Pump with pressure chamber and cooling system

Abstract

The present invention relates to a pump 1 having a housing 3 surrounding a pressure chamber 2. The pressure chamber 2 has a pressure chamber intake pipe 4 and a pressure chamber exhaust pipe 5 arranged at a distance therefrom. A fluid flowing into the pressure chamber 2 through the pressure chamber intake pipe 4 is pressurized by a displacement part arranged displaceably in the pressure chamber 2, and flows out of the pressure chamber 2 through the pressure chamber exhaust pipe 5. The pump 1 further has a cooling system for cooling the housing 3. The cooling system has at least one heat pipe 12 with a heat transfer medium fluid and at least one cooling body 8. The at least one heat pipe 12 has a housing contact area 13 for bringing the heat pipe 12 into thermally conductive contact with the housing 3, and a cooling body contact area 14 arranged at a distance from the housing contact area 13 for bringing the heat pipe 12 into thermally conductive contact with the at least one cooling body 8. Heat of the housing 3 is transferred from the housing 3 to the at least one cooling body 8 through the at least one heat pipe 12 during a given use of the cooling system.

Description

[Technical field]

[0001] The invention relates to a pump having a housing surrounding a pressure chamber and a cooling system for cooling the housing of the pump, the pump having a pressure chamber intake pipe and a pressure chamber exhaust pipe each leading to the pressure chamber, in which case a fluid flowing into the pressure chamber via the pressure chamber intake pipe can be pressurized by a displacement part displaceably arranged in the pressure chamber and can be discharged from the pressure chamber via the pressure chamber exhaust pipe. [Background technology]

[0002] Generally, pumps or compressors are used to transport the fluid. In the case of a pump, the fluid to be transported is incompressible, while in the case of a compressor, the fluid to be transported is compressible. In the following, regardless of whether a pump or a compressor is used to transport the fluid, the term "pump" as defined above refers to both pumps and compressors, and will be collectively referred to as "pump".

[0003] Many commercially available pumps have a housing that encloses a pressure chamber and has an inlet and an outlet. The inlet is connected to a pressure chamber intake pipe, and the outlet is connected to a pressure chamber exhaust pipe. The fluid to be conveyed flows through the inlet and via the pressure chamber intake pipe into the pressure chamber, is pressurized by a displaceable displacement part arranged in the pressure chamber, and finally flows through the outlet into the pressure chamber exhaust pipe. Various configurations of the displacement part are known from the prior art. In this case, the displacement part can be configured as a piston for pressurizing the fluid in a piston pump or as a diaphragm in a diaphragm pump, among many other configuration possibilities.

[0004] The transport of the fluid necessarily generates heat in the region of the pressure chamber, especially in the case of high volumetric flows, high pressures or high transport speeds of the pump. In order not to damage the pump and to preserve the pump's power, the heat generated in this case must be removed from the pump, since high transport speeds have the disadvantage that frictional heat, which heats up the medium and the pump itself, is generated by friction between the components displaced relative to one another and the fluid to be transported. In exactly the same way, heat can also be generated during compression of the fluid, also in the mechanically moving parts of the pump. All these factors have a great influence, especially when compressing gases at high pressures. In order not to overload the mechanical components of the pump and not to unnecessarily limit the power performance of the pump, the heat generated must be removed from the pump itself or from the housing, as mentioned above. If the fluid in the pressure chamber already has a high temperature at the time of entry or due to heating by the pump, the compression amount and therefore the pressurizing force can be smaller than for a fluid with a lower temperature, because the thermal motion of the fluid molecules opposes the compression. If a sufficiently high heat rejection cannot be guaranteed, only a smaller compression of the fluid can be performed by the pump, thus limiting the pump's power output.

[0005] In order to be able to dissipate the heat generated by the mechanical action and the compression into the housing and finally through this housing to the surroundings, a simple design of the pump has a housing made of a good thermally conductive material, for example made of a metal or a metal alloy, so as to promote the dissipation of heat. In order to be able to avoid an unfavorable heating of the housing, another design has an additional cooling system, in which the individual components or the housing itself can be cooled. Such a cooling system can be configured, for example, as water-cooled. In this case, the heat of the housing can be transferred to a heat transfer fluid, such as water, in contact with the housing, which can absorb the heat of the housing and thereby reduce the temperature of the housing. In general, water-cooling requires that the housing to be cooled is in close proximity to a cooling water circuit and that the cooling power provided by the water cooling is well controlled (open-loop control) or regulated (closed-loop control). In view of the effort required, this cooling effect is often not considered sufficient. Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE DISCLOSURE It is therefore an object of the present invention to provide a pump with a cooling system which can be cooled as efficiently as possible in a simple manner. [Means for solving the problem]

[0007] This problem is solved by at least one heat tube having a housing contact area for bringing the heat tube into thermally conductive contact with the housing and a cooling body contact area arranged spaced apart from the housing contact area for bringing the heat tube into thermally conductive contact with the at least one cooling body, and heat of the housing is transferred from the housing to the at least one cooling body via the at least one heat tube during intended use of the cooling system.

