Fluid Cooling Filter Device
Patent Information
- Application Number
- JP2024543860
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-02-09
- Filing Date
- 2023-02-08
- Publication Date
- 2026-01-26
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[Technical field]
[0001] (Related Applications) This application is related to and claims priority from German patent application No. 10 2022 103 070.9, filed on February 9, 2022, the disclosure content of which is hereby expressly incorporated in its entirety into this application.
[0002] FIELD OF THEINVENTION The invention relates to a fluid-cooled filter device for machines processing plastics and other plasticizable materials (fluid-cooling-filter-device) according to the preamble of claim 1, to a method for filtering and cooling a fluid for machines processing plasticizable materials according to the preamble of claim 12 and to a machine, in particular an injection molding machine, processing plastics and other plasticizable materials according to the preamble of claim 19. [Background technology]
[0003] (Prior Art) To produce precision molded parts, for example made of plastics, machines for processing plastics and other plasticizable materials, in particular injection molding machines, are used, which usually have several components, such as injection units, clamping units or other hydraulic components, which must be cooled and / or lubricated with a certain fluid. The fluid should not exceed a certain temperature, because otherwise the cooling effect of the fluid on the corresponding components or (fluid)-using devices would be insufficient and these components could be damaged, which would have a negative effect on the production process of the molded parts. The fluid should also have a certain purity so that the components to be cooled and / or their fluid circuits are not clogged with impure or dirty fluid, which would likewise result in insufficient cooling or component failure.
[0004] For cooling and filtering fluids, for example oil, classical concepts such as return flow filtration are known in the prior art, in which the fluid flowing back from the application is returned to the tank via a filter-cooler section. The low cost of return flow filtration is an advantage, but the disadvantage is that the components in the filter-cooler line must be designed for high peak loads.
[0005] Alternatively, side-flow filtration can be mentioned, in which the fluid of the use device is returned to the tank and, using an additional pump, a continuous volume flow is taken from the tank and returned to the tank via the filter-cooler section. Due to the continuous feed rate, it is advantageous to be able to design the components in the filter-cooler line more compactly. However, it is disadvantageous that the contaminated and aerated fluid in the tank mixes with the already filtered and cooled fluid, which reduces the efficiency due to the mixing.
[0006] For example, DE 42 03 062 C1 discloses a hydraulic system with a main and a side-stream circuit, which consists of a liquid container with an intermediate wall for limited shielding of the liquid flow from the liquid container and the liquid flow reaching the liquid container, and with a side-stream filtering mechanism. The conveying line to the side-stream filter pump in the liquid container is arranged next to the leakage liquid line opening into the liquid container, with this area being partially shielded by the remaining liquid container. In this solution, it is disadvantageous that the returning fluid mixes with the already filtered and cooled fluid. Although the liquid container is indeed partially shielded, due to the arrangement of the components, a clean (complete) separation of the return flow and the suction area is not achieved. Due to the lack of a fluid line with a calming zone, stratification problems therefore occur in the liquid container. It is also disadvantageous in this solution that the cooled and filtered fluid is immediately sucked in again, so that the fluid does not have time to "calm down" and to degas any dissolved air via the calming section.
[0007] EP 2 840 239 B1 discloses a fluid-cooled filter arrangement with an adjustable pump motor, the rotational speed of which can be controlled depending on the load state of a fluid-powered machine, where a sensor arrangement measures the fluid pressure and the fluid temperature and a calculation unit determines the load state from the measured values.
[0008] DE 39 31 699 A1 discloses a method for cold starting a mobile working machine with a combustion machine. The required viscosity of the oil for the working machine is allegedly maintained through oil preheating. With the diesel engine, a supply circuit pump is driven, which draws hydraulic oil from the dirty side of the hydraulic tank. The hydraulic oil reaches an oil filter via a five-way valve and from there to the clean side of the hydraulic tank. From the clean side of the hydraulic tank, the hydraulic oil is returned via a return line to the dirty side of the hydraulic tank with the aid of a pump driven by the diesel engine. Here too, it is disadvantageous that the fluid is immediately drawn back in again, so that it does not have time to "settle down" and outgas. The tank is under prepressure and the clean and dirty sides are connected via an overpressure valve, so that the oil is not provided with a settling section due to permanent overpressure.
[0009] DE 101 51 058 A1 discloses a liquid circuit with a liquid storage tank, a liquid pump and a liquid filter, which is under pre-pressure in its supply line after the liquid pump and unpressurized in the return line, and the liquid filter is arranged in the unpressurized return line of the liquid circuit as a main flow filter. [Prior art documents] [Patent documents]
[0010] [Patent Document 1] German Patent No. 4203062 [Patent Document 2] European Patent No. 2840239 [Patent Document 3] DE 3931699 [Patent Document 4] DE 10151058 Summary of the Invention [Problem to be solved by the invention]
[0011] (Summary of the invention) Starting from this prior art, the object on which the present invention is based is to enable an advantageously efficient and reliable cooling function for machines for processing plastics and plasticizable materials, in particular injection molding machines. [Means for solving the problem]
[0012] The problem is solved by a fluid-cooled filter (fluid-cooling-filter) device for machines processing plastics and plasticizable materials having the features of claim 1, by a method for filtering and cooling a fluid for machines processing plasticizable materials, in particular injection molding machines, having the features of claim 12 and by a machine processing plasticizable materials, in particular an injection molding machine, having the features of claim 19.
