CA2657166C - Cooling device for a working fluid - Google Patents
Cooling device for a working fluid Download PDFInfo
- Publication number
- CA2657166C CA2657166C CA2657166A CA2657166A CA2657166C CA 2657166 C CA2657166 C CA 2657166C CA 2657166 A CA2657166 A CA 2657166A CA 2657166 A CA2657166 A CA 2657166A CA 2657166 C CA2657166 C CA 2657166C
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- CA
- Canada
- Prior art keywords
- working fluid
- heat exchanger
- pressure pump
- cooling
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 239000012530 fluid Substances 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000002826 coolant Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000009849 deactivation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 239000003570 air Substances 0.000 description 19
- 230000003213 activating effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/11—Outlet temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Other Air-Conditioning Systems (AREA)
- Details Of Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
- Compressor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Cooling device and method for cooling a working fluid of a high-pressure pump with a pressure booster. The cooling device includes a conveyor system comprising at least one pump, at least two heat exchangers arranged in series along the conveyor system, and at least two switches coupled to the at least two heat exchangers. At least one controller is structured and arranged to selectively activate and deactivate the at least two heat exchangers via the at least two switches at an adjustably preset temperature of the working fluid.
Description
COOLING DEVICE FOR A WORKING FLUID
BACKGROUND OF THE INVENTION
1. Field of the Invention [00021 The invention relates to a cooling device for a working fluid of a high-pressure pump with a pressure booster, comprising a conveyor system and heat exchangers for the working fluid.
BACKGROUND OF THE INVENTION
1. Field of the Invention [00021 The invention relates to a cooling device for a working fluid of a high-pressure pump with a pressure booster, comprising a conveyor system and heat exchangers for the working fluid.
2. Discussion of Background Information [00031 High-pressure pumps, such as are used, for example, for water jet cutting installations are usually designed as a pressure booster with a working fluid. During operation, the fluid heats up so that a cooling of the same is preferably carried out in the return line or circulation in the provision tank. For example, with a high-pressure pump of the above-described type having a fed drive power of 37 kilowatts in the working fluid, approx. I I kilowatts are released asthermal energy. However, for reasons of function and wear, the temperature of the working fluid should lie in a range of 55 C to 60 C.
[00041 It is known to provide a cooling of the working fluid with a heat exchanger operated with air. An adjustment of the provided fluid temperature can be carried out in a simple manner through an on/off switching of a fan. However, if there is the risk of a possibly only temporarily exceeding of the cool air temperature of approx. 35 C, a recooling by air is omitted for safety reasons and a heat exchanger that can be acted on with water is provided.
[0005] Heat exchangers of this type that are operated with cooling water also have the advantage that they can be built small or have a small space requirement with a necessary cooling capacity. However, the costs for the quantity of cooling water are often substantial.
SUMMARY OF THE INVENTION
[0006] The invention here intends to overcome the given disadvantages of cooling devices of the type mentioned at the outset for a working fluid and creates a cooling device that during the operation of the high-pressure pump with pressure booster, produces a regulation of a desired temperature of the fluid with the greatest economy and safety.
[0007] According to embodiments of the invention, a cooling device of the type mentioned at the outset is formed with at least two heat exchangers that are switched in series in the cooling circuit. The cooling circuit can be acted on in a targeted manner by at least one pump and has control units through which an activation or deactivation of the respective heat exchangers can be switched at temperatures that can be adjusted as desired.
According to one aspect of the invention there is provided a high pressure pump with a pressure booster and a cooling device for a working fluid of the high pressure pump circulating in a cooling circuit of the cooling device, the cooling device comprising a conveyor system as well as a first heat exchanger and a second heat exchanger arranged in series in the cooling circuit, wherein the cooling circuit is impingeable in a targeted fashion by at least one pump and has a control unit through which an activation or, respectively, deactivation of the first heat exchanger and the second heat exchanger at desired presettable temperatures is switchable by means of a switching agent, wherein the first heat exchanger operates with an air coolant and the second heat exchanger operates with a water coolant.
[0008] It is advantageous that, through respectively connectable heat exchangers, a selected temperature of the working fluid can be adjusted in a simple and in a particularly cost-effective manner.