[0008] A high cooling efficiency can be achieved with such a configuration. In this case, heat can be transferred from the pump components subjected to thermal load and / or from the housing itself via at least one heat pipe to the cooling body. By cooling the housing, the pump fluid to be conveyed, which is in contact with the housing, can also be cooled. As a result, a higher volumetric flow rate can be easily achieved with the same configuration of the pump. For example, with a pump configured in this way, temperature limits preset by standards can be reliably below and reliably respected. As a result, a higher power density of the pump can be achieved with the same temperature.

[0009] For this purpose, the inventive arrangement comprises at least one heat pipe and at least one cooling body for dispersing heat from the housing. In this case, the at least one heat pipe can be formed as a straight pipe or a partially curved pipe. In this case, a heat transfer fluid is present in the interior space surrounded by the pipe wall. The at least one heat pipe is thermally connected to the housing of the pump at its housing contact area and to the at least one cooling body at its cooling body contact area opposite to the housing contact area. By heating the housing, the housing contact area of ​​the heat pipe is heated and the initially liquid heat transfer fluid in the heat pipe is likewise heated up to its boiling point. In this case, a part of the heat transfer fluid passes from its liquid phase into a gaseous phase. Due to the local pressure change thus generated, the gaseous medium diffuses in all the interior space and condenses in the cooler cooling body contact area while releasing its heat, as a result of which it returns to its liquid state. In this case, the medium can be heated and returned to the circulation path. The at least one heat pipe can be formed as a pipe having a circular, elliptical or rectangular or other polygonal cross section and can thus be adapted to the respective site and the current conditions at that site. Furthermore, parts of the at least one heat pipe may have different or alternating shapes.

[0010] In this case, at least one heat tube is formed as a passively acting heat pipe, in particular by dividing the interior space of the at least one heat tube into a number of capillaries. This allows the heat transfer fluid condensed in the cooling body contact area to be returned to the housing contact area by capillary action. A separate active return of the condensed heat transfer fluid to the housing contact area is thus not necessary. This significantly simplifies the construction and operation of the cooling system. The use of a heat tube formed as a heat pipe allows, on the one hand, a high heat flow density in any direction and, on the other hand, an independent use of the condensed heat transfer fluid by gravity backflow. However, other configurations of the heat tube are also possible, as well as, if necessary, an actively controlled operation of the heat tube.

[0011] The at least one cooling body itself can be formed as a passively cooled component that releases the heat transferred from the housing to the at least one cooling body via the at least one heat pipe to the surrounding air, or can also be formed as an actively cooled component. In order to allow the heat to be transported out of the housing of the pump quickly, the at least one cooling body has a thermal conductivity that is as high as possible. In order to allow the heat to be transferred directly from the housing to the at least one cooling body in addition to the transfer of heat from the housing to the at least one cooling body via the at least one heat pipe, the at least one cooling body itself can be in contact with the housing or the housing wall in a cooling body contact area or can be formed integrally with the housing. In this way, the heat transfer and therefore the cooling efficiency can be improved. In another configuration, the cooling body can be arranged spatially separated from the housing. In this case, the heat is transferred to the cooling body only via the at least one heat pipe.

[0012] In addition to the configuration of the pump with only one heat pipe and only one cooling body, the invention also proposes variations in which several heat pipes connect the housing to one shared cooling body, or one heat pipe connects the housing to several cooling bodies, or several heat pipes connect the housing to several cooling bodies, so that the cooling of the pump and the cooling output required for it can be adapted to the requirements of the pump.

[0013] Optionally, it is further proposed that at least one cooling body comprises a cooling body block and a cooling rib arrangement having a plurality of cooling ribs arranged at a distance from each other, which are thermally conductively connected to the cooling body block, and the heat absorbed by the cooling body block is discharged to the surrounding air via the cooling ribs. The cooling body block and / or the cooling ribs may be manufactured from a material that conducts heat very well, such as a metal or a metal alloy, in particular aluminum and / or copper. Alternatively, the cooling body block and / or the cooling ribs may be manufactured from or coated with other materials or composite materials that transmit heat well. In particular, the cooling body block is formed in such a way that heat that is transferred to the cooling body block via at least one heat tube or directly to the cooling body block via the housing can be quickly absorbed. As a result, heat can be discharged again from the housing in the direction of the cooling body block.

[0014] For this reason, in order to transfer heat as efficiently as possible and further enhance it, the cooling body contact area of ​​at least one heat pipe may be directly bonded to the cooling body block by direct contact, or a thermally conductive paste that is highly thermally conductive may be coated between the two parts.

[0015] To improve the heat dissipation of the cooling body, a cooling rib arrangement can be arranged on the cooling body block. The cooling rib arrangement preferably comprises a number of cooling ribs arranged at a distance from one another, which can be configured, for example, as a number of plates arranged at a distance from one another. In order to be able to dissipate the heat transferred from the cooling body block to the cooling ribs to the ambient air by means of a large contact surface between the cooling ribs and the ambient air, it is particularly preferred that these cooling ribs or these plates have a volume as small as possible and at the same time a surface as large as possible. In this case, some or all of these cooling ribs may have an elongated tapered, deeply penetrating recess or may have a shape different from that of a plate.

[0016] To perform the heat transfer very efficiently, the heat transfer from the cooling body block to the cooling ribs may be improved by integrally forming the cooling body block and the cooling ribs, but alternatively, the cooling ribs may be thermally conductively coupled to the cooling body block by other suitable couplings.