[0013] Advantageous further configurations are the subject of the dependent patent claims. The features recited individually in the patent claims can be combined with one another in a technically meaningful manner and can be supplemented by what is described in the present specification and by details from the drawings, which show further implementation variations of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] Hereinafter, a mode for carrying out the invention will be described.
[0015] A fluid-cooled filter arrangement for machines processing plastics and plasticizable materials, in particular injection molding machines, has a first pump, for example a variable pump with a predefinable delivery volume (variable displacement pump), which is configured to pump at least one fluid, for example oil, from a first container, for example a tank, an oil tank, into a circuit, for example a working circuit. The circuit supplies the fluid to at least one (fluid) user, for example a machine processing plastics and plasticizable materials, in particular an injection molding machine. The user is cooled and / or lubricated with the fluid. The fluid is also available for energy transfer, since for example the user is also moved with the fluid. In principle, the circuit can have various user devices, in particular an injection molding machine, parts or components of an injection molding machine, for example a clamping unit, an injection molding unit, as well as corresponding peripherals, for example a robot, etc.
[0016] The fluid-cooled filter arrangement further comprises a second pump, for example a variable pump with a pre-determinable delivery volume, which is arranged to pump the fluid into the first container through at least one cooling device and / or filter device. Advantageously, in order to enable an efficient and reliable cooling function, at least one second container, for example a tank, an oil tank, which is separate from the first container, is provided, which collects the fluid from the circuit and pumps it from the second container into the first container through the cooling device and / or filter device. In this context, "separated" means that the containers and / or their contents are entirely and completely separated from one another, so that the fluids do not flow from one container into the other and do not mix. For example, the containers can be arranged spatially separated from one another, i.e. advantageously, the contents of the containers do not mix with one another even if one of the containers overflows. The containers can also be arranged next to one another, as long as the contents of the containers do not mix with one another.
[0017] The "used" and / or warm fluid from the circuit is first collected in a second container, in which dirt (foreign matter) from the circuit and the use device that has been received by the fluid is collected. The fluid is then pumped using a second pump through a cooling device and / or a filter device into the first container. The use of a second pump advantageously prevents dirt from being sucked back in by the first pump and fed into the circuit, which could cause damage to the use device and / or components.
[0018] Furthermore, advantageously, a second container separate from the first container allows the dirt to be extracted (removed) using appropriate measures before the fluid is fed to the cooling device and / or the filter device, which advantageously results in more efficient cooling and filtering of the cooling device and / or the filter device, since the dirt is less likely to clog the cooling device and / or the filter device. Initially coarse dirt particles can be bound (adsorbed) for example via magnets, which prevents these contaminants from reaching the circuit. Furthermore, advantageously, the second container is used to centrally collect heated fluid in the return line of the pump, for example "hot" leaking oil. Due to the relatively high temperature difference between the fluid in the return line and the cooling medium of the cooling device and / or the filter device, a higher cooling capacity can be achieved, which increases the efficiency.
[0019] The fluid absorbs air over time in the circuit. Furthermore, advantageously, the fluid has time in the second container to eliminate (separate, release) the air absorbed in the fluid again. As a result of the dirt being collected in the second container, the first pump is supplied with substantially only clean, cooled and degassed fluid, which has a positive effect on the service life and efficiency of the first pump. Furthermore, advantageously, the first container can be dimensioned relatively small, since the second container provides an overall relatively large volume for receiving the fluid. Furthermore, advantageously, due to the separation of the containers, the overall fluid space can be reduced, since due to the geometrical arrangement of the containers no longer mixed temperatures arise and, due to the inflow of the cooled and filtered fluid as far away as possible from the first pump, the fluid has sufficient time to degas, even in an advantageously small volume, so that cavitation in the suction line of the first pump is prevented. This allows the total vessel volume (in both vessels) to be advantageously reduced by approximately 20% compared to a non-separated conventional configuration.
[0020] The separation of the containers is preferably effected in such a way that the containers are arranged spatially spaced apart from one another, but it is also possible for the containers to be arranged next to one another and / or received within one other container and separated from one another by a separator.
[0021] However, the first and / or second container can also, for example, each have a volume that at least corresponds to the total fluid volume used, so that at least one of the containers can advantageously receive the entire volume. This is advantageous, for example, if the fluid is completely exchanged once, since then only one container needs to be emptied. In principle, however, other volumes of the containers are also conceivable, for example smaller volumes, since the entire fluid volume is usually not in a single container, but is distributed over the containers, the circuit and the application device.