[0009] Even if the ambient air of the heat exchanger is insufficient to adequately recool the working fluid during periods of elevated outside temperature, which previously would have resulted in an interruption or decrease in the high-pressure pump capacity, a necessary pump capacity can be maintained according to the invention by connecting an additive water cooling.
-2a-P35908.S02 Tests have surprisingly shown that, despite increased equipment costs, the expenditure for the cooling medium in sustained operation of the high-pressure pump with a pressure booster can be kept much lower than with just water or air cooling and yet with increased cooling capacity.
[0010) If one heat exchanger can be activated by air flowing through and a further heat exchanger can be activated by water flowing through in a favorable manner, the desired temperature of the working fluid can be regulated in a particularly efficient manner.
[0011] According to an exemplary embodiment of the invention, the working fluid/air heat exchanger can be activated by electric motors or hydraulic motors. The hydraulic motors can preferably be switched in the cooling circuit, whereby a simple, safe and also economical connectability is achieved.
[0012] If the working fluid/water heat exchanger can be activated by impingement with water via switching means, an effective additional cooling for a desired temperature control of the working fluid units be ensured at low cost for the cooling.
[0013] Preferably, switching units with a simple on/off function are used because this has been found to render possible a particularly simple and safe as well as adequate control switching of the temperature within the desired limits.
[0014] Finally, it has proven to be particularly advantageous, in particular with respect to an energy supply in voltage ranges deviating from the norm, if the drive or the pump for the conveyor system of the working fluid is in active engagement with the drive motor for the high-pressure pump. In this manner it is ensured that a cooling of the working fluid is carried out at the same time as the operation of the high-pressure pump with pressure booster and no reduced capacity of the cooling system due to the feed can occur.
{P35908 00627236.DOC} -3-P35908.S02 [0015] Embodiments of the invention are directed to a cooling device for a working fluid of a high-pressure pump with a pressure booster. The cooling device includes a conveyor system comprising at least one pump, at least two heat exchangers arranged in series along the conveyor system, and at least two switches coupled to the at least two heat exchangers.
At least one controller is structured and arranged to selectively activate and deactivate the at least two heat exchangers via the at least two switches at an adjustably preset temperature of the working fluid.
[0016] According to embodiments, the at least two heat exchangers can include a first heat exchanger operable via air flowing through and a second heat exchanger operable via water flowing through.
[0017] One of the at least two heat exchangers can be activated by one of electric motors and hydraulic motors. Further, the hydraulic motors are switched in series along the conveyor system.
[0018] In accordance with the embodiments, one of the at least two heat exchangers may be activated by impingement with water via a valve.
[0019] According to embodiments of the invention, the at least two switches can include a switch having an on/off function.
[0020] Further, the pump may be arranged in active engagement with a drive motor for the high-pressure pump with the pressure booster.
[0021] A method of cooling a working fluid can include the above-described cooling device.
The method includes selectively activating at least one of the at least two heat exchangers along the conveyor path.
{P35908 00627236.DOC} -4-P35908.S02 [00221 A high-pressure pump with pressure booster may include the above-discussed cooling device.
[00231 Embodiments of the invention are directed to a method of cooling a working fluid of a high-pressure pump with a pressure booster. The method includes conveying a working fluid along a conveyor path of a cooling circuit, switchably activating a first heat exchanger arranged along the conveyor path when a temperature of the working fluid exceeds a first predetermined temperature, and switchably activating a second heat exchanger arranged in series with the first heat exchanger along the conveyor path when a temperature of the working fluid exceeds a second predetermined temperature. The first and second predetermined temperatures are adjustable.
100241 According to embodiments of the invention, the first predetermined temperature can be greater than the second predetermined temperature.
100251 In accordance with other embodiments, the method can also include switchably deactiving the first heat exchanger when the temperature of the working fluid is below a first predetermined low temperature. Alternatively, the method can also include switchably deactivating the high pressure pump when a temperature of the working fluid exceeds a third predetermined temperature that is greater than the second predetermined temperature.
100261 In accordance with still yet other embodiments of the present invention, the first heat exchanger can use air. Further, the second heat exchanger can use water.
100271 Other exemplary embodiments and advantages of the present invention may be ascertained by reviewing the present disclosure and the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
(P35908 00627236.DOC) -5-P35908.S02 [0028] The present invention is further described in the detailed description which follows, in reference to the noted drawing by way of a non-limiting example of the exemplary embodiment of the present invention, wherein:
[0029] The Figure shows a cooling device according to the invention in principle.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0030] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show structural details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.
[0031] The Figure diagrammatically illustrates a vessel 11 containing working fluid A. A
cooling circuit 4 for working fluid A includes a working fluid conveyer formed by a pump 5 to draw working fluid A from vessel 11 through a line (or working fluid conveyor) 14 and to produce the circulation of working fluid A through a cooling device 1 on its return to vessel 11.
Cooling circuit 4 can also include a filter device 10 for particles with a diameter of, e.g., greater than 5 m. Advantageously, filter device 10 can be switchably activatable in cooling circuit 4.
[0032] As illustrated, cooling device 1 can include at least two heat exchangers 2 and 3 arranged in series, relative to a working fluid circulation direction, in cooling circuit 4. Heat exchanger 2 can be operated with an air coolant produced, e.g., by a fan 9, while heat exchanger {P35908 00627236.DOC} -6-P35908.S02 3 can be operated with a water coolant supplied through, e.g., a valve 7. Fan 9 and valve 7 are activated/deactivated through the opening/closing of switching units 6 and 17.
[00331 A control unit 8', which can be coupled to a temperature sensor 81', and a control unit 8, which can be coupled to a temperature sensor 81, can be connected to selectively open/close respective switching units 6 and 17 when predefined temperatures of working fluid A in vessel 11 is exceeded. A control unit 8" coupled to a temperature sensor 81" can be provided as a safety device to activate a switch to turn off the high-pressure pump when an upper limit temperature of working fluid A in vessel A is exceeded.
[00341 In the operation of, e.g., a high-pressure pump with a pressure booster, working fluid A
is guided or drawn into cooling circuit 4 and can be continuously cleaned in a filter 10.
Alternatively, filter 10 can be switchably activated to selectively clean working fluid A in cooling circuit 4. Temperature sensors 81, 81', and 81 " are arranged in vessel 11 to measure or detect the temperature working fluid A, and control units 8, 8', and 8" are designed to monitor the temperature of working fluid A to activate/deactivate heat exchangers 2 and 3 or pump 5.
100351 By way of example, control unit 8' can be set so that, at a predefined working fluid temperature of, e.g., 50 C, switching unit 6 can be closed to activate a cooling air impingement in heat exchanger 2, e.g., by turning on a fan 9 to blow cooling air into cooling circuit 4. Further, control unit 8' can also be set so that, at a predefined working fluid temperature of, e.g., 45 C, switching unit 6 can be opened to deactivate the cooling air impingement in heat exchanger 2.
With this selective control of the cooling air impingement in heat exchanger 2 by control unit 8', an advantageous temperature stability of working fluid A and, thus, a gentle continuous operation at full load of a high-pressure pump can easily be achieved in normal cases.
{P35908 00627236.DOC) -7-P35908.S02 [0036] However, because sometimes the cooling air temperature in heat exchanger 2 may be too high or the cooling air quantities are too low, the temperature of working fluid A may rise or continue to rise to a temperature greater than the cooling air impingement of heat exchanger 2 can adequately cool. Thus, when control unit 8 detects a temperature of working fluid A in vessel 11 of greater than, e.g., 60 C, switching unit 17 can be closed in order to activate valve 7 to allow cooling water to flow into heat exchanger 3. In this way, additional cooling of working fluid A is performed or carried out in heat exchanger 3 so as to achieve further heat removal from the working fluid A.
[0037] It is understood that control units 8, 8', and 8" can be combined into a single control unit to monitor the temperature of working fluid A, and to selectively activate/deactivate cooling in heat exchangers 2 and 3, and/or pump 5. In this manner, activation and coordination of the cooling fluid (air or water) into its respective heat exchanger can be easily controlled according to an on/off function of the control unit 8. Further, a single temperature sensor can be utilized with a single or multiple control units.
[0038] It is noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention. While the present invention has been described with reference to an exemplary embodiment, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all {P35908 00627236.DOC} -8-P35908.S02 functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.