[0017] If not of one-piece construction, a thermally conductive paste with high conductivity may be arranged between the cooling body block and the cooling rib in order to improve the thermally conductive bond between the cooling rib and the cooling body block. In another possible configuration, at least one heat tube may be arranged directly on the cooling rib in its cooling body contact area in order to bypass the cooling body block and to be able to dissipate heat directly to the cooling rib. In such a configuration, it may be advantageous for the at least one heat tube to be arranged on the cooling rib along its longitudinal direction in order to allow as wide a contact surface as possible between the at least one heat tube and the cooling rib.

[0018] This configuration of the cooling system is based on completely passive components, therefore the cooling of the pump can be carried out at low cost, very efficiently and quietly, since moving parts of the cooling system can be omitted.

[0019] Furthermore, according to the invention, it is proposed that an airflow generating device is arranged on the at least one cooling body, and an airflow can be generated by the airflow generating device in order to further cool the cooling ribs. Besides the above-mentioned completely passive cooling of the cooling ribs of the at least one cooling body (in which case the heat absorbed by the cooling ribs is released to the surrounding air and discharged by convection), it can also be proposed to actively cool the cooling ribs. For this, the airflow generated by the airflow generating device can be blown through the cooling ribs, which are thereby further cooled and which, in addition to the pure convection, also promotes the discharge of the heated surrounding air. For this, the airflow generating device can be configured as a blower arranged on the cooling ribs, which blows the generated airflow on or across a number of cooling ribs arranged at a distance from one another. This allows the cooling system to be arranged compactly in the smallest possible space, since fewer cooling ribs can be used by the additional active cooling. In another configuration, the airflow generating device can also be arranged at a distance with respect to the cooling body. In this case, an airflow may be blown onto the cooling ribs via one or more suitable air passages.

[0020] In a preferred embodiment of the invention, the cooling system has a water cooling device for cooling the cooling body contact area of ​​at least one heat pipe. In addition to the additional cooling of the cooling ribs by the airflow generator, the cooling system can also have a water cooling device. In this case, the heat of the cooling body contact area of ​​at least one heat pipe can be transferred by water or other fluids with high thermal conductivity that are in contact with this cooling body contact area or flowing along this cooling body contact area. The fluid thus heated can be transported in a circulation path. In this case, heating and cooling are alternately repeated.

[0021] The water cooling device can surround at least one heat pipe in part or in its entirety in the cooling body contact area as a pipe that partially envelops the heat pipe or as a pipe that is wrapped around the heat pipe and laid down. The water flowing in the pipe can absorb the heat of the at least one heat pipe along the contact area and can be exhausted from the at least one heat pipe. In this case, the pipe is preferably configured as a closed system in which the heated water is present in a circulation path system. The heated water can be exhausted and then cooled, possibly using another passive or active cooling, and then used again to cool the cooling body contact area of ​​the at least one heat pipe.

[0022] Furthermore, it is proposed as an option that at least one heat pipe is arranged in a cooling body recess of the cooling body block with a cooling body contact area and is thermally conductively connected to the cooling body block. By arranging the at least one heat pipe or its cooling body contact area in a cooling body recess of the cooling body block in such a way that the contact surface between the at least one heat pipe and the cooling body block is as large as possible, the more efficient the heat transfer can be achieved. The larger this contact area is, the more heat can be transferred between the two parts per unit of time. In this case, the at least one heat pipe may preferably have one or more curved portions, in order to be able to extend the contact area of ​​the at least one heat pipe even further. Alternatively or additionally, multiple heat pipes may be used, which are arranged in multiple cooling body recesses of the cooling body block, in order to transfer heat efficiently. Furthermore, it is also possible that at least one heat pipe is arranged in a cooling rib recess of the cooling rib. In this case, the absorbed heat can be transferred directly to one or more cooling ribs.

[0023] In order to make the contact surface between the at least one heat pipe and the cooling body block or between the at least one heat pipe and the cooling ribs as large as possible, the cooling body recess and / or the cooling rib recess can be adapted to the shape of the at least one heat pipe. Alternatively, the cooling body recess and / or the cooling rib recess can have a different shape than the at least one heat pipe. In both cases, in order to optimally transfer the heat, the cooling body recess and / or the cooling rib recess can be coated with a thermally conductive paste that conducts heat very well. Such a thermally conductive paste makes it possible that manufacturing tolerances can be compensated for, for example, in order to make the surface unevenness smaller, i.e. the contact area smaller, when the at least one heat pipe and the cooling body block are not formed integrally.

[0024] According to an embodiment of the invention, it is proposed that the cooling body contact area of ​​at least one heat tube is thermally conductively connected to a contact plate, the contact plate having a thermal conductivity of more than 200 W / m·K, in particular more than 300 W / m·K, the contact plate being cooled by an airflow generator or being connected to at least one cooling body. In order to form the contact area as beneficially as possible, i.e. to transfer heat as efficiently as possible, the cooling body contact area of ​​at least one heat tube can be connected to the contact plate or extended up to this contact plate. In order to allow an optimal transfer of heat from the at least one heat tube to the contact plate and finally an optimal release of heat from said contact plate, the contact plate is preferably made of a material such as aluminum, which conducts heat very well, particularly preferably of copper and / or silver and / or gold and / or alloys thereof. In order to make the connection very efficient, the at least one heat tube can also be made of the same material as the contact plate.