[0022] In order to advantageously prevent the first and / or second container from overflowing, at least the second pump can be controlled depending on the fluid (fluid volume) withdrawn from the circuit into the second container and / or depending on the filling level of the fluid in the first container. If, for example, more fluid is withdrawn from the circuit by the second container than the second pump can pump into the first container, the second pump can be controlled accordingly. For example, the pump power can be increased. Also, for example, if the first container is configured with a small volume, so that the filling level is "too high", the second pump can likewise be controlled so that the first container does not overflow, thereby advantageously preventing contamination and saving fluid. Furthermore, likewise, if, for example, the filling level in the first container decreases, the second pump can likewise be controlled accordingly, for example by reducing the pump power. It is also possible, for example, for a sensor to detect the filling level in the first and / or second container and the pump power of the first and / or second pump can be controlled accordingly. It is also conceivable that the first and / or second pumps are controlled depending on the work step or cycle section of the machine. For example, they can be controlled correspondingly also during standstill states of the machine, when less fluid is needed, for example by the pump power being reduced or the pump being switched off in order to save energy. Furthermore, advantageously, the (variable) controllability of the pumps also creates the constructional assumption that the fluid can remain in the container, for example the first and / or second container, for a relatively long time and thus has more time for outgassing.
[0023] Preferably, the second container and the first container are arranged in series in terms of fluid technology. In this context, fluid technology means that the arrangement of the containers can be compared, for example, to an electrical circuit connected in series. For example, a fluid is collected from a circuit, for example a working circuit, into the second container, pumped from the second container into the first container by a second pump, and then the first pump pumps the fluid into the circuit. Thus, advantageously, dirt in the fluid is first collected in the second container before the fluid is pumped into the first container. The series connection in this case can be, for example, circuit (outlet)-second container-second pump-cooling device and / or filter device-first container-first pump-circuit (inlet).
[0024] It is also possible for the first pump to pump the fluid into the circuit via at least one further cooling and / or filtering device, which advantageously results in an improved cooling capacity for the application device, since the fluid is filtered and / or cooled again. The series connection in this case can be, for example, as follows: circuit (outlet) - second container - second pump - cooling device and / or filtering device - first container - first pump - further cooling device and / or filtering device - circuit (inlet).
[0025] Likewise, the further cooling and / or filtering device can be arranged such that the fluid is first withdrawn from the circuit via the further cooling and / or filtering device by the second vessel, for example in the following series connection: circuit (outlet)-further cooling and / or filtering device-second vessel-second pump-cooling and / or filtering device-first vessel-first pump-circuit (inlet).
[0026] Further cooling devices and / or filter devices can also be combined with one another, for example in a series connection as follows: circuit (outlet)-further cooling device and / or filter device-second container-second pump-cooling device and / or filter device-first container-first pump-further cooling device and / or filter device-circuit (inlet).
[0027] More preferably, at least the second pump may be (variably) controllable depending at least on the fluid (fluid volume) withdrawn from the circuit into the second container and / or depending on the filling level of the fluid in the first container and / or the second container. More preferably, the first pump may be controllable depending on the use device and / or depending on the fluid demand required in the circuit. Optionally, the first pump and / or the second pump may also be controlled depending on the delivery volume of the first pump and / or the second pump and / or depending on the filling level of the first container and / or the second container. For example, when the production of the use device cooled by the fluid and the production of the corresponding machine is increased, the use device may require more fluid from the circuit in a shorter time. In order to provide that demand, the first pump can be controlled accordingly. Correspondingly, the second pump must then also be controlled, because otherwise the first pump will no longer be able to pump fluid after a certain time, because not enough fluid will be pumped into the first container by the second pump.
[0028] For an advantageously space-saving arrangement, the first and / or second container is preferably arranged in a machine stand, for example a machine stand for a machine for processing plasticizable materials, in particular an injection molding machine. It is also possible, for example, for the machine stand to already have a suitable container. The first and second containers can be arranged next to each other or spatially separated from each other.
[0029] Advantageously, for a particularly space-saving and integrated construction, the first and second containers are parts of a third container and are separated from each other by at least one separator. For example, the third container can be provided for recovering a fluid from the circuit. The fluid is recovered at a predetermined location in the third container. The third container can be divided into two containers, or into a first container and a second container, by a separator, for example a partition, a metal plate wall. For example, a machine stand can function as the third container, with the first container and the second container being separated from each other by a partition. It is also possible for the third container to have the first container and the second container. The first container and the second container can be integral components of the third container, for example, the third container can be manufactured from at least one part, with the third container having at least one separator dividing the third container into the first container and the second container.
[0030] To advantageously prevent the first and / or second container from overflowing and thus pumping "contaminated" fluid into the circuit, the first and / or second container may preferably be configured such that their size prevents overflow of said containers, e.g. the first and / or second container may have at least the full volume of the fluid to be used.
[0031] The fluid used may change qualitatively over time. Preferably, the first container and / or the second container comprises at least one fluid sensor, e.g. a particle sensor, a fluid condition sensor or an oil condition sensor, in order to advantageously indicate a service (maintenance) recommendation in the event of a deterioration in the quality of the fluid. Thus, advantageously, important parameters of the fluid properties can be monitored. Furthermore, the fluid sensor can detect, for example, the fluid fill level in the container.
[0032] Preferably, the output of the first pump and / or the second pump is sized depending on the first and / or second container: for example, if a lot of fluid is pumped by the second pump from the second container to the first container and / or if not much fluid flows from the circuit into the second container, the second container can be made correspondingly smaller.