{P35908 00627236.DOC} -9-P35908.S02 Listing of Reference Numerals A Working fluid 1 Cooling device 2 Heat exchanger working fluid/air 3 Heat exchanger working fluid/water 4 Cooling circuit for working fluid Pump 6 Switching unit 7 Valve 8, 8', 8" Control units 81, 81' 81" Temperature sensor 9 Motor for a fan Filter 11 Vessel 14 Working fluid line 17 Switching unit {P35908 00627236.DOC} -10-
[00041 It is known to provide a cooling of the working fluid with a heat exchanger operated with air. An adjustment of the provided fluid temperature can be carried out in a simple manner through an on/off switching of a fan. However, if there is the risk of a possibly only temporarily exceeding of the cool air temperature of approx. 35 C, a recooling by air is omitted for safety reasons and a heat exchanger that can be acted on with water is provided.
[0005] Heat exchangers of this type that are operated with cooling water also have the advantage that they can be built small or have a small space requirement with a necessary cooling capacity. However, the costs for the quantity of cooling water are often substantial.
SUMMARY OF THE INVENTION
[0006] The invention here intends to overcome the given disadvantages of cooling devices of the type mentioned at the outset for a working fluid and creates a cooling device that during the operation of the high-pressure pump with pressure booster, produces a regulation of a desired temperature of the fluid with the greatest economy and safety.
[0007] According to embodiments of the invention, a cooling device of the type mentioned at the outset is formed with at least two heat exchangers that are switched in series in the cooling circuit. The cooling circuit can be acted on in a targeted manner by at least one pump and has control units through which an activation or deactivation of the respective heat exchangers can be switched at temperatures that can be adjusted as desired.
According to one aspect of the invention there is provided a high pressure pump with a pressure booster and a cooling device for a working fluid of the high pressure pump circulating in a cooling circuit of the cooling device, the cooling device comprising a conveyor system as well as a first heat exchanger and a second heat exchanger arranged in series in the cooling circuit, wherein the cooling circuit is impingeable in a targeted fashion by at least one pump and has a control unit through which an activation or, respectively, deactivation of the first heat exchanger and the second heat exchanger at desired presettable temperatures is switchable by means of a switching agent, wherein the first heat exchanger operates with an air coolant and the second heat exchanger operates with a water coolant.
[0008] It is advantageous that, through respectively connectable heat exchangers, a selected temperature of the working fluid can be adjusted in a simple and in a particularly cost-effective manner.
[0009] Even if the ambient air of the heat exchanger is insufficient to adequately recool the working fluid during periods of elevated outside temperature, which previously would have resulted in an interruption or decrease in the high-pressure pump capacity, a necessary pump capacity can be maintained according to the invention by connecting an additive water cooling.
-2a-P35908.S02 Tests have surprisingly shown that, despite increased equipment costs, the expenditure for the cooling medium in sustained operation of the high-pressure pump with a pressure booster can be kept much lower than with just water or air cooling and yet with increased cooling capacity.
[0010) If one heat exchanger can be activated by air flowing through and a further heat exchanger can be activated by water flowing through in a favorable manner, the desired temperature of the working fluid can be regulated in a particularly efficient manner.
[0011] According to an exemplary embodiment of the invention, the working fluid/air heat exchanger can be activated by electric motors or hydraulic motors. The hydraulic motors can preferably be switched in the cooling circuit, whereby a simple, safe and also economical connectability is achieved.
[0012] If the working fluid/water heat exchanger can be activated by impingement with water via switching means, an effective additional cooling for a desired temperature control of the working fluid units be ensured at low cost for the cooling.
[0013] Preferably, switching units with a simple on/off function are used because this has been found to render possible a particularly simple and safe as well as adequate control switching of the temperature within the desired limits.
[0014] Finally, it has proven to be particularly advantageous, in particular with respect to an energy supply in voltage ranges deviating from the norm, if the drive or the pump for the conveyor system of the working fluid is in active engagement with the drive motor for the high-pressure pump. In this manner it is ensured that a cooling of the working fluid is carried out at the same time as the operation of the high-pressure pump with pressure booster and no reduced capacity of the cooling system due to the feed can occur.
{P35908 00627236.DOC} -3-P35908.S02 [0015] Embodiments of the invention are directed to a cooling device for a working fluid of a high-pressure pump with a pressure booster. The cooling device includes a conveyor system comprising at least one pump, at least two heat exchangers arranged in series along the conveyor system, and at least two switches coupled to the at least two heat exchangers.
At least one controller is structured and arranged to selectively activate and deactivate the at least two heat exchangers via the at least two switches at an adjustably preset temperature of the working fluid.
[0016] According to embodiments, the at least two heat exchangers can include a first heat exchanger operable via air flowing through and a second heat exchanger operable via water flowing through.
[0017] One of the at least two heat exchangers can be activated by one of electric motors and hydraulic motors. Further, the hydraulic motors are switched in series along the conveyor system.
[0018] In accordance with the embodiments, one of the at least two heat exchangers may be activated by impingement with water via a valve.
[0019] According to embodiments of the invention, the at least two switches can include a switch having an on/off function.
[0020] Further, the pump may be arranged in active engagement with a drive motor for the high-pressure pump with the pressure booster.
[0021] A method of cooling a working fluid can include the above-described cooling device.
The method includes selectively activating at least one of the at least two heat exchangers along the conveyor path.
{P35908 00627236.DOC} -4-P35908.S02 [00221 A high-pressure pump with pressure booster may include the above-discussed cooling device.
[00231 Embodiments of the invention are directed to a method of cooling a working fluid of a high-pressure pump with a pressure booster. The method includes conveying a working fluid along a conveyor path of a cooling circuit, switchably activating a first heat exchanger arranged along the conveyor path when a temperature of the working fluid exceeds a first predetermined temperature, and switchably activating a second heat exchanger arranged in series with the first heat exchanger along the conveyor path when a temperature of the working fluid exceeds a second predetermined temperature. The first and second predetermined temperatures are adjustable.
100241 According to embodiments of the invention, the first predetermined temperature can be greater than the second predetermined temperature.
100251 In accordance with other embodiments, the method can also include switchably deactiving the first heat exchanger when the temperature of the working fluid is below a first predetermined low temperature. Alternatively, the method can also include switchably deactivating the high pressure pump when a temperature of the working fluid exceeds a third predetermined temperature that is greater than the second predetermined temperature.
100261 In accordance with still yet other embodiments of the present invention, the first heat exchanger can use air. Further, the second heat exchanger can use water.
100271 Other exemplary embodiments and advantages of the present invention may be ascertained by reviewing the present disclosure and the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWINGS
(P35908 00627236.DOC) -5-P35908.S02 [0028] The present invention is further described in the detailed description which follows, in reference to the noted drawing by way of a non-limiting example of the exemplary embodiment of the present invention, wherein:
[0029] The Figure shows a cooling device according to the invention in principle.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0030] The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the present invention. In this regard, no attempt is made to show structural details of the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.
[0031] The Figure diagrammatically illustrates a vessel 11 containing working fluid A. A
cooling circuit 4 for working fluid A includes a working fluid conveyer formed by a pump 5 to draw working fluid A from vessel 11 through a line (or working fluid conveyor) 14 and to produce the circulation of working fluid A through a cooling device 1 on its return to vessel 11.
Cooling circuit 4 can also include a filter device 10 for particles with a diameter of, e.g., greater than 5 m. Advantageously, filter device 10 can be switchably activatable in cooling circuit 4.
[0032] As illustrated, cooling device 1 can include at least two heat exchangers 2 and 3 arranged in series, relative to a working fluid circulation direction, in cooling circuit 4. Heat exchanger 2 can be operated with an air coolant produced, e.g., by a fan 9, while heat exchanger {P35908 00627236.DOC} -6-P35908.S02 3 can be operated with a water coolant supplied through, e.g., a valve 7. Fan 9 and valve 7 are activated/deactivated through the opening/closing of switching units 6 and 17.
[00331 A control unit 8', which can be coupled to a temperature sensor 81', and a control unit 8, which can be coupled to a temperature sensor 81, can be connected to selectively open/close respective switching units 6 and 17 when predefined temperatures of working fluid A in vessel 11 is exceeded. A control unit 8" coupled to a temperature sensor 81" can be provided as a safety device to activate a switch to turn off the high-pressure pump when an upper limit temperature of working fluid A in vessel A is exceeded.
[00341 In the operation of, e.g., a high-pressure pump with a pressure booster, working fluid A
is guided or drawn into cooling circuit 4 and can be continuously cleaned in a filter 10.
Alternatively, filter 10 can be switchably activated to selectively clean working fluid A in cooling circuit 4. Temperature sensors 81, 81', and 81 " are arranged in vessel 11 to measure or detect the temperature working fluid A, and control units 8, 8', and 8" are designed to monitor the temperature of working fluid A to activate/deactivate heat exchangers 2 and 3 or pump 5.