[0025] In order to further transfer the heat as efficiently as possible, the contact plate can preferably be configured as a flat plate having a surface against the cooling body or the airflow generator that is larger than the cooling body contact area of ​​the at least one heat tube. Here too, the bonding between the components can be improved by using a heat conductive paste and by a suitable coating. According to the configuration of the cooling body block where the at least one heat tube has at least one curved portion in its cooling body contact area, in order to increase the contact area of ​​both components, i.e. to improve the heat transfer, the cooling body contact area of ​​the at least one heat tube in the configuration with the contact plate can also have at least one curved portion.

[0026] It is proposed that the cooling ribs are optionally arranged parallel to the surface of the housing. A plurality of cooling ribs of the cooling rib device may be arranged on the cooling body block spaced apart from each other and parallel to the surface. In addition to arranging the individual cooling ribs on the cooling body block, the individual cooling ribs may be arranged parallel to and spaced apart from each other. In this case, the cooling ribs are connected to each other only via at least one heat tube so as to be supported by the at least one heat tube and arranged in a stacked manner in one direction.

[0027] According to an embodiment of the invention, it is proposed that the cooling ribs are arranged at an angle to the surface of the housing, which cooling ribs arranged at an angle to said surface can be very advantageously adapted to the reserved installation space or to the spatial conditions at the site provided for the pump.

[0028] Optionally, it is proposed that the pressure chamber intake pipe and / or the pressure chamber exhaust pipe run parallel to the cooling body block to the greatest extent possible and / or are partially embedded in this cooling body block. The arrangement of the pressure chamber intake pipe and / or the pressure chamber exhaust pipe running parallel to the cooling body block allows a large contact area with a constant and as small as possible distance between these pipes and the cooling body. In this large contact area, heat can be optimally exchanged between the two parts and therefore the pump itself can be cooled. This allows cooling of the pressure chamber intake pipe, in particular the pressure chamber exhaust pipe. In this case, the pressure chamber exhaust pipe generally has a higher temperature than the pressure chamber intake pipe due to the heat generated during compression of the fluid. It can therefore be advantageous for the pressure chamber exhaust pipe in particular to have a narrower distance to the cooling body block running parallel to the cooling body block as long as possible.

[0029] In this case, both tubes may be embedded in the housing of the pump, or may be located in a recess in the side of the housing facing the cooling body block, or may be located directly in the cooling body block. A closer spacing of these tubes relative to the cooling body block may allow a more effective heat transfer, i.e., more effective cooling. The greater the temperature difference between these tubes and the housing or the cooling body block, the more efficient the heat transfer may be.

[0030] According to the configuration of the present invention, it may be proposed that the pressure chamber intake pipe and / or the pressure chamber exhaust pipe extend parallel to the pressure chamber. With such an arrangement, efficient heat transfer may be possible due to the close proximity of these components and the resulting large contact area. Therefore, for efficient heat transfer, it may be beneficial for the pressure chamber intake pipe and / or the pressure chamber exhaust pipe to be arranged parallel to the pressure chamber and parallel to the cooling body block.

[0031] Optionally, it is proposed that the path of the at least one heat tube has at least one direction change section, so that the at least one heat tube has the longest possible contact area between the at least one heat tube and the cooling body block and / or between the at least one heat tube and the housing. The wider the contact surface between the at least one heat tube and the cooling body block or the housing, the more efficiently the heat of the housing can be transferred to the at least one heat tube and ultimately to the cooling body block. The configuration of the at least one heat tube with at least one direction change section, in particular with multiple direction change sections, allows such an expansion of the contact surface, in which the housing contact area and / or the cooling body contact area have the largest possible contact surface with the cooling body and / or the housing. For this reason, the at least one heat tube in both sections has a serpentine path, possibly with areas oriented parallel to each other. Furthermore, helical, zigzag and serpentine configurations of the path of the at least one heat tube with the widest possible surface and the widest possible contact area are also conceivable.

[0032] It is proposed that the cooling system preferably has at least two heat pipes, the respective cooling body contact areas of the at least two heat pipes being arranged on at least one cooling body from two opposite sides. The use of two or more heat pipes facilitates the cooling of the housing by discharging heat separately from the housing. In the housing, a quantity of heat can be discharged from the housing through each heat pipe without excessive load being applied to the heat pipes. By arranging a number of heat pipes on or in the cooling body from different sides, the heat can be distributed to the cooling block. In this case, the cooling block has only few areas with different temperatures and therefore absorbs and releases heat uniformly. This allows for as efficient and fast cooling as possible.

[0033] It is also possible, and is proposed as an option according to the invention, that the housing contact area of ​​the at least one heat tube is arranged parallel to the pressure chamber intake tube and / or the pressure chamber exhaust tube. Such a parallel arrangement with the narrowest possible distance between these tubes and the at least one heat tube can contribute to a more efficient heat dissipation. In particular, heat dissipated from the pressure chamber exhaust tube to the surrounding housing can then be dissipated to the at least one heat tube via the shortest possible path. In this case, the shorter the distance and the larger the common parallel path, the more heat can be transferred. In this case, the at least one heat tube can be arranged parallel to these tubes with the entire or part of its housing contact area. In this case, the at least one heat tube can be arranged helically around both tubes or around one of these tubes.