[0033] Advantageously, in order to obtain an automated control, the second pump is preferably open-loop and / or closed-loop controllable depending on at least one pump adjustment variable (pump operation variable). The pump adjustment variable can be set, for example, the pump output as well as pump-specific variables such as flow rate, opening setting, operating mode, etc. For example, the pump adjustment variable can be determined based on sensor data and the pump can be open-loop and / or closed-loop controlled accordingly.
[0034] Preferably, the pump adjustments are selected so that neither the first nor the second container is overfilled or underfilled. For example, when the fluid fill level in the containers and / or the fluid volume pumped is detected, the pump size can be selected accordingly so that neither container is overfilled, which likewise prevents contamination with fluid or wasteful consumption of fluid. Similarly, if for example the first pump needs to provide more fluid to the circuit, the second pump can be correspondingly controlled in a closed loop so that no underfill occurs in the first container. Preferably, the pump control device knows the resulting fluid volume and the current fluid fill level of the containers (e.g. how much flows back from the use device into the second container depending on the cycle progress and how much fluid demand the first pump provides into the circuit), so that the control device can control the output of the second pump accordingly with the current conditions.
[0035] More preferably, the pump adjustment amount depends on at least one of the following fluid volumes per time unit: the fluid volume flowing back from the circuit into the second container; the fluid volume pumped from the second container into the first container; the fluid volume pumped from the first container into the circuit. For example, by means of a suitable sensor, it is possible to select the pump adjustment amount as a function of the volume per time unit collected by the container and / or as a function of the fluid filling level. If, for example, the filling level in the first container is high and less fluid is collected from the circuit in the second container, for example the pump adjustment amount is open-loop and / or closed-loop controlled such that less fluid is pumped from the second container into the first container.
[0036] Preferably, the entry of the fluid into the first and / or second container takes place as far away as possible from the first and / or second pump, so that the fluid advantageously has time to eliminate the absorbed air and to degas. As far away as possible can be understood as meaning that the fluid must travel as long as possible between the point of entry into the container and the point of suction of the corresponding pump so that the fluid has enough time to degas. It is possible to increase the distance for the fluid between the point of entry of the fluid and the point of suction of the fluid by the pump, for example by making the container larger. It is also preferable that the pump can be controlled in order to appropriately control the flow rate. For example, if the pump power is reduced, the fluid will remain in the container longer and will thus have more time to degas. The structural prerequisites for this are provided by the controllable pump.
[0037] Preferably, the first and / or second vessel has at least one settling zone (fluid retention stabilizer zone). The settling zone may further preferably have at least one obstacle, e.g. a wall, forcing the fluid to flow through a predefined section, thereby advantageously giving the fluid time to eliminate absorbed air and outgas. For example, a vertical output metal plate may be provided as an obstacle, whereby the fluid is forced to rise at one metal plate and fall at the other metal plate, which preferably promotes outgassing via air bubbles.
[0038] More preferably, at least one settling zone is provided between the entry of the fluid into the first and / or second container and the first and / or second pump, where the fluid outgasses. If the fluid enters, for example, the first and / or second container, a settling zone can be provided in the first and / or second container between the entry of the fluid and the suction of the fluid with the first and / or second pump. For example, in the container, obstacles (or guides), for example walls, can be inserted, which guide the fluid and form a section as a settling zone, thereby forcing the fluid to flow through as large a section as possible. Advantageously, this means that the fluid has more time to eliminate the absorbed air and outgas. It is also possible, for example, that the fluid has to travel through a meandering section, for example a meander-shaped section, in the container. For example, one obstacle, for example a metal plate, can be fixed at the bottom and one other obstacle, for example a transverse metal plate, can be fixed at the height of the upper fluid level. The fluid is thereby forced in a meandering manner, for example to rise at the lower metal plate and to flow downward at the upper metal plate, the vertical surface of the obstacle advantageously additionally promoting outgassing, since the gas bubbles emerge at the wall of the metal plate and rise upwards. The calming zone is preferably in contact with the surroundings, so that sufficient exchange with the surroundings is ensured and the fluid can outgas.
[0039] The object is further achieved by a method for filtering and cooling a fluid for machines for processing plastics and plasticizable materials, in particular injection molding machines, in which at least one fluid is pumped from a first container into a circuit, the fluid being pumped into the first container via a cooling section and / or a filter section. The fluid is collected from the circuit into a second container, which is separate from the first container, and is pumped from the second container into the first container via the cooling section and / or the filter section. Advantageously, all dirt from the circuit and the (fluid) user is collected in the second container, the separation of the containers preventing the dirt from being sucked back in by the first pump. Before the fluid is fed into the cooling section and / or the filter section, it is possible to extract the dirt from the second container via suitable measures. This advantageously results in a higher efficiency and a longer service life of the cooling section and / or the filter section.
[0040] Further advantageously, the second container can also be used to centrally collect heated fluid in the return line of the pump, e.g. "hot" leakage oil, whereby a higher cooling capacity and efficiency can be achieved due to the relatively high temperature difference between the return line fluid, e.g. return line oil, and the cooling medium.
[0041] The fluid absorbs air over time in the circuit, and more advantageously the fluid has time in the second container to eliminate again the air absorbed in the fluid, so that the dirt is collected in the second container, and the first pump is supplied with substantially only clean, cooled and degassed fluid, which has a positive effect on the life and efficiency of the first pump.
