditionally, this drawback is compensated for by bringing the neck of the container 2 as close as possible to the outlet end of the pipe 1, and in the extreme they even create the possibility of inserting the pipe 1 directly into the neck of the container 2, for this purpose suspending this container 2 by its neck. However, container 2 has a different vertical dimension, and there is such a large container that hanging it by the neck is technically difficult due to the weight of such a container filled with water. Thus, the best universal way to align the axis of the container neck 2 with the axis of the nozzle 1 is to ensure a stable laminar flow 3. But for this it is necessary to initially convert the turbulent flow into laminar i.e. to carry out the same turbulent-laminar transition, provided thereby by the multi-tunnel nozzle 4.

The possibility of a turbulent-laminar transition in the multitunnel nozzle 4 under consideration is due to the well-known hydraulic law expressed by the Reynolds formula: Where - average water flow speed, d - nominal flow diameter, - kinematic coefficient of water viscosity, Re - Reynolds number. Moreover, the critical Reynolds number for a round flow is widely known from experience so when laminar flow takes place, and at Re > Re _cr. - turbulent. It follows that for a turbulent-laminar transition in relation to a certain liquid (in our case, water), it is necessary to either reduce either decrease d or decrease both. However, in aquavending, the decrease is not possible, since this leads to an increase in the time it takes for the buyer to fill the water container with water, which usually causes psychological discomfort for the buyer. Thus, the desired turbulent-laminar transition is possible only due to a significant decrease in d. However, if this reduction in d is carried out by reducing the nominal diameter of the flow in pipe 1 then the acceptable effect of the turbulent-laminar transition will not be achieved, since in accordance with the law of flow continuity known in hydraulics, a decrease in d inevitably leads to a corresponding (relatively compensating) increase It is therefore necessary to reduce d so that there is no increase in This is only possible by creating a condition under which the law of continuity of flow does not apply. In other words, the initial water flow in pipe 1 with a nominal diameter must be split (divided) into several tunnel flows, the nominal diameter of each of which is significantly smaller than the nominal diameter This function is precisely performed by a multi-tunnel nozzle 4 of constant cross-section, in which the specified splitting (separation) of the initial flow into many tunnel flows of smaller nominal diameter is carried out by longitudinally oriented plates 6-9, excluding the effect of the law of flow continuity.

The filling chamber operates as follows.

The water buyer installs his container 2 in the filling chamber at the bottom of this chamber (or on a special stand, which is not shown in Fig. 1), bringing the neck of the container 2 under the pipe 1. In this case, the vertical dimension of the filling chamber is provided significant, and such that it gives the ability to install a container of the maximum possible size in this chamber, so that for such a container its neck will be located quite close to the outlet end of pipe 1 and for this reason, centering the neck of such a container relative to pipe 1 will not cause any difficulties. Under such circumstances, laminar flow 3 is not required. However, the buyer can also install small containers in the filling chamber, for example a 5-liter bottle made of transparent plastic (a very popular option due to the prevalence of such a bottle and the moderate weight of such a water bottle). In this case, the distance between the outlet end of the pipe 1 and the inlet end of the container neck 2 will be significant, as shown in Fig. 1, which makes relevant the question of the centering of the neck of the container 2 relative to the pipe 1. This question is resolved quite simply, for example, by applying a fairly bright spot with paint on the bottom of the chamber, located on the same conventional vertical line with the pipe 1 so that when virtually represented When water flows out of pipe 1 (i.e., in the absence of containers 2 in the filling chamber), flow 3 would fall exactly into the indicated spot and, at the same time, all the way from pipe 1 to the bottom of the filling chamber would represent a laminar flow. Then the buyer installs container 2 into the loading chamber with orientation along the specified laminar flow 3, based on the known spatial connection of pipe 1 with the specified spot. Another option for centering is to place a light source inside the pipe 1, the beam of which exits the pipe 1 vertically downwards and the buyer installs the container 2, orienting it along the specified beam associated with the laminar flow 3.

Further, when the water flow supply pump is turned on through the corresponding pipeline into pipe 1, this water flow, being turbulent, passes through a multi-tunnel nozzle 4 installed in pipe 1, in which, thanks to the presence of plates 6-9, this initial turbulent flow is split into many (specifically, eight) tunnel flows, each of which has a nominal diameter approximately eight times smaller relative to the nominal diameter of the original turbulent flow. This, as it turned out in experiments with the nozzle shown in Fig. 2, 3, turns out to be sufficient to transform the initial turbulent flow into the output laminar flow 3 (Fig. 1), which maintains this laminarity throughout the entire vertical path of its free vertical outflow, amounting to at least 600 mm, with an internal nozzle diameter of 14 mm and nozzle length 20 mm.

Claims (3)

1. The water filling chamber of an aquavending apparatus, which is a box installed on the front panel of this apparatus, in the upper part of which a vertically oriented pipe (1) is installed for pouring water into the container (2) of the water buyer, temporarily located for this purpose in this box, characterized in that that it contains a multi-tunnel nozzle (4) of constant cross-section for a turbulent-laminar transition, installed in the specified nozzle (1) in the area of its exit, which is a pipe section, inside which longitudinally oriented plates are installed, dividing the channel of this nozzle (4) into many longitudinal hydraulic tunnels (10). 2. The filling chamber according to claim 1, characterized in that the specified multi-tunnel nozzle (4) is made with an external thread (5), while the specified water filling pipe (1) is made with an internal thread corresponding to the specified external thread (5), so that said nozzle (4) is installed in said pipe (1) by means of an appropriate threaded connection. 3. Loading chamber according to claim 2, in which said multi-tunnel nozzle contains eight longitudinal hydraulic tunnels (10) formed by four longitudinally oriented plates (6-9) installed in the nozzle (4).