[0034] It is preferably proposed that the housing contact area of ​​at least one heat tube is arranged between the pressure chamber intake pipe and / or the pressure chamber exhaust pipe and the pressure chamber. Most of the heat during the operation of the pump is generated in or at the pressure chamber. In this case, this pressure chamber together with the pressure chamber exhaust pipe has the largest amount of heat and therefore the largest load. It can therefore be considered very beneficial for the housing contact area of ​​at least one heat tube to adjoin these areas as closely as possible with a large contact area. In this configuration of the cooling system, the housing contact area of ​​at least one heat tube can be arranged between the pressure chamber and the pressure chamber intake pipe and / or the pressure chamber exhaust pipe. In this case, the cooling body contact area of ​​at least one heat tube is arranged in the cooling body recess of the cooling body.

[0035] In a preferred configuration of the invention, it is proposed that the pump is a diaphragm pump. Particularly preferably, the cooling system of the invention can be used in a diaphragm pump, thus enabling the above-mentioned advantages.

[0036] Another preferred configuration of the pump having a cooling system will now be described on the basis of the embodiment shown in the drawings. [Brief description of the drawings]

[0037] [Figure 1] 1 shows an inventive configuration of a pump having a cooling system for cooling the pump housing and horizontally arranged heat pipes. [Diagram 2] 1 shows a configuration of the pump of the present invention with a vertical arrangement of the thermal tubes. [Diagram 3] 1 illustrates a pump configuration of the present invention having radially oriented heat tubes. [Figure 4] 1 shows a pump configuration of the present invention having a housing contact area formed around a curve of the thermal tube. [Diagram 5] 1 shows the configuration of the housing contact area formed as a serpentine of the heat tube. [Figure 6] 1 shows a pump configuration, where multiple thermal tubes are placed into the cooling body from opposite sides. [Figure 7] 13 shows variations in the configuration of the housing contact area of ​​the heat tube in the circular recess. [Figure 8] 13 shows variations in the configuration of the housing contact area of ​​the heat tube within the semicircular recess. [Figure 9] 13 shows variations in the configuration of the housing contact area of ​​the heat tube in the rectangular recess. [Figure 10] 13 shows another configuration variation of the housing contact area of ​​the heat tube in the rectangular recess. [Figure 11] 1 shows the arrangement of the housing contact areas of the pressure chamber housing contact areas. [Figure 12] 1 shows the arrangement of housing contact areas in the pressure chamber housing area in contact with the contact surface for the inter-pressure chamber area. [Figure 13] 4 shows the arrangement of the housing contact area between the pressure chamber housing region and the pressure chamber tube region. [Figure 14] 1 shows the arrangement of housing contact areas in the pressure chamber tube region that contact the contact surface against the pressure chamber housing region. [Figure 15] 1 shows a configuration of a heat tube having contact plates disposed on each of the housing contact area and the cooling body contact area of ​​the heat tube. [Figure 16]1 shows the arrangement of the cooling body contact area in the pressure chamber tube area adjacent to the contact surface for the cooling body. [Figure 17] 13 shows the arrangement of the cooling body contact area between the pressure chamber tube area and the cooling body. [Figure 18] 13 shows the arrangement of the cooling body contact area within the cooling body adjacent the contact surface for the pressure chamber tube area. [Figure 19] 1 shows the arrangement of the cooling body contact area in the pressure chamber tube region, which is formed integrally with the cooling body. [Figure 20] 1 shows the arrangement of cooling body contact areas of the cooling body. [Figure 21] 1 shows the configuration of the cooling body contact area with the contact plate. [Figure 22] 21 shows another variation of the arrangement according to FIG. 20 with a cooling body. [Diagram 23] 21 shows a variation of the arrangement according to FIG. 20 with an airflow generator. [Figure 24] 1 shows a variation of the configuration of a pump having a cooling body and an airflow generating device disposed in the cooling body. [Diagram 25] 1 shows a variation in the configuration of the cooling body contact area with the water cooling device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] In FIG. 1, the inventive configuration of a portion of a region of a pump 1 with a cooling system constructed according to the invention is shown. In this figure, for the sake of clarity, some components are shown in dashed lines, which are made of non-permeable materials, such as metal. The pump 1 is used to convey a fluid by this pump 1. In this case, only a small area of ​​the pressure chamber 2 through which the fluid is conveyed is shown. The cooling system removes heat generated by the operation of the pump 1 from the pump 1, thereby cooling the pump 1 and the fluid conveyed by this pump 1. If the configuration of the pump 1 is similar, the inventive cooling of the pump 1 and the fluid conveyed by this pump 1 allows the fluid to be conveyed at a higher volumetric flow rate at the same operating temperature of the pump 1.

[0039] The pump 1 comprises a housing 3, which defines the boundary of a pressure chamber 2 and has a pressure chamber intake pipe 4 and a pressure chamber exhaust pipe. In this case, only a part of the pressure chamber 2 is shown in FIG. 1 and the following figures. Via the pressure chamber intake pipe 4, which is connected to the intake of the pressure chamber 2, the fluid to be conveyed flows through the intake into the pressure chamber 2, is pressurized in this pressure chamber 2 by a displacement part not shown, and is subsequently exhausted through an exhaust into the pressure chamber exhaust pipe 5. In this case, the housing 3 can be divided into two adjacent areas with different paths of the pressure chamber intake pipe 4 and the pressure chamber exhaust pipe 5. In the piping area 6, the pressure chamber intake pipe 4 and the pressure chamber exhaust pipe 5 have paths that extend over the pressure chamber 2 in order to reach the pressure chamber 2 as space-saving as possible and to allow installation space as close as possible to the pressure chamber 2 for the other components of the cooling system. In the ventilation area 7, the pressure chamber intake pipe 4 and the pressure chamber exhaust pipe 5 extend approximately perpendicularly to the surface adjacent to the pressure chamber 2 and lead to the pressure chamber 2 at a distance from each other. The generally vertical path within the ventilation area 7 may reduce undesirable heat absorption from the heated pressure chamber 2 into the pressure chamber inlet pipe 4 and pressure chamber exhaust pipe 5 during operation.

[0040] Furthermore, a cooling body 8 is arranged in the housing 3 so as to be adjacent to the piping area 6. The cooling body 8 comprises a cooling body block 9 as a block with high thermal conductivity, which is thermally conductively connected to the housing 3. A cooling rib device 10 is arranged on the side of the cooling body block 9, which faces away from the housing 3, and has a number of cooling ribs 11 formed as a number of plates, which are integrally formed with the cooling body block 9. In this case, the cooling ribs 11 are arranged parallel to each other and perpendicular to the housing 3. During operation of the pump 1, most of the heat is generated in the pressure chamber 2 and also in the pressure chamber exhaust pipe 5 due to the compression of the fluid to be conveyed and the simultaneous heating. This heat is transferred via the housing 3 to the cooling body block 9 arranged in the housing 3 and finally to the individual cooling ribs 11. By configuring the cooling ribs 11 as a number of plates with the smallest possible volume and the largest possible surface area, the heat of the cooling ribs 11 can be efficiently transferred to the ambient air surrounding the cooling ribs 11.

[0041] In order to make the heat transfer between the housing 3 and the cooling ribs 11 more efficient, the cooling system comprises a number of heat tubes 12 with a housing contact area 13 and a cooling body contact area 14 arranged at a distance from the housing contact area 13. In this case, the heat tubes 12 are configured as heat pipes 15. In this case, the heat pipes 15 are configured as tubes with a circular cross section. In this case, other cross sections, such as elliptical or flat, are also conceivable. In the inner space of the tube, which is sealed, a number of capillaries and a heat carrier fluid with high thermal conductivity are arranged. In the housing contact area 13, the liquid heat carrier fluid is heated at the housing contact area 13 and partly passes into the gas phase. The gaseous heat carrier fluid diffuses in the entire inner space of the heat tubes 12 and condenses at the cooling body contact area 14 while releasing the heat of the heat carrier fluid to the cooling body 8, thereby returning the heat carrier fluid to its liquid state. The liquid heat carrier fluid passes through the capillary from the cooling body contact area 14 back to the housing contact area 13 .

[0042] The housing contact area 13 of each heat pipe 15 in the recess of the housing 3 is arranged between the pressure chamber 2 and the pressure chamber inlet pipe 4 or the pressure chamber exhaust pipe 5, and runs parallel and perpendicular to the pipes 4, 5. By arranging the housing contact area 13 close to the pressure chamber inlet pipe 4 and the pressure chamber exhaust pipe 5 and the pressure chamber 2, the heat is directly absorbed by the heat pipe 15 at its generation point and efficiently dissipated. The heat pipe 15 is arranged in the cooling body recess of the cooling body 8 at the cooling body contact area 14, and runs parallel to the contact surface of the cooling body 8 with the housing 3 and parallel to the housing contact area 13 of the heat pipe 15. Furthermore, all four heat pipes 15 shown in FIG. 1 are formed parallel, spaced apart from each other and identical to each other.

[0043] In the following figures, comparable configurations of the pump 1 with the cooling system are shown in different configurations, where only the important differences of the individual variants shown in the figures are described.

[0044] Figures 2 and 3 each show a different configuration of the inventive arrangement of heat pipes 15. In Figure 2, the heat pipes 15 are arranged as vertical tubes at right angles to the surface of the housing 3. In this case, the housing contact areas 13 of these heat pipes 15 are arranged in the housing 3. Furthermore, the cooling body 8 does not have a cooling body block 9, but is configured as a number of plates in which the individual cooling ribs 11 are arranged at a distance from one another in a stack. Each of these plates is arranged parallel to the housing 3 and is connected to one another only via the individual heat pipes 15 to the housing 3.

[0045] 3 shows a variant with radially extending heat pipes 15. In this case, the heat pipes 15 are arranged in the pressure chamber ventilation area 7 so that they extend radially in the housing contact area 13. In this way, the heat generated in the pressure chamber 2 and in the exhaust port can be very well dissipated. Furthermore, cooling ribs 11 are formed integrally in the housing 3.

[0046] Figures 4 and 5 each show, in addition to the linear configuration of the housing contact area 13 according to Figure 1 or 2, another configuration of this housing contact area 13 as a curved member or in the form of a serpentine or another configuration of the path of the heat pipe 15 in this housing contact area 13.

[0047] Figure 6 shows another configuration of the heat pipe 15 according to Figure 1. In this case, a number of heat pipes 15 contact a number of cooling ribs 11 from two mutually opposite sides and pass through these cooling ribs 11.