[0042] The pumping of the fluid from the second container into the first container is controlled depending on the fluid withdrawn from the circuit in the second container (fluid volume), the fluid fill level in the first container and / or the second container, and / or the fluid pumped into the circuit from the first container (fluid volume). This advantageously allows to react to very different changes in the fluid circuit, for example in the case of an increased consumption in the circuit, more fluid can be provided in the first container, assuming that sufficient fluid is available in the second container. Furthermore, advantageously, due to the controllability of the pump, the assumption is made that the fluid can remain in the container relatively long and thus have more time for outgassing. For example, the flow rate of the pump can be controlled in such a way that the fluid remains in the container relatively long and thus have more time for outgassing.
[0043] Preferably, the second container and the first container are connected in series in a fluidic manner. In this context, fluidic means that the arrangement of the containers can be compared, for example, to an electrical circuit connected in series. For example, the fluid is collected from the circuit into the second container, pumped from the second container into the first container by the second pump, and then the first pump pumps the fluid into the circuit. Thus, advantageously, the dirt in the fluid is first collected in the second container before the fluid is pumped into the first container. For example, via a magnet, the first coarse dirt particles can be bound (adsorbed) before the fluid is pumped into the first container, which prevents these contaminants from reaching the circuit. It is important that the "contaminated" fluid is guided through at least one filter section before it is pumped into the circuit, for example into the working circuit, by the first pump. In the circuit, for example, regulating components can be provided that are sensitive to even the smallest contaminants. The filtering thereby serves both to improve the service life of the first pump and to protect sensitive regulating components. The series connection can be configured, for example, as follows: circuit (outlet) - second vessel - second pump - cooling device and / or filter device - first vessel - first pump - circuit (inlet).
[0044] Advantageously, at least as much fluid is pumped from the second container into the first container as reaches the second container from the circuit, in order to prevent contamination and unnecessary consumption of fluid. For example, at every operating point, on average, more fluid is taken out of the second container than flows back into the second container from the circuit. In this way, advantageously, a uniform flow of fluid is ensured, whereby a continuous cooling effect is achieved. It is thus further advantageously ensured that the second container does not overflow, thereby preventing contamination and / or unnecessary consumption of fluid.
[0045] Preferably, the second pump is controlled such that it pumps at least as much fluid from the second container into the first container as fluid from the circuit reaches into the second container, for example the volumes of the containers, and in particular the volume of the first container, can be smaller the more even the fluid transfer from the second container into the first container, and the total fluid demand can be reduced, which can advantageously save resources.
[0046] Preferably, the pumping of the fluid from the second container into the first container is controlled depending on at least one pump adjustment amount (pump operation amount), which can be derived from a number of data and / or information, for example from a number of sensors, for example the pump adjustment amount can be derived from the fill level of the container, the flow rate of the pump and the material of the fluid.
[0047] Advantageously, to prevent contamination from overflowing fluid, the pump adjustment is preferably selected so that fluid does not flow from the first container into the second container, for example if the containers are not separated but merely located close together, or if the containers are not separated but merely separated by a wall, it may happen that "contaminated" fluid from the second container flows into the first container without being cooled or filtered.
[0048] Preferably, the fluid in the first and / or second container is forced into at least one section of at least one calming zone. Advantageously, the fluid remains in the first and / or second container for a relatively long time, thereby having more time for outgassing (degassing).
[0049] More preferably, for advantageously increased efficiency, the fluid remains in the first and / or second container at least until the air absorbed in the fluid is expelled (degassed). The fluid is given a certain time in the first and / or second container to expel the air absorbed in the fluid over time. For example, via control of the first and / or second pump, for example by reducing the pump power, the fluid remains in the container for a relatively long time. It is also possible that the flow rate of the fluid is changed and / or the distance traveled by the fluid from the point of entry of the fluid into the first and / or second container to the first and / or second pump is preferably increased.
[0050] The problem is further solved by a machine for processing plastics and other plasticizable materials, in particular an injection molding machine, which comprises at least one fluid-cooled filter device as described above and / or is configured and / or arranged and / or installed to perform at least the method as described above.
[0051] Further advantages are evident from the subclaims and from the following description of preferred embodiments. The features recited individually in the claims can be combined with one another in a technically meaningful manner and can be supplemented by the contents described in the specification and by details from the drawings, which show further implementation variations of the invention.
[0052] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. [Brief description of the drawings]
[0053] [Figure 1]FIG. 1 illustrates one cooling filter arrangement. [Diagram 2] FIG. 1 illustrates a schematic isometric view of one cooling filter arrangement. [Diagram 3] FIG. 1 illustrates a schematic isometric view of one cooling filter arrangement. [Figure 4] FIG. 1 illustrates a schematic isometric view of one cooling filter arrangement. [Diagram 5] FIG. 1 illustrates a schematic isometric view of one cooling filter arrangement. [Figure 6] FIG. 1 shows a schematic isometric view of one cooling filter arrangement with fluid flow charted. [Figure 7] FIG. 1 shows a (fluid-technical) schematic diagram of one cooling filter arrangement. [Figure 8] 8a to 8d each show a schematic diagram of a one-container device. [Figure 9] FIG. 1 shows a cooling filter arrangement with a calming zone. [Figure 10] FIG. 1 shows a cooling filter arrangement with a calming zone. EXAMPLES
[0054] Description of the Preferred Embodiments The present invention will now be described in detail by way of examples with reference to the accompanying drawings, in which: FIG.