100351 By way of example, control unit 8' can be set so that, at a predefined working fluid temperature of, e.g., 50 C, switching unit 6 can be closed to activate a cooling air impingement in heat exchanger 2, e.g., by turning on a fan 9 to blow cooling air into cooling circuit 4. Further, control unit 8' can also be set so that, at a predefined working fluid temperature of, e.g., 45 C, switching unit 6 can be opened to deactivate the cooling air impingement in heat exchanger 2.
With this selective control of the cooling air impingement in heat exchanger 2 by control unit 8', an advantageous temperature stability of working fluid A and, thus, a gentle continuous operation at full load of a high-pressure pump can easily be achieved in normal cases.
{P35908 00627236.DOC) -7-P35908.S02 [0036] However, because sometimes the cooling air temperature in heat exchanger 2 may be too high or the cooling air quantities are too low, the temperature of working fluid A may rise or continue to rise to a temperature greater than the cooling air impingement of heat exchanger 2 can adequately cool. Thus, when control unit 8 detects a temperature of working fluid A in vessel 11 of greater than, e.g., 60 C, switching unit 17 can be closed in order to activate valve 7 to allow cooling water to flow into heat exchanger 3. In this way, additional cooling of working fluid A is performed or carried out in heat exchanger 3 so as to achieve further heat removal from the working fluid A.
[0037] It is understood that control units 8, 8', and 8" can be combined into a single control unit to monitor the temperature of working fluid A, and to selectively activate/deactivate cooling in heat exchangers 2 and 3, and/or pump 5. In this manner, activation and coordination of the cooling fluid (air or water) into its respective heat exchanger can be easily controlled according to an on/off function of the control unit 8. Further, a single temperature sensor can be utilized with a single or multiple control units.
[0038] It is noted that the foregoing examples have been provided merely for the purpose of explanation and are in no way to be construed as limiting of the present invention. While the present invention has been described with reference to an exemplary embodiment, it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Changes may be made, within the purview of the appended claims, as presently stated and as amended, without departing from the scope and spirit of the present invention in its aspects. Although the present invention has been described herein with reference to particular means, materials and embodiments, the present invention is not intended to be limited to the particulars disclosed herein; rather, the present invention extends to all {P35908 00627236.DOC} -8-P35908.S02 functionally equivalent structures, methods and uses, such as are within the scope of the appended claims.
{P35908 00627236.DOC} -9-P35908.S02 Listing of Reference Numerals A Working fluid 1 Cooling device 2 Heat exchanger working fluid/air 3 Heat exchanger working fluid/water 4 Cooling circuit for working fluid Pump 6 Switching unit 7 Valve 8, 8', 8" Control units 81, 81' 81" Temperature sensor 9 Motor for a fan Filter 11 Vessel 14 Working fluid line 17 Switching unit {P35908 00627236.DOC} -10-
Claims (8)
1. A high pressure pump with a pressure booster and a cooling device for a working fluid of the high pressure pump circulating in a cooling circuit of the cooling device, the cooling device comprising a conveyor system as well as a first heat exchanger and a second heat exchanger arranged in series in the cooling circuit, wherein the cooling circuit is impingeable in a targeted fashion by at least one pump and has a control unit through which an activation or, respectively, deactivation of the first heat exchanger and the second heat exchanger at desired presettable temperatures is switchable by means of a switching agent, wherein the first heat exchanger operates with an air coolant and the second heat exchanger operates with a water coolant.
2. A high pressure pump in accordance with claim 1, wherein the air coolant of the first heat exchanger is operated by means of at least one electric or hydraulic motor.
3. A high pressure pump in accordance with claim 2, wherein the at least one hydraulic motor is arranged in series in the cooling circuit.
4. A high pressure pump in accordance with claim 1, wherein the water coolant of the second heat exchanger is operated through impingement with water via the switching agent.
5. A high pressure pump in accordance with any one of claims 1 to 3, wherein the switching agent has an on/off function.
6. A high pressure pump in accordance with any one of claims 1 to 5, wherein the pump for the conveyor system of the working fluid is mechanically linked with the drive motor for the high pressure pump.
7. Use of a high pressure pump as defined in any one of claims 1 to 6 for a water jet cutting machine.
8. A water jet cutting machine having a high pressure pump as defined in any one of claims 1 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0038408A AT506086B1 (en) | 2008-03-11 | 2008-03-11 | COOLING DEVICE FOR A WORKFLUID |
| ATA384/2008 | 2008-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2657166A1 CA2657166A1 (en) | 2009-09-11 |
| CA2657166C true CA2657166C (en) | 2011-11-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2657166A Expired - Fee Related CA2657166C (en) | 2008-03-11 | 2009-03-05 | Cooling device for a working fluid |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20090229793A1 (en) |
| EP (1) | EP2101064B1 (en) |
| JP (1) | JP2009216099A (en) |
| AT (2) | AT506086B1 (en) |
| CA (1) | CA2657166C (en) |
| DE (1) | DE502009000563D1 (en) |
| DK (1) | DK2101064T3 (en) |
| ES (1) | ES2365835T3 (en) |
| PT (1) | PT2101064E (en) |
| RU (1) | RU2400648C1 (en) |
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| US9586306B2 (en) | 2012-08-13 | 2017-03-07 | Omax Corporation | Method and apparatus for monitoring particle laden pneumatic abrasive flow in an abrasive fluid jet cutting system |
| US9011204B2 (en) | 2013-07-30 | 2015-04-21 | Omax Corporation | Reducing small colloidal particle concentrations in feed and/or byproduct fluids in the context of waterjet processing |
| US9649744B2 (en) | 2013-07-30 | 2017-05-16 | Omax Corporation | Reducing small colloidal particle concentrations in feed and/or byproduct fluids in the context of waterjet processing |
| SG11201804241UA (en) * | 2015-12-02 | 2018-06-28 | Downunder Geosolutions Pty Ltd | Fluid cooling system and method for electronics equipment |
| US11577366B2 (en) | 2016-12-12 | 2023-02-14 | Omax Corporation | Recirculation of wet abrasive material in abrasive waterjet systems and related technology |
| US11224987B1 (en) | 2018-03-09 | 2022-01-18 | Omax Corporation | Abrasive-collecting container of a waterjet system and related technology |
| CN110374836B (en) * | 2019-06-12 | 2021-04-20 | 同济大学 | A thermostatic electronic water pump |
| US12350790B2 (en) | 2019-07-29 | 2025-07-08 | Hypertherm, Inc. | Measuring abrasive flow rates in a conduit |
| JP7256430B2 (en) * | 2021-09-07 | 2023-04-12 | ダイキン工業株式会社 | hydraulic unit |
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- 2008-03-11 AT AT0038408A patent/AT506086B1/en not_active IP Right Cessation
-
2009
- 2009-01-21 ES ES09151017T patent/ES2365835T3/en active Active
- 2009-01-21 AT AT09151017T patent/ATE507045T1/en active
- 2009-01-21 PT PT09151017T patent/PT2101064E/en unknown
- 2009-01-21 DK DK09151017.2T patent/DK2101064T3/en active
- 2009-01-21 EP EP09151017A patent/EP2101064B1/en not_active Not-in-force
- 2009-01-21 DE DE502009000563T patent/DE502009000563D1/en active Active
- 2009-02-19 US US12/389,159 patent/US20090229793A1/en not_active Abandoned
- 2009-03-05 CA CA2657166A patent/CA2657166C/en not_active Expired - Fee Related
- 2009-03-10 RU RU2009108609/06A patent/RU2400648C1/en not_active IP Right Cessation
- 2009-03-11 JP JP2009090495A patent/JP2009216099A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| PT2101064E (en) | 2011-06-14 |
| ES2365835T3 (en) | 2011-10-11 |
| JP2009216099A (en) | 2009-09-24 |
| AT506086A4 (en) | 2009-06-15 |
| ATE507045T1 (en) | 2011-05-15 |
| CA2657166A1 (en) | 2009-09-11 |
| DK2101064T3 (en) | 2011-08-15 |
| RU2400648C1 (en) | 2010-09-27 |
| EP2101064A1 (en) | 2009-09-16 |
| DE502009000563D1 (en) | 2011-06-09 |
| US20090229793A1 (en) | 2009-09-17 |
| EP2101064B1 (en) | 2011-04-27 |
| AT506086B1 (en) | 2009-06-15 |
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| MKLA | Lapsed |
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