[0048] Each of the following figures 7 to 10 shows different configuration possibilities of the arrangement of the heat pipes 15 in the differently formed recesses of the housing 3. While the recesses of figures 7 and 9 as well as 10 are adapted to the arrangement of heat pipes 15 having a circular cross section or to a rectangular cross section, each of the heat pipes 15 contacting the recesses 16 flush, figure 8 shows another configuration possibility. In this case, the pressure chamber ventilation area 7 and the pressure chamber piping area 6 of the housing 3 are manufactured separately from each other, and the heat pipes 15 formed with a circular cross section are arranged in the semicircular recesses 16 of the pressure chamber ventilation area 7.

[0049] Each of the figures 11-15 shows a different arrangement of the housing contact area 13 of the housing 3. Figure 11 shows an arrangement of the housing contact area 13 in the pressure chamber ventilation area 7 parallel to the pressure chamber intake pipe 4 and the pressure chamber exhaust pipe 5, while Figure 12 shows an arrangement in the pressure chamber ventilation area 7 in contact with the contact surface to the pressure chamber piping area 6. Figure 13 shows an arrangement of the housing contact area 13 between the pressure chamber piping area 6 and the pressure chamber ventilation area 7, while Figure 14 shows an arrangement in the pressure chamber piping area 6 in contact with the contact surface to the pressure chamber ventilation area 7. Figure 15 shows a variation of the arrangement in which the housing contact area 13 of the heat pipe 15 is coupled to a contact plate 17. Furthermore, the cooling body contact area 14 also has a contact plate 17 coupled thereto. The large surface area of ​​such a contact plate 17 allows efficient heat transfer between the housing 3 and the heat pipe 15 or between the heat pipe 15 and the ambient air.

[0050] In each of the figures 16 to 21 different configurations of the arrangement of the cooling body contact area 14 are shown. The cooling body contact area 14 of the heat pipe 15 is arranged completely in the pressure chamber piping area 6 in contact with the contact surface against the cooling body 8 in the case of the variation according to figure 16, while the cooling body contact area 14 is arranged between the pressure chamber piping area 6 and the cooling body 8 in the case of the variation shown in figure 17. Figure 18 shows the arrangement of the cooling body contact area 14 in the cooling body recess of the cooling body 8 near the contact surface against the pressure chamber piping area 6. In figure 19 the cooling rib 11 of the cooling body 8 is formed integrally with the housing 3. In this case the cooling body contact area 14 is arranged in the recess of the cooling rib 11. Figure 20 also shows the arrangement of the cooling body contact area 14 of the heat pipe 15 in the cooling rib 11. In this case in this variation of the configuration the cooling rib 11 and the cooling body block 9 are arranged in the housing 3. Figure 21 shows a variation of the configuration in which the cooling body contact area 14 of the heat pipe 15 is connected to a contact plate 17.

[0051] Furthermore, figures 22-25 show different alternative configuration possibilities of the pump 1 with a cooling system in order to further increase the cooling efficiency. Figure 22 shows a variation of the configuration according to figure 21. In this case, the cooling body 8 is arranged on the contact plate 17. Figure 23 shows another possible configuration according to figure 21, in which an airflow generator 18 is arranged on the contact plate 17 as a fan. An airflow can be generated by this fan, which is directed towards the contact plate 17 for further cooling. Figure 24 shows a configuration in which the airflow generator 18 is arranged on the cooling body 8. In this case, the cooling ribs 11 are cooled by the generated airflow. Figure 25 shows a water-cooled water-cooling device, which is arranged to cool the cooling body contact area 14 of the heat pipe 15. [Explanation of symbols]

[0052] 1 Pump 2. Pressure chamber 3. Housing 4 Pressure chamber intake pipe 5 Pressure chamber exhaust pipe 6 Pressure chamber piping area 7 Pressure chamber ventilation area 8 Cooling unit 9 Cooling body block 10 Cooling Rib Device 11 Cooling rib 12 heat tube 13 Housing Contact Area 14 Cooling body contact area 15 Heat Pipe 16 Heat pipe recess 17 Contact plate 18 Airflow Generator 19 Water cooling system

Claims

1. The pump (1) has a housing (3) that surrounds a pressure chamber (2) and a cooling system for cooling this housing (3) of the pump (1), The pump (1) has a pressure chamber intake pipe (4) and a pressure chamber exhaust pipe (5) that lead to the pressure chamber (2), In a pump (1) in which a fluid flowing into the pressure chamber (2) via the pressure chamber intake pipe (4) can be pressurized by a displaceable part arranged in the pressure chamber (2) and can be discharged from the pressure chamber (2) via the pressure chamber exhaust pipe (5), The cooling system comprises at least one heat tube (12) having a heat transfer fluid and at least one cooling body (8), The at least one heat tube (12) has a housing contact region (13) for making the heat tube (12) heat conduction contact with the housing (3), and a cooling body contact region (14) which is spaced apart from the housing contact region (13) for making the heat tube (12) heat conduction contact with the at least one cooling body (8), A pump (1) characterized in that the heat of the housing (3) is transferred from the housing (3) to the at least one cooling body (8) via the at least one heat tube (12) when the cooling system is in the intended use.