[0055] Before describing the present invention in detail, it should be noted that the present invention is not limited to each component of the apparatus and each method step of the method, because these components and methods can be varied. Furthermore, the concepts or terms used herein are defined only to describe specific embodiments and are not used as limitations. In addition, when the singular or indefinite article is used in the present specification or claims, the elements may be plural unless the overall context clearly indicates otherwise (correspondingly, the singular also represents the plural in Japanese translations).
[0056] In FIG. 1, as an embodiment, a cooling and filtering device (fluid-cooling-filtering device) 10 for machines for processing plastics and other plasticizable materials, in particular injection molding machines, is shown, which comprises a first pump 12 arranged to pump at least one fluid from a first container 14 into a circuit 24 (see FIG. 7) and a second pump 16 arranged to pump the fluid through at least one cooling device 19 and / or filter device 21 into the first container 14. The first container 14 and the second container 18 are completely separated from each other in FIG. 1 by a separator 26, for example a wall. The fluid is pumped by the second pump 16 from the second container 18 through the cooling device 19 and / or filter device 21 into the first container 14. In a further embodiment, the first container 14 and the second container 18 may be at least part of a third container 28 (see FIG. 7), as also diagrammatically illustrated in FIG. 2. It is furthermore possible that the first pump 12, the second pump 16 and the cooling device 19 and / or the filter device 21 are arranged in a third container 28, which itself is arranged, for example, in a machine stand 22. In Fig. 1 the fluid is collected from the circuit 24 via a hose 30 into the second container 18. The fluid flows, for example along the arrow 32, in the second container 18 towards or is sucked in by the second pump 16. The second pump 16 pumps the fluid through the cooling device 19 and / or the filter device 21 into the first container 14, from which the fluid is pumped by the first pump 12 into the circuit 24.
[0057] 2 to 6 show a further embodiment of the cooling filter arrangement 10, each shown as a schematic isometric view from different perspectives, with a portion of the wall of the machine stand 22 cut away in each of FIGS. 4 and 5 for clarity. In FIG. 6 the fluid flow is indicated by means of arrows 32. In the embodiment according to FIG. 6 the fluid first comes from the circuit 24 (see FIG. 7) via a hose 30 into the second container 18. From the second container 18 the fluid is pumped by means of the second pump 16 first via the filter arrangement 21 and via the cooling arrangement 19 into the first container 14. From the first container 14 the fluid is pumped by means of the first pump 12 into the circuit 24.
[0058] 7 shows a further embodiment as well as a (fluid-technical) schematic diagram of the cooling and filtering arrangement 10. The first container 14 and the second container 18 are arranged in series in the fluid-technical sense. Fluid is firstly withdrawn from the circuit 24 by the second container 18 and then pumped using the second pump 16 through the cooling device 19 and / or the filter device 21 into the first container 14, from which it is pumped using the first pump 12 into the circuit 24.
[0059] 1, at least the second pump 16 is controllable at least depending on the fluid (fluid volume) withdrawn from the circuit 24 in the second container 18 and / or depending on the filling level of the fluid in the first container 14. This can be done, for example, via a control device and / or a machine control device (not shown).
[0060] For an advantageous space-saving embodiment, in a further example according to FIG. 1, the first container 14 and / or the second container 18 are arranged in a machine stand 22, for example in the machine stand of a machine for processing plasticizable materials, in particular an injection molding machine.
[0061] In a further embodiment according to Fig. 7, the first container 14 and the second container 18 are part of a third container 28 and are separated from each other by at least one separator 26. The third container 28 can be arranged in the machine stand 22 or represent a part of the machine stand 22 in a further preferred embodiment according to Fig. 1. In Fig. 1, the machine stand 22 constitutes, so to speak, the third container 28, whereas the separator 26, for example a wall, divides the third container into the first container 14 and the second container 18. However, it is also possible that the machine stand 22 comprises the first container 14 and the second container 18 or is configured correspondingly thereto.
[0062] In order to advantageously enable monitoring of the fluid with regard to better quality, in a further embodiment according to FIG. 7, the first container 14 and / or the second container 18 comprise at least one fluid sensor 34 .
[0063] In a further embodiment according to Fig. 1, at least the second pump 16 can be open-loop and / or closed-loop controlled depending on at least one pump adjustment variable (pump operation variable). Depending on the fluid return flow (flow rate) from the circuit 24, for example, it can be set via the pump adjustment variable that the second pump 16 pumps more or less fluid from the second container 18 into the first container 14. In a further embodiment, the pump adjustment variable is preferably selected such that both the first container 14 and the second container 18 do not overflow or run out.
