• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Arrangement of at least one cutting or boring tool (1, 2), in particular diamond tool, for the concrete machining and at least one cooling unit (3, 4, 5, 6, 8) for cooling the at least one cutting or boring tool by means of a cooling liquid (W) , in particular water, wherein the at least one cooling unit is adapted to lower the temperature of the cooling liquid by evaporation of a part of the cooling liquid by direct contact with air (L).
    公开号:AT516700A4
    申请号:T50386/2015
    申请日:2015-05-12
    公开日:2016-08-15
    发明作者:
    申请人:Tyrolit - Schleifmittelwerke Swarovski K G；
    IPC主号:
    专利说明:

    The invention relates to an arrangement of at least one cutting or drilling tool, in particular diamond tool, for the concrete processing and at least one cooling unit for cooling the at least one cutting or drilling tool by means of a cooling liquid, in particular water. The invention further relates to the use of a cooling unit for cooling at least one cutting or drilling tool, in particular diamond tool, for concrete processing by means of a cooling liquid, in particular water, in an arrangement according to the invention, and a method for cooling at least one cutting or drilling tool, in particular diamond tool, for concrete processing by means of a cooling liquid, in particular water.
    In concrete processing, e.g. In controlled demolition, cutting or boring tools are used where it is important to provide sufficient cooling, especially when dealing with diamond tools, to prevent overheating of the diamonds contained in the cutting segments.
    It is known to use cooling water for such cooling, which flows over parts of the cutting or drilling tools.
    The problem has now been found that in warm countries, such. India, the temperatures of the water, which is used for cooling, are above the predetermined maxima. Instead of a predetermined maximum value of e.g. 25 ° C, the temperatures of the cooling water can be much higher, namely up to 60 ° C. This results in a reduced cutting performance as well as a reduced service life of the cutting or drilling tools.
    The objective technical object of the invention is thus to provide an arrangement according to the preamble of claim 1 which solves the problems described above in a simple way and in particular is suitable to be used in warm countries. Another task of
    Invention is to provide the use of a cooling unit in such an arrangement, as well as a corresponding method for cooling.
    These objects are achieved by the features of independent claims 1, 15 and 16.
    It is thus provided that the at least one cooling unit of the arrangement according to the invention is designed to reduce the temperature of the cooling liquid by evaporation of a portion of the cooling liquid by direct contact with air. This physical process is also referred to as evaporative cooling or adiabatic cooling. In other words, the at least one cooling unit is designed as an evaporative cooler.
    According to a preferred embodiment of the invention, it is provided that the at least one cutting or drilling tool and the at least one cooling unit are spatially separated from each other. Through this spatial separation, it is possible to adapt the arrangement in a flexible manner to different applications. For example, an arrangement is conceivable from at least two cutting or drilling tools, which can be cooled by means of a provided by at least one cooling unit cooling liquid. Another example would be an assembly of at least one cutting or drilling tool that is coolable by means of a cooling fluid provided by at least two cooling units. In this case, the two cooling units can be arranged either parallel or in series with respect to the at least one cutting or drilling tool (see Fig. 3 and 4).
    In the case of such a spatial separation of cutting or drilling tool and cooling unit, it is also advantageous if these two components are substantially interconnected via at least one, preferably exactly one, line for the cooling liquid, since the or the cutting or drilling tools then relatively independent of the or the cooling units are manageable. In addition, the cutting or drilling tools used need not be modified from existing systems in that one or more cooling units are integrated as a unit into the cutting or drilling tools. Rather, it is only necessary to integrate one or more cooling units in the system for providing the cooling fluid modular and adapted to the respective requirements. In the event that the at least one cutting or drilling tool and the at least one cooling unit are connected to each other substantially via exactly one line for the cooling liquid, results in an open coolant system - in contrast to a closed coolant circuit - which one or more sources of cooling liquid and a or more cooling liquid. A simple type of cooling fluid sink is to remove the cooling fluid, e.g. when it comes to water, discharge into the environment in the course of cutting or drilling.
    For connecting the at least one cooling unit in a cooling fluid system, it is advisable to provide the at least one cooling unit with an inlet and a drain for the cooling liquid. Favorable embodiments of this embodiment also result from the fact that the inlet and / or outlet is provided with a valve for regulating the amount of cooling liquid flowing in or out, and that the valve is preferably controllable via a switch, particularly preferably via a float switch. Such a float switch favors the pressureless formation of at least one cooling unit. The cooling liquid in this case flows through the cooling unit due to gravity. For this purpose, however, inlet and outlet must be matched by means of appropriate valves, which by the provision of a float switch, which is arranged for example in a collecting device for accumulating the cooled liquid and depending on the amount of accumulated coolant controls the inflow via the corresponding valve in a simple Way is possible.
    In particular, in a spatial separation of the cooling unit and cutting or drilling tool, it is appropriate if the arrangement comprises at least one pump for conveying the cooling liquid from the at least one cooling unit to at least one cutting or drilling tool, wherein the at least one pump preferably in the interior the at least one cooling unit is arranged.
    In order to improve the operation of the at least one cooling unit with regard to the lowering of the temperature of the cooling liquid by evaporation of a portion of the cooling liquid by direct contact with air, it may be provided that the at least one cooling unit has an inlet and an outlet for air, wherein between the inlet and outlet preferably an air conveying unit is arranged to bring about an air flow between inlet and outlet, and / or that the at least one cooling unit comprises a heat exchanger unit for forming the direct contact between the cooling liquid and the air, wherein the at least one cooling unit in this case conveniently comprises a device for distributing the cooling liquid over the heat exchanger unit.
    An advantageous embodiment of the heat exchanger unit is that the heat exchanger unit comprises at least a first and a second chamber, wherein the first chamber is adapted to evaporate a portion of the cooling liquid by direct contact with air, and the second chamber thereto is formed, to be flowed through by a part of the cooling liquid without evaporation, wherein the first and the second chamber are preferably interconnected by cooling fins. With such a configuration, the temperature of that part of the cooling liquid flowing through the second chamber is indirectly lowered by the evaporation of the part of the cooling liquid introduced into the first chamber. In this way, the cooling unit can be realized pumpless, since in the cooling liquid-carrying channels, the pressure of the cooling liquid can be maintained.
    The air delivery unit may be, for example, a fan. Depending on the arrangement of the air conveying unit with respect to the heat exchanger unit for forming the direct contact between the cooling liquid and the air and the inlet and the outlet, it is possible to use a draft ventilator (see Fig. 1 or 5) or compressed air fan (cf. 6).
    Protection is also desired for the use of a cooling unit for cooling at least one cutting or drilling tool, in particular diamond tool, for concrete processing by means of a cooling liquid, in particular water, in an arrangement according to the invention, wherein the cooling unit is adapted to the temperature of the cooling liquid by evaporation of a Part of the cooling liquid by direct contact with air to lower.
    Finally, protection is desired for a method of cooling at least one cutting or boring tool, in particular a diamond tool, for concrete machining by means of a cooling liquid, in particular water.
    Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the drawings. Show:
    1 shows a first embodiment of an arrangement of a cooling unit and a cutting or drilling tool,
    2 shows a second embodiment of such an arrangement,
    3 shows a third embodiment of such an arrangement,
    4 shows a fourth embodiment of such an arrangement,
    5 shows a first modified embodiment of the cooling unit,
    6 shows a second modified embodiment of the cooling unit,
    Fig. 7a, b, a third modified embodiment of the cooling unit (part of a) or the heat exchanger unit of this cooling unit (part of figure b) and Fig. 8, the inventive method for cooling at least one
    Cutting or drilling tool.
    In the first exemplary embodiment shown in FIG. 1, it is provided that the arrangement comprises a cutting or boring tool 1 and a cooling unit 3 for cooling the cutting or boring tool by means of a cooling liquid W in the form of water. The water is taken from a water source and introduced via an inlet 12 into the cooling unit 3, wherein the inflow by means of a valve 14 is adjustable.
    The cooling unit 3 comprises a housing 27 and inside the housing a heat exchanger unit 21 for direct contact between the cooling liquid W and air L is arranged. In order to maximize the contact area, a device 22 for distributing the cooling liquid W over the heat exchanger unit 21 is provided. The heat exchanger unit 21 itself can be designed very differently. Advantageously, the wetting elements have the largest possible surface, so that the largest possible contact area between the cooling liquid W and air L is established.
    An air flow through the cooling unit 3 and thus via the heat exchanger unit 21 is realized in that in the housing 27, an inlet 18, and on the opposite side of the housing an outlet 19 is provided for air, wherein an air conveying unit 20 in the form of a Rotor ensures that the air L is sucked through the inlet 18 into the housing 27 of the cooling unit 3 and blown out through the outlet 19 again.
    Due to the direct contact of the air L with the cooling liquid W in the heat exchanger unit 21, part of the cooling liquid evaporates. Thereby, the temperature of the liquid remaining in the liquid phase is lowered. The evaporated portion is taken up by the air L and discharged via the outlet 19 to the environment of the cooling unit. This evaporative cooling works particularly well in warm countries, such as India, where the ambient air is usually warm and dry.
    The cooled cooling liquid W drips into a collecting device 23 for accumulating the cooled cooling liquid. From there it is fed by means of a pump 17 via a provided with a valve 15 drain 13 and a line 7 to the cutting or drilling tool 1.
    By means of the cooling unit 3, it is easily possible to lower cooling water with a temperature of over 60 ° C to <25 ° C, so that maximum predetermined temperature values can be easily met.
    The cutting or drilling tool 1 has a coolant connection, which is connected to the line 7. The cooling liquid W is subsequently passed on to those areas of the cutting or boring tool 1 where cooling is to take place, e.g. the drive unit 10 and / or the tool 11 itself. In the course of cooling, evaporation of part of the cooling liquid W may also occur in the cutting or boring tool 1. Following the cooling of the cutting or drilling tool 1, the remaining cooling liquid W is released to the environment.
    According to a second embodiment of the arrangement according to the invention, which is shown in Figure 2, it is provided that the arrangement comprises a cooling unit 3, e.g. of the kind shown in Figure 1, and at least two cutting or boring tools 1 and 2 connected thereto. Such a configuration is advantageous because with a single cooling unit equal to several cutting or drilling tools can be supplied with cooled coolant.
    Figures 3 and 4 show a third and fourth embodiment of the arrangement according to the invention, wherein two cooling units 3 and 4 are provided which supply a cutting or drilling tool 1 with cooled coolant, wherein according to the embodiment shown in Figure 3, the cooling liquid W in a parallel arrangement of the cutting or drilling tool 1 is supplied, whereas in the case of the embodiment shown in Figure 4, the cooling of the cooling liquid W takes place in two stages, namely, that a first cooling is carried out by the cooling unit 3, and the pre-cooled in this way coolant W is then supplied via a line 26 to a second cooling unit 4, whereby the temperature of the cooling liquid W is lowered even further. Such a configuration is e.g. relevant for cutting or drilling tools, in which the tools are operated at high speeds, which are associated with a high heat development.
    Figure 5 shows a comparison with the cooling unit shown in Figure 1 cooling unit 5, wherein the modification consists essentially in that a
    Float switch 16 is provided in the collecting device 23 for accumulation of the cooled cooling liquid W, which controls or regulates depending on the water level, a control valve 14 in the water inlet 12 via a signal line 25. This configuration makes it possible to operate the cooling unit 5 in a simple manner without pressure, i. allowing the cooling liquid to flow through the cooling unit only by gravity, without having to pressurize the supplied cooling liquid.
    Finally, FIG. 6 shows the configuration of a cooling unit 6, in which the relative arrangement of the heat exchanger unit 21 and the air conveying unit 20 with respect to the inlet 18 and the outlet 19 for the air L compared to the embodiments shown in Figures 1 and 5 was reversed. In this way, instead of a draft fan results in a pressure fan. This means that the air L is first sucked in through the inlet 18 by means of the air conveying unit 20 and then blown over the heat exchanger unit 21 and finally discharged from the outlet 19 - enriched with the evaporated cooling liquid - to the environment.
    FIG. 7a shows a third embodiment of the cooling unit 8: the cooling liquid W to be cooled is introduced into the cooling unit 8 via a feed 12 provided with a valve 14 and a heat exchanger unit 9 arranged therein, which is shown schematically in detail in FIG. fed. Before entering the heat exchanger unit 9, the cooling liquid flow W is split up into partial flows W1 and W2, whereby the partial flow W2 predominates.
    The heat exchanger unit comprises two different types of chambers, namely a first type of chambers - designated by the reference numeral 30 - which is adapted to evaporate the portion W1 of the cooling liquid by direct contact with the air L, and a second type of chambers - provided with the reference numeral 29 - which is adapted to be flowed through by the part W2 of the cooling liquid without evaporation. This second type of chambers is not traversed by the air L.
    The chambers 29 and 30 are arranged alternately adjacent to one another and connected to one another via cooling fins 28. Due to the evaporation of the part W1 of the cooling liquid in the first type 30 of chambers, the cooling fins are cooled. These subsequently lower the temperature of the part W2 of the cooling liquid which flows through the second type 29 of the chambers. The cooling liquid W2 from the chambers 29 is summarized again after cooling in a collecting device 31 to a cooling liquid flow W and forwarded to the cutting or drilling tool 1.
    An essential advantage of this arrangement is that it is possible to dispense with a pump, as shown for example in the exemplary embodiment shown in FIG. 1, since it is possible to supply the part W 2 of the cooling liquid under pressure through the heat exchanger unit 9 to lead.
    FIG. 8 schematically shows, in the form of a flow chart, the three essential method steps of the method 24 for cooling at least one cutting or drilling tool, in particular diamond tool, for the concrete processing by means of a cooling liquid, in this case water, wherein in a first step i the temperature of the cooling liquid in at least one cooling unit is lowered by evaporation of a portion of the cooling liquid by direct contact with air, the cooling liquid is supplied in a second step ii the at least one cutting or drilling tool and the cooled at least one cutting or drilling tool in a third step iii by means of the cooling liquid becomes.
    By means of the loop shown in dashed lines is indicated that in order to meet the embodiment of the arrangement shown in Figure 4, it may optionally be provided that the cooled cooling liquid is again either the same or another cooling unit is supplied to the temperature of the cooling liquid yet lower further.
    Innsbruck, on May 12, 2015
    权利要求:
    Claims (16)
    [1]
    1 claims:
    1. Arrangement of at least one cutting or boring tool (1, 2), in particular diamond tool, for the concrete machining and at least one cooling unit (3, 4, 5, 6, 8) for cooling the at least one cutting or boring tool by means of a cooling liquid (W) , in particular water, characterized in that the at least one cooling unit is adapted to lower the temperature of the cooling liquid by evaporation of a portion of the cooling liquid by direct contact with air (L).
    [2]
    2. Arrangement according to claim 1, wherein the at least one cutting or drilling tool (1,2) and the at least one cooling unit (3, 4, 5, 6, 8) are spatially separated.
    [3]
    3. Arrangement according to claim 2, wherein the at least one cutting or drilling tool (1,2) and the at least one cooling unit (3, 4, 5, 6, 8) substantially via at least one, preferably exactly one, line (7). are connected to each other for the cooling liquid.
    [4]
    4. Arrangement according to one of claims 1 to 3, wherein the at least one cooling unit (3, 4, 5, 6, 8) has an inlet (12) and a drain (13) for the cooling liquid (W).
    [5]
    5. Arrangement according to claim 4, wherein the inlet and / or outlet is provided with a valve (14, 15) for regulating the inflowing and outflowing amount of cooling liquid, and wherein the valve (14) preferably via a switch, more preferably above a float switch (16) is adjustable.
    [6]
    6. Arrangement according to one of claims 1 to 5, wherein the arrangement comprises at least one pump (17) for conveying the cooling liquid (W) of the at least one cooling unit (3, 4, 5, 6) for at least one cutting or drilling tool (1 , 2), wherein the at least one pump is preferably arranged in the interior of the at least one cooling unit.
    [7]
    7. Arrangement according to one of claims 1 to 6, wherein the at least one cooling unit (3, 4, 5, 6, 8) has an inlet (18) and an outlet (19) for air (L), wherein between inlet and outlet Preferably, an air conveying unit (20) is arranged to bring about an air flow between inlet and outlet.
    [8]
    8. Arrangement according to one of claims 1 to 7, wherein the at least one cooling unit (3, 4, 5, 6, 8) has a heat exchanger unit (21,9) for forming the direct contact between the cooling liquid (W) and the air (L).
    [9]
    9. Arrangement according to claim 8, wherein the at least one cooling unit (3, 4, 5, 6) comprises a device (22) for distributing the cooling liquid (W) over the heat exchanger unit (21).
    [10]
    10. Arrangement according to claim 8 or 9, wherein the heat exchanger unit (9) comprises at least a first (30) and a second chamber (29), wherein the first chamber (30) is adapted to a part of the cooling liquid (W1) to evaporate by direct contact with air (L), and the second chamber (29) is adapted to be flowed through by a part of the cooling liquid (W2) without evaporation.
    [11]
    11. The arrangement of claim 10, wherein the first (30) and the second chamber (29) by cooling fins (28) are interconnected.
    [12]
    12. Arrangement according to one of claims 1 to 11, wherein the at least one cooling unit (3, 4, 5, 6, 8) comprises a collecting device (23, 31) for accumulating the cooled cooling liquid (W).
    [13]
    13. Arrangement according to one of claims 1 to 12, wherein the arrangement comprises at least two cutting or drilling tools (1,2) which can be cooled by means of one of at least one cooling unit (3) provided cooling liquid (W).
    [14]
    14. Arrangement according to one of claims 1 to 12, wherein the arrangement comprises at least one cutting or drilling tool (1) which can be cooled by means of one of at least two cooling units (3, 4) provided cooling liquid (W).
    [15]
    15. Use of a cooling unit (3, 4, 5, 6, 8) for cooling at least one cutting or drilling tool (1,2), in particular diamond tool, for concrete processing by means of a cooling liquid (W), in particular water, in an arrangement according to one of claims 1 to 14, wherein the cooling unit is adapted to lower the temperature of the cooling liquid by evaporation of a part of the cooling liquid by direct contact with air (L).
    [16]
    16. Method (24) for cooling at least one cutting or boring tool (1, 2), in particular diamond tool, for concrete machining by means of a cooling liquid (W), in particular water, wherein i. in a first step, the temperature of the cooling liquid in at least one cooling unit (3, 4, 5, 6, 8) is lowered by evaporation of a part of the cooling liquid by direct contact with air (L), ii. the cooling liquid is supplied in a second step to the at least one cutting or drilling tool and iii. the at least one cutting or drilling tool is cooled in a third step by means of the cooling liquid. Innsbruck, May 12, 2015
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50386/2015A|AT516700B1|2015-05-12|2015-05-12|Arrangement of at least one cutting or drilling tool, in particular diamond tool, for the concrete processing and at least one cooling unit|ATA50386/2015A| AT516700B1|2015-05-12|2015-05-12|Arrangement of at least one cutting or drilling tool, in particular diamond tool, for the concrete processing and at least one cooling unit|
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