2. The at least one cooling body (8) comprises a cooling body block (9) and a cooling rib device (10) having a plurality of cooling ribs (11) spaced apart from each other and heat-conductively coupled to the cooling body block (9), The pump (1) according to claim 1, characterized in that the heat absorbed by the cooling body block (9) is released into the surrounding air via the cooling ribs (11).

3. The airflow generator (18) is located on the at least one cooling body (8), The pump (1) according to claim 1, characterized in that an airflow can be generated by the airflow generator (18) to further cool the cooling rib (11).

4. The pump (1) according to claim 1, characterized in that the cooling system has a water cooling device (19) for cooling the cooling body contact area (14) of the at least one heat tube (12).

5. The pump (1) according to claim 1, characterized in that at least one heat tube (12) is positioned in the cooling body recess of the cooling body block (9) in the cooling body contact region (14) and is thermally conductively coupled to the cooling body block (9).

6. The cooling body contact region (14) of at least one heat tube (12) is heat-conductively coupled to the contact plate (17), The contact plate (17) has a thermal conductivity higher than 200 W / m·K, and in particular a thermal conductivity higher than 300 W / m·K. The pump (1) according to claim 1, characterized in that the contact plate (17) can be cooled by an airflow generator (18) or is coupled to the at least one cooling body (8).

7. The pump (1) according to claim 2, characterized in that the cooling ribs (11) are arranged parallel to the surface of the housing (3).

8. The pump (1) according to claim 2, wherein the cooling rib (11) is arranged at an angle to the surface of the housing (3).

9. The pump (1) according to claim 1, characterized in that the pressure chamber intake pipe (4) and / or the pressure chamber exhaust pipe (5) extend parallel to the cooling body block (9) to the greatest extent possible and / or are partially embedded in the cooling body block (9).

10. The pump (1) according to claim 1, characterized in that the pressure chamber intake pipe (4) and / or the pressure chamber exhaust pipe (5) extend parallel to the pressure chamber (2).

11. The pump (1) according to claim 1, characterized in that the path of the at least one heat tube (12) has at least one direction-changing portion such that the at least one heat tube (12) has the longest possible contact area between the at least one heat tube (12) and the cooling body block (9) and / or between the at least one heat tube (12) and the housing (3).

12. The cooling system has at least two heat tubes (12), The pump (1) according to claim 1, characterized in that the cooling body contact areas (14) of each of the at least two heat tubes (12) are arranged on the at least one cooling body (8) from two opposing sides.

13. The pump (1) according to claim 1, characterized in that the housing contact region (13) of at least one heat tube (12) is arranged parallel to the pressure chamber intake pipe (4) and / or the pressure chamber exhaust pipe (5).

14. The pump (1) according to claim 1, characterized in that the housing contact region (13) of at least one heat tube (12) is located between the pressure chamber intake pipe (4) and / or the pressure chamber exhaust pipe (5) and the pressure chamber (2).

15. The pump (1) according to claim 1 is characterized in that the pump (1) is a diaphragm pump.

16. A pump (1) having a housing (3) surrounding a pressure chamber (2) and a cooling system for cooling the housing (3) of the pump (1), The pump (1) has a pressure chamber intake pipe (4) and a pressure chamber exhaust pipe (5) that lead to the pressure chamber (2), The fluid flowing into the pressure chamber (2) via the pressure chamber intake pipe (4) can be pressurized by a displaceable part arranged in the pressure chamber (2), and can be discharged from the pressure chamber (2) via the pressure chamber exhaust pipe (5). The cooling system comprises at least one heat tube (12) having a heat transfer fluid and at least one cooling body (8), The at least one heat tube (12) has a housing contact region (13) for making the heat tube (12) heat conduction contact with the housing (3), and a cooling body contact region (14) which is spaced apart from the housing contact region (13) for making the heat tube (12) heat conduction contact with the at least one cooling body (8), The heat from the housing (3) is transferred from the housing (3) to the at least one cooling body (8) via the at least one heat tube (12) when the cooling system is in its intended use. The cooling body (8) has a cooling body block (9) which is a block with high thermal conductivity that is thermally bonded to the housing (3), and a cooling rib device (10) which is integrally formed and has a plurality of cooling ribs (11) formed as a plurality of plates. The cooling rib device (10) is positioned to the side of the cooling main body block (9) facing away from the housing (3), The pressure chamber intake pipe (4) and the pressure chamber exhaust pipe (5) extend parallel to each other in the pump (1), In the pressure chamber piping region (6), the pressure chamber intake pipe (4) and the pressure chamber exhaust pipe (5) have paths that pass through the pressure chamber (2), and in the pressure chamber ventilation region (7), the pressure chamber intake pipe (4) and the pressure chamber exhaust pipe (5) extend substantially perpendicular to adjacent surfaces of the pressure chamber (2), spaced apart from each other, and pass through the pressure chamber (2). The pressure chamber intake pipe (4) and the pressure chamber exhaust pipe (5) extend parallel to the cooling body block (9) of the cooling body (8) within the largest possible range in the pressure chamber piping area (6), and / or are partially embedded in the cooling body block (9). The pump (1) is characterized in that the pressure chamber intake pipe (4) and the pressure chamber exhaust pipe (5) are spaced as narrowly as possible relative to the cooling body block (9) for efficient cooling.

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