[0064] In a further embodiment, the pump adjustment amount depends on at least one of the following fluid volumes per unit time: the volume of fluid flowing back from the circuit 24 into the second container 18, - the volume of fluid pumped from the second container 18 into the first container 14; the volume of fluid pumped from the first container 14 into the circuit 24;
[0065] In one embodiment according to Fig. 7, a method for filtering and cooling a fluid for machines processing plastics and plasticizable materials, in particular injection molding machines, is shown, in which at least a fluid is pumped from a first container 14 into a circuit 24 and the fluid is pumped into the first container 14 via a cooling device 19 and / or a filter device 21. The fluid from the circuit 24 is collected in a second container 18, which is separate from the first container 14, and is pumped from the second container 18 into the first container 14 via the cooling device 19 and / or the filter device 21.
[0066] In a further embodiment according to FIG. 7, the second container 18 and the first container 14 are fluidically connected in series.
[0067] In the embodiment of FIG. 7 , the pumping of fluid from the second container 18 into the first container 14 is controlled depending on the fluid (fluid volume) collected in the second container 18 from the circuit 24, the fluid fill level in the first container 14 and / or the second container 18, and / or the fluid (fluid volume) pumped into the circuit 24 from the first container 14.
[0068] In a further embodiment according to FIG. 7, at least as much fluid is pumped from the second container 18 into the first container 14 as fluid reaches from the circuit 24 into the second container 18 .
[0069] In a further embodiment according to FIG. 7, the second pump 16 is controlled such that at least as much fluid is pumped from the second container 18 into the first container 14 as fluid reaches from the circuit 24 into the second container 18.
[0070] The pumping of the fluid from the second container 18 into the first container 14 is, in a further embodiment according to FIG. 7, controlled in dependence on at least one pump adjustment variable.
[0071] In a further embodiment according to FIG. 1, the pump adjustment amount is selected such that no fluid flows from the first container 14 into the second container 18 .
[0072] To advantageously prevent "contaminated" fluid from being pumped into circuit 24, in a further preferred embodiment, first container 14 and / or second container 18 may be selected or configured with respect to their size or volume to prevent overflow of containers 14, 18. For example, containers 14, 18 may be configured to be at least as large as the total fluid volume to be used.
[0073] 8a to 8d show further preferred embodiments showing the arrangement of the containers 14, 18, 28 relative to each other.
[0074] In Fig. 8a, the first container 14 and the second container 18 are arranged side by side (juxtaposed) and are separated from each other by a separator 26, for example a wall. For example, the containers 14, 18 can be joined together (joined) such that their walls are in physical contact and thus form the separator 26. However, it is also possible that an additional separator 26 is provided.
[0075] In Fig. 8b, the first container 14 and the second container 18 are each part of a third container 28 and are separated from each other by a separator 26. It is also conceivable in principle that the first container 14 and the second container 18 together form the third container 28 and are separated from each other by the separator 26. It is also conceivable that the third container 28 forms the first container 14 and the second container 18 by the separator 26.
[0076] In Fig. 8c, the first container 14 and the second container 18 are part of a third container 28, in which the first container 14 and the second container 18 are arranged spatially separated from each other, so that the separator 26 is not necessary. For example, the containers 14, 18 can be arranged in the third container 28 without their walls being in physical contact. Advantageously, therefore, even if the containers 14, 18 overflow, their contents do not mix. Advantageously, in the event of overflow of one of the containers 14, 18, the overflow is collected in the third container 28.
[0077] In Fig. 8d, the first container 14 and the second container 18 are arranged spatially separated from one another, which likewise eliminates the need for a separator 26. Advantageously, in the event of overflow of one of the containers 14, 18, the contents of each will not mix.
[0078] In a further preferred embodiment according to Fig. 4, the entry of fluid into the first container 14 and / or the second container 18 takes place as far away as possible from the first pump 12 and / or the second pump 16. For example, fluid enters the first container 14 from the hose 40 at the "lower left side" of Fig. 4 and is further pumped by the first pump 12 at the "upper right side". Naturally, the location of the entry of fluid and the location of the further pumping of fluid can vary depending on the configuration of the containers.
[0079] In a further preferred embodiment according to FIG. 9, an obstacle 38, for example a metal plate, is fixed in the first container 14 at the bottom and another obstacle 38, for example a transverse metal plate, is fixed at the upper fluid level. In FIG. 9, the fluid flow is illustrated by arrows. The fluid is thereby forced to flow upwards at the lower metal plate and downwards at the upper metal plate, the vertical surface of the obstacle advantageously additionally promoting the outgassing, since gas bubbles precipitate on the walls of the metal plate and rise upwards. In principle, any number of obstacles 38 can be provided, depending on the space in the container. In principle, the second container 18 or the first container 14 and the second container 18 can also have a calming zone 36. It is also possible that several calming zones 36 are provided in the first container 14 and / or the second container 18.
[0080] In a further preferred embodiment according to Fig. 10, the first container 14 has a calming zone 36 with three obstacles 38, for example with three walls. In principle, however, any number of obstacles 38 can be provided. The fluid is thereby forced to flow over a relatively long path, for example in a meandering shape, so that the fluid is given more time to release gas. In principle, the second container 18 or the first container 14 and the second container 18 can also have a calming zone 36. It is also possible that several calming zones 36 are provided in the first container 14 and / or the second container 18.
[0081] In a further preferred embodiment, the embodiment according to figure 9 and the embodiment according to figure 10 can also be combined with one another, whereby the fluid can be forced by a number of obstacles 38, for example by a bottom metal plate and by a lateral metal plate, to flow upwards at the lower metal plate and downwards at the upper metal plate, whereby the fluid is simultaneously forced into the meandering section.
[0082] In a further preferred embodiment according to FIG. 10, at least one calming zone 36 is provided between the point of entry of the fluid into the first container 14 and / or the second container 18 and the first pump 12 and / or the second pump 16, in which the fluid outgases.
[0083] Obviously, there are many different modifications, variations and adaptations to the present description, provided they fall within the scope and range of equivalents of the appended claims. [Explanation of symbols]
[0084] 10 Fluid cooling filter device 12 First Pump 14 1st container 16 Second Pump 18 Second container 19 Cooling device 21 Filter device 22 Machine Stand 24 Circulation route 26 Separation part 28 Third container 30 Horse 32 Arrow 34 Fluid Sensor 36 Calming Zone 38 Obstacles (Barriers) 40 Horse
Claims
1. 1. A fluid cooled filter apparatus configured for a machine that processes plastics and plasticizable materials, comprising: a first pump (12) configured to pump at least one fluid from a first vessel (14) into a circulation path (24); and a second pump (16) configured to pump the fluid into said first vessel (14) through at least one cooling device (19) and / or filtering device (21), at least one second vessel (18) separated from the first vessel (14) and adapted to collect fluid from the circulation line (24), from which the second pump (16) pumps the fluid through the cooling device (19) and / or the filtering device (21) into the first vessel (14); at least the second pump (18) is controllable at least depending on the fluid withdrawn from the circuit (24) into the second container (18) and / or depending on the fill level of fluid in the first container (14) and / or the second container (18), the first vessel (14) and / or the second vessel (18) having at least one settling zone (36), the settling zone (36) having at least one obstruction, the obstruction forcing fluid into a predetermined section; A device characterized by:
2. the second container (18) and the first container (14) are arranged in series in terms of fluid technology; 2. The device according to claim 1, wherein:
3. the first container (14) and / or the second container (18) are disposed in a machine stand (22); 2. The device according to claim 1, wherein:
4. the first container (14) and the second container (18) are parts of a third container (28) and are separated from each other by at least one separator (26); 2. The device according to claim 1, wherein:
5. the first container (14) and / or the second container (18) have at least one fluid sensor (34); 2. The device according to claim 1, wherein:
6. at least said second pump (16) is open-loop and / or closed-loop controllable depending on at least one pump adjustment variable; 2. The device according to claim 1, wherein:
7. the pump adjustment is selected so as to avoid overflow or underflow of both the first container (14) and the second container (18); 7. The device according to claim 6, wherein:
8. The pump adjustment amount depends on at least one of the following fluid volumes per unit time: - the fluid volume flowing back from said circuit (24) into said second container (18), - the volume of fluid pumped from said second container (18) into said first container (14), - the volume of fluid pumped from said first container (14) into said circuit (24), Dependence on at least one of:
7. The device according to claim 6, wherein:
9. the fluid flow into the first container (14) and / or the second container (18) is carried out as far away as possible from the first pump (12) and / or the second pump (16); 2. The device according to claim 1, wherein:
10. the at least one calming zone (36) is provided between a point of fluid entry into the first container (14) and / or the second container (18) and the first pump (12) and / or the second pump (16); 2. The device according to claim 1, wherein:
11. 1. A method for filtering and cooling fluids for machines that process plastics and plasticizable materials, comprising: At least one fluid is pumped from a first vessel (14) into a circuit (24), the fluid being pumped into said first vessel (14) via a cooling device (19) and / or a filtering device (21); The fluid is collected from the circuit (24) into a second vessel (18) separate from the first vessel (14); Fluid is pumped from the second vessel (18) through the cooling device (19) and / or the filtering device (21) into the first vessel (14); the pumping of fluid from the second container (18) into the first container (14) is controlled depending on the fluid withdrawn from the circuit (24) into the second container (14), depending on the fluid fill level in the first container (14) and / or the second container (18), and / or depending on the fluid pumped from the first container (14) into the circuit (24); Fluid in the first vessel (14) and / or the second vessel (18) is forced into at least one section of at least one calming zone (36), the calming zone (36) having at least one obstacle that forces fluid into the section; A method characterized by:
12. the second container (18) and the first container (14) are fluidically connected in series; The method of claim 11 , wherein:
13. at least as much fluid is pumped from the second container (18) into the first container (14) as is fluid reaching the second container (18) from the circulation path (24); The method of claim 11 , wherein:
14. pumping of fluid from the second container (18) into the first container (14) is controlled in dependence on at least one pump adjustment; The method of claim 11 , wherein:
15. the pump adjustment rate is selected so that fluid does not flow from the first container (14) into the second container (18); The method of claim 14, wherein:
16. the fluid remains in the first container (14) and / or the second container (18) at least until air absorbed in the fluid is expelled; The method of claim 11 , wherein:
17. 1. A machine for processing plastics and other plasticizable materials, comprising: the machine comprises at least one fluid cooled filter device (10) according to any one of claims 1 to 10 and / or is configured and / or set and / or installed to carry out the method according to any one of claims 11 to 16; A machine characterized by: