TWI720027B - Compact electrohydraulic assembly with cooling - Google Patents

Compact electrohydraulic assembly with cooling Download PDF

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Publication number
TWI720027B
TWI720027B TW105131622A TW105131622A TWI720027B TW I720027 B TWI720027 B TW I720027B TW 105131622 A TW105131622 A TW 105131622A TW 105131622 A TW105131622 A TW 105131622A TW I720027 B TWI720027 B TW I720027B
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Taiwan
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cooling
cooling plate
plate
pressure medium
heat pipe
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TW105131622A
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Chinese (zh)
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TW201725835A (en
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安德烈亞斯 均德爾
索恩 史托爾
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德商羅伯特博斯奇股份有限公司
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • 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
    • 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
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/225—Heat pipes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

A disclosure is made of a compact electrohydraulic assembly， the pressure medium of which， which flows back into a tank， and the electric motor of which， which drives a pump， are cooled by means of a common cooling device. According to a first variant， a coolant line is provided and， according to a second variant， heat pipes are provided， which transfer the heat from the pressure medium and the electric motor to a cooling plate.

Description

具有冷卻的緊密電動液壓總成 Compact electro-hydraulic assembly with cooling

本發明係關於一種根據專利申請專利範圍第1項之前序部分之具有冷卻的緊密總成。 The present invention relates to a compact assembly with cooling according to the preamble of the first item of the scope of the patent application.

先前技術揭示藉助於由電馬達及泵形成之驅動單元將液壓油自槽輸送至液壓系統之總成。藉由總成供應之液壓系統具有載荷，例如機械工具之液壓缸及控制閥。 The prior art discloses an assembly that transports hydraulic oil from a tank to a hydraulic system by means of a drive unit formed by an electric motor and a pump. The hydraulic system supplied by the assembly has loads, such as hydraulic cylinders and control valves of machine tools.

此類總成由於大功率密度及其效率不得不被冷卻。針對冷卻之其他原因在於，各種液壓部件具有約60-80℃之最高允許溫度，以及在於液壓油之老化隨升高的溫度而增加。 Such assemblies have to be cooled due to their high power density and efficiency. Other reasons for cooling are that various hydraulic components have a maximum allowable temperature of about 60-80°C, and that the aging of hydraulic oil increases with increasing temperature.

一個已知實踐在此係用來在返回線路中籍由油/空氣熱交換器實現自液壓系統至槽之冷卻。與此有關之缺點在於，由於自油/空氣熱交換器至環境之高熱阻力(首先歸咎於空氣之低熱容量及熱導率)，以及由於歸咎於液壓油之最大溫度對最大溫差之限制，油/空氣熱交換器之冷卻效能僅在低冷卻能力(<10kW)下為經濟的，因為否則油/空氣熱交換器之冷卻表面不得不製造得極大。 A known practice here is to use an oil/air heat exchanger in the return line to cool from the hydraulic system to the tank. The disadvantages related to this are that due to the high thermal resistance from the oil/air heat exchanger to the environment (first due to the low heat capacity and thermal conductivity of the air), and due to the limitation of the maximum temperature difference due to the maximum temperature of the hydraulic oil, the oil The cooling efficiency of the air heat exchanger is only economical under low cooling capacity (<10kW), because otherwise the cooling surface of the oil/air heat exchanger has to be made extremely large.

就此點而言，先前技術之一個已知實踐為例如針對將要藉助於受變速電馬達驅動之外齒輪泵自槽輸送之壓力介質。在泵之出口側上， 壓力介質可經由限制器得以分流，該限制器亦可用來設置泵之最小速度。經由限制器分流之壓力介質將熱量經由油/空氣熱交換器散至環境，該油/空氣熱交換器藉由來自風扇之空氣另外地受到冷卻。另外，來自泵之滲漏可供應至油/空氣熱交換器。在此之缺點在於，限制器導致液壓損失，繼而導致廢熱。此外，經過油/空氣熱交換器之體積流量不利地取決於泵出口側上之系統壓力，且因此壓力介質之冷卻非恆定。另外，壓力介質之此種冷卻僅在泵之操作期間為可能的。 In this regard, a known practice of the prior art is, for example, for a pressure medium to be transported from a tank by means of an external gear pump driven by a variable speed electric motor. On the outlet side of the pump, The pressure medium can be diverted through a limiter, which can also be used to set the minimum speed of the pump. The pressure medium diverted by the restrictor dissipates heat to the environment via the oil/air heat exchanger, which is additionally cooled by the air from the fan. In addition, leakage from the pump can be supplied to the oil/air heat exchanger. The disadvantage here is that the restrictor causes hydraulic loss, which in turn leads to waste heat. In addition, the volume flow through the oil/air heat exchanger is disadvantageously dependent on the system pressure on the outlet side of the pump, and therefore the cooling of the pressure medium is not constant. In addition, such cooling of the pressure medium is only possible during the operation of the pump.

先前技術之另一已知實踐係用來藉助於兩個泵(雙泵)自槽輸送壓力介質，該兩個泵藉由變速電馬達共同地受驅動。在此佈置中，泵中之一者可輸送用於冷卻迴路之體積流量。在此之缺點在於，由此需要冷卻額外的泵，從而導致在設備上的較高費用。管路上之費用亦很高，因此滲漏風險進一步提高。此外，失敗概率可因使用雙泵而增大，因為經驗表示，泵為總成或液壓系統中受磨損嚴重影響之部件中之一者。此外，額外泵導致液壓損失，且因此導致額外熱應力。因為該等泵耦接至彼此，所以冷卻迴路之體積流量取決於第一泵之一次迴路之體積流量。此外，冷卻同樣僅在泵之操作期間不利地出現。 Another known practice of the prior art is to transport the pressure medium from the tank by means of two pumps (dual pumps), which are jointly driven by a variable speed electric motor. In this arrangement, one of the pumps can deliver the volume flow for the cooling circuit. The disadvantage here is that additional pumps need to be cooled, which results in higher equipment costs. The cost of the pipeline is also high, so the risk of leakage is further increased. In addition, the probability of failure can be increased by the use of dual pumps, because experience shows that the pump is one of the components that are severely affected by wear in the assembly or hydraulic system. In addition, additional pumps cause hydraulic loss and therefore additional thermal stress. Because the pumps are coupled to each other, the volume flow of the cooling circuit depends on the volume flow of the primary circuit of the first pump. In addition, cooling also occurs disadvantageously only during the operation of the pump.

作為對此之偏離，代替油/熱交換器而使用油/水熱交換器為已知的。由於低熱阻力，此冷卻概念具有高冷卻能力。與此相關之缺點在於，在一些環境中，有必要設定複雜水冷卻迴路，其中最大冷卻能力同樣受限於油之最大溫度。此外，為液壓系統所吸收之熱能量必須通常另外地藉助於水/空氣熱交換器散至環境。 As a deviation from this, it is known to use an oil/water heat exchanger instead of an oil/water heat exchanger. Due to the low thermal resistance, this cooling concept has a high cooling capacity. The related disadvantage is that in some environments, it is necessary to set up a complicated water cooling circuit, where the maximum cooling capacity is also limited by the maximum temperature of the oil. In addition, the thermal energy absorbed by the hydraulic system must usually be additionally dissipated to the environment by means of a water/air heat exchanger.

相比之下，本發明之根本目標係提供一種緊密總成，其中無關泵操作狀態之有效冷卻籍由在設備上之最小開支而變為可能。 In contrast, the fundamental goal of the present invention is to provide a compact assembly in which effective cooling irrespective of the operating state of the pump is made possible with minimal expenditure on equipment.

此目標藉由具有專利申請專利範圍第1項之特徵的緊密總成來達成。 This goal is achieved by a compact assembly with the features of the first item in the scope of the patent application.

所主張之緊密電動液壓總成具有驅動單元，該驅動單元具有電馬達及液壓靜力泵，其中壓力介質藉助於泵自緊密總成之槽吸入。根據本發明，冷卻裝置經提供來冷卻壓力介質，該冷卻裝置之至少一節段延伸至槽之內部空間中，以便在該內部空間中冷卻返流中或已返流之壓力介質。槽之內部空間應取含有流體之空間之意。 The claimed compact electro-hydraulic assembly has a drive unit with an electric motor and a hydrostatic pump, wherein the pressure medium is sucked in from the groove of the compact assembly by means of the pump. According to the present invention, the cooling device is provided to cool the pressure medium, and at least one section of the cooling device extends into the internal space of the tank so as to cool the pressure medium that is flowing back or has flowed back in the internal space. The internal space of the tank should take the meaning of space containing fluid.

本發明之其他有利實施例描述於從屬專利申請專利範圍中。 Other advantageous embodiments of the invention are described in the scope of the dependent patent applications.

冷卻裝置亦較佳地用來冷卻電馬達，且為達此目的，與電馬達處於熱傳導中。 The cooling device is also preferably used to cool the electric motor, and for this purpose, it is in heat conduction with the electric motor.

在第一基本變型中，冷卻裝置具有冷卻劑線路，特別為軟管或彎管，其中該冷卻劑線路之節段佈置在槽之內部空間中，以便自其中之壓力介質吸收廢熱。冷卻劑線路之節段此外亦與電馬達處於熱傳導連接中。 In the first basic variant, the cooling device has a coolant circuit, in particular a hose or elbow, wherein the segments of the coolant circuit are arranged in the internal space of the tank in order to absorb waste heat from the pressure medium therein. The segments of the coolant circuit are also in thermal connection with the electric motor.

在此較佳為以下情形：槽藉由蓋件閉合，其中驅動單元緊固於該蓋件上。然後，可將驅動單元及槽佈置在蓋件之相同的第一側、特別為下側上，從而槽包圍驅動單元且減小驅動單元之噪聲發射。 Here, it is preferably the following situation: the slot is closed by the cover, wherein the drive unit is fastened to the cover. Then, the drive unit and the groove can be arranged on the same first side, especially the lower side, of the cover, so that the groove surrounds the drive unit and reduces the noise emission of the drive unit.

根據改進，存在一熱沈佈置在蓋件之背向槽之第二側、特別為頂側上，其中用於電馬達之頻率轉換器以熱傳導方式緊固於該熱沈上，其中熱沈與冷卻劑線路處於熱傳導連接中。在此佈置中，冷卻劑線路較佳地穿過熱沈。 According to an improvement, there is a heat sink arranged on the second side of the cover facing away from the groove, in particular the top side, wherein the frequency converter for the electric motor is fastened to the heat sink in a thermally conductive manner, wherein the heat sink and The coolant circuit is in a thermally conductive connection. In this arrangement, the coolant line preferably passes through the heat sink.

在第一基本變型之特別有效實施例中，冷卻劑線路以此種方式佈置，以至流過其之冷卻劑首先冷卻壓力介質，然後冷卻電馬達，且最終冷卻熱沈，因此以及冷卻頻率轉換器。 In a particularly effective embodiment of the first basic variant, the coolant circuit is arranged in such a way that the coolant flowing through it first cools the pressure medium, then the electric motor, and finally the heat sink, and therefore the frequency converter .

在第二基本變型中，冷卻裝置具有冷卻板，其中槽藉由該冷卻板閉合，且驅動單元緊固於該冷卻板上。驅動單元及槽較佳地佈置於冷卻板之第一側、特別為下側上。然後，槽可包圍驅動單元且減小其噪聲發射。根據第二基本變型，冷卻裝置進而具有至少一個「壓力介質熱管」，該至少一個壓力介質熱管用來冷卻壓力介質且自槽之內部空間延伸至冷卻板。壓力介質熱管以熱傳導方式緊固於冷卻板上，以便將其熱量轉移至該板，或該壓力介質熱管穿過冷卻板，以便例如將其熱量亦散至佈置在冷卻板之第二側上、特別為頂側之另一裝置。 In the second basic variant, the cooling device has a cooling plate, wherein the groove is closed by the cooling plate, and the driving unit is fastened to the cooling plate. The drive unit and the groove are preferably arranged on the first side, in particular the lower side, of the cooling plate. Then, the groove can surround the driving unit and reduce its noise emission. According to the second basic variant, the cooling device further has at least one “pressure medium heat pipe”, which is used to cool the pressure medium and extends from the inner space of the tank to the cooling plate. The pressure medium heat pipe is fastened to the cooling plate by heat conduction in order to transfer its heat to the plate, or the pressure medium heat pipe passes through the cooling plate, for example, to dissipate its heat to the second side of the cooling plate, Especially the other device on the top side.

為改良自壓力介質至壓力介質熱管之熱傳遞，特別較佳之情形為，至少一個多板式總成提供在槽中，該多板式總成以熱傳導方式緊固於壓力介質熱管上。壓力介質經由多板式總成返回至槽。 In order to improve the heat transfer from the pressure medium to the pressure medium heat pipe, it is particularly preferable that at least one multi-plate assembly is provided in the groove, and the multi-plate assembly is fastened to the pressure medium heat pipe by heat conduction. The pressure medium is returned to the tank via the multi-plate assembly.

在改進中，空氣冷卻系統提供用於壓力介質，根據該壓力介質，壓力介質熱管穿過冷卻板且以熱傳導方式連接至另一多板式總成，該另一多板式總成佈置在冷卻板之背向槽之第二側、特別為該板之頂側上。 In an improvement, the air cooling system is provided for pressure medium, according to which the pressure medium heat pipe passes through the cooling plate and is connected to another multi-plate assembly in a thermally conductive manner, and the other multi-plate assembly is arranged between the cooling plates. On the second side facing away from the groove, in particular on the top side of the plate.

冷卻裝置較佳地亦具有至少一個「馬達熱管」，該馬達熱管用來冷卻電馬達且自電馬達在冷卻板之方向上延伸。馬達熱管亦以熱傳導方式緊固於冷卻板上，以便將其熱量轉移至冷卻板，或該馬達熱管穿過冷卻板，以便例如亦將其熱量散至另一裝置，該另一裝置佈置在冷卻板之第二側面、特別為頂側上。 The cooling device preferably also has at least one "motor heat pipe", which is used to cool the electric motor and extends from the electric motor in the direction of the cooling plate. The motor heat pipe is also fastened to the cooling plate by heat conduction in order to transfer its heat to the cooling plate, or the motor heat pipe passes through the cooling plate, so as to also dissipate its heat to another device, which is arranged in the cooling plate. The second side of the board, especially the top side.

為優化自電馬達至馬達熱管之熱傳遞，該管可以熱傳導方式***電馬達之外殼中。 In order to optimize the heat transfer from the electric motor to the motor heat pipe, the pipe can be inserted into the housing of the electric motor in a thermally conductive manner.

在改進中，空氣冷卻系統提供用於電馬達，根據該電馬達，馬達熱管穿過冷卻板且以熱傳導方式連接至另一多板式總成，該另一多板式總成佈置在冷卻板之背向槽之第二側、特別為該板之頂側上。 In an improvement, an air cooling system is provided for an electric motor. According to the electric motor, the motor heat pipe passes through the cooling plate and is thermally connected to another multi-plate assembly, which is arranged on the back of the cooling plate. On the second side of the groove, especially on the top side of the plate.

若至少一個支承表面或至少一個支承裝置(例如底座)佈置為相鄰於槽之背向該冷卻板之(下部)區域或在該區域上，該表面或裝置界定緊密總成之支承平面，則特別較佳之情形為，熱管佈置為大致上垂直於該支承表面。垂直佈置優化熱管之熱傳遞能力。 If at least one supporting surface or at least one supporting device (such as a base) is arranged adjacent to or on the (lower) area of the tank facing away from the cooling plate, the surface or device defines the supporting plane of the compact assembly, then It is particularly preferred that the heat pipe is arranged substantially perpendicular to the supporting surface. The vertical arrangement optimizes the heat transfer capacity of the heat pipe.

若電馬達經電供應且藉助於頻率轉換器受控，則在第二基本變型中特別較佳之情形為，該轉換器以熱傳導方式緊固於冷卻板之背向槽之第二側面、特別為該板之頂側上。 If the electric motor is supplied with electricity and controlled by means of a frequency converter, it is particularly preferred in the second basic variant that the converter is fastened thermally to the second side of the cooling plate facing away from the groove, especially On the top side of the board.

在改進中，液冷卻系統提供用於壓力介質及電馬達且視需要用於頻率轉換器，根據該頻率轉換器，冷卻通道提供在冷卻板中。 In the improvement, a liquid cooling system is provided for the pressure medium and the electric motor and as needed for the frequency converter, according to the frequency converter, the cooling channel is provided in the cooling plate.

在液冷卻系統之改進中，冷卻通道沿頻率轉換器與冷卻板之間的接觸區域延伸且形成用於壓力介質之返回線路之節段。 In the improvement of the liquid cooling system, the cooling channel extends along the contact area between the frequency converter and the cooling plate and forms a section of the return line for the pressure medium.

在水冷卻系統之較佳實施例中，該冷卻系統具有入口接頭，其中冷卻通道之第一節段自該入口接頭特別地沿冷卻板之外圓周延伸至冷卻板之外部區域中，且具有冷卻通道之第二節段，該第二節段連接至其處且佈置在冷卻板之內部區域中。兩個節段可為弧形，特別為大致上環狀弧形且與彼此同中心。 In a preferred embodiment of the water cooling system, the cooling system has an inlet joint, wherein the first section of the cooling channel extends from the inlet joint, particularly along the outer circumference of the cooling plate, into the outer area of the cooling plate, and has cooling The second section of the channel, which is connected to it and arranged in the inner area of the cooling plate. The two segments may be arc-shaped, in particular substantially circular arc-shaped and concentric with each other.

為首先籍由溫度較低之冷卻劑冷卻溫度較低之熱管，且然後 籍由溫度較高之冷卻劑冷卻溫度較高之熱管，較佳之情形為：壓力介質熱管在冷卻板之外部區域中緊固於或穿過冷卻板，且馬達熱管在冷卻板之內部區域中緊固於或穿過冷卻板。 Is to first cool the heat pipe with a lower temperature by a coolant with a lower temperature, and then The heat pipe of higher temperature is cooled by the higher temperature coolant, preferably: the pressure medium heat pipe is fastened to or passes through the cooling plate in the outer area of the cooling plate, and the motor heat pipe is tightened in the inner area of the cooling plate. Solid on or through the cooling plate.

在緊密總成之有利實施例中，槽之內壁及外壁為大致上圓柱狀，而底部成圓環之形式，而且蓋件或冷卻板成圓環或圓盤之形式。兩個壁部、底部、蓋件及冷卻板以及電馬達或驅動單元之中心線與彼此同中心，且中心線大致上垂直於支承表面。 In an advantageous embodiment of the compact assembly, the inner and outer walls of the groove are substantially cylindrical, the bottom is in the form of a ring, and the cover or cooling plate is in the form of a ring or disc. The center lines of the two walls, the bottom, the cover, the cooling plate, and the electric motor or drive unit are concentric with each other, and the center line is substantially perpendicular to the supporting surface.

在特別較佳實施例中，複數個壓力介質熱管以圓環之形式圍繞槽之圓周均勻分佈。 In a particularly preferred embodiment, a plurality of pressure medium heat pipes are uniformly distributed around the circumference of the groove in the form of a ring.

在特別較佳實施例中，複數個馬達熱管以圓環或圓盤之形式圍繞冷卻板之圓周均勻分佈。 In a particularly preferred embodiment, a plurality of motor heat pipes are uniformly distributed around the circumference of the cooling plate in the form of a ring or a disc.

通常，亦有可能使用熱虹吸管來代替所提及熱管，因為熱量較佳地始終在與重力相對之方向被轉移。 Generally, it is also possible to use a thermosyphon instead of the mentioned heat pipe, because the heat is preferably always transferred in a direction opposite to gravity.

1:泵 1: pump

2:頻率轉換器 2: Frequency converter

4:電力供應 4: power supply

6:導線 6: Wire

12:供應線路 12: Supply line

14:高壓側上之載荷埠 14: Load port on the high pressure side

19:冷卻通道 19: Cooling channel

20:返回線路 20: return line

22:通道 22: Channel

24:冷卻板 24: cooling plate

26:外殼 26: shell

40:阻尼元件 40: Damping element

42:底部 42: bottom

44:蓋件 44: cover

46:內壁 46: inner wall

48:外壁 48: Outer Wall

144:第一多板式總成 144: The first multi-plate assembly

146:壓力介質熱管 146: Pressure medium heat pipe

147:馬達熱管 147: Motor heat pipe

148:第二多板式總成 148: The second multi-plate assembly

150:第三多板式總成 150: The third multi-plate assembly

152:風扇 152: Fan

154:接頭 154: Connector

164:通風孔 164: Vent

166:熱沈 166: Heat sink

167:冷卻劑線路 167: coolant circuit

M:馬達 M: Motor

T:槽 T: Slot

根據本發明之緊密總成之若干例示性實施例示於各圖式中。現在參考此等圖式之各圖更詳細解釋本發明，其中：圖1在透視分解圖中展示根據第一例示性實施例之根據本發明之緊密總成，圖2在透視圖中展示根據第二例示性實施例之根據本發明之緊密總成，圖3在截面中展示圖2所示第二例示性實施例之冷卻板，圖4在透視縱向截面中展示根據第三例示性實施例之不具有槽之根據本發明之緊密總成， 圖5在透視縱向截面中展示根據第四例示性實施例之不具有槽之根據本發明之緊密總成，圖6在透視圖中展示根據第五例示性實施例之不具有槽及外殼之根據本發明之緊密總成，圖7在縱向截面中展示如圖6所示之根據本發明之緊密總成，以及圖8在示意性縱向截面中展示根據第六例示性實施例之根據本發明之緊密總成。 Several exemplary embodiments of the compact assembly according to the present invention are shown in the drawings. The present invention will now be explained in more detail with reference to the drawings of these drawings, in which: FIG. 1 shows in a perspective exploded view the compact assembly according to the present invention according to the first exemplary embodiment, and FIG. 2 shows in a perspective view the compact assembly according to the present invention. Two exemplary embodiments of the compact assembly according to the present invention, Fig. 3 shows in cross section the cooling plate of the second exemplary embodiment shown in Fig. 2, and Fig. 4 shows in perspective longitudinal section the cooling plate according to the third exemplary embodiment The compact assembly according to the present invention without grooves, Fig. 5 shows in a perspective longitudinal section the compact assembly according to the present invention without grooves according to the fourth exemplary embodiment, and Fig. 6 shows in a perspective view the basis of the fifth exemplary embodiment without grooves and housing The compact assembly of the present invention, Fig. 7 shows the compact assembly according to the present invention as shown in Fig. 6 in a longitudinal section, and Fig. 8 shows the compact assembly according to the present invention according to a sixth exemplary embodiment in a schematic longitudinal section Tight assembly.

根據本發明之緊密總成之展示於圖1至8中之所有例示性實施例具有成圓環形式塑料制之杯型槽T，該杯型槽T具有圓柱狀內壁46、圓柱狀外壁48及成圓環形式之底部42。槽T包圍驅動單元，該驅動單元藉由上電馬達M及下泵1形成。電馬達M與槽T同心佈置。 All the exemplary embodiments of the compact assembly according to the present invention shown in FIGS. 1 to 8 have a cup-shaped groove T made of plastic in the form of a ring, the cup-shaped groove T having a cylindrical inner wall 46 and a cylindrical outer wall 48 And the bottom 42 in the form of a ring. The slot T surrounds the driving unit, which is formed by the upper electric motor M and the lower pump 1. The electric motor M and the slot T are arranged concentrically.

泵經由吸入管線(未展示)自槽T吸入例如液壓油之壓力介質且將該壓力介質經由供應線路12輸送至位於高壓側上之載荷埠14(參看圖2)。壓力介質經由閥流至載荷(兩者都未展示)且經由緊密總成之返回線路20返流至槽T中。在此佈置中，各種冷卻裝置提供用於返流之壓力介質。 The pump sucks a pressure medium such as hydraulic oil from the tank T via a suction line (not shown) and delivers the pressure medium via the supply line 12 to the load port 14 on the high pressure side (see FIG. 2). The pressure medium flows through the valve to the load (both not shown) and flows back into the tank T through the return line 20 of the compact assembly. In this arrangement, various cooling devices provide pressure medium for backflow.

在圖1所示第一例示性實施例中，水冷卻系統經實現用於壓力介質。該水冷卻系統具有佈置於槽T之兩個第一多板式總成144，兩個第一多板式總成144之板大致上為半圓形且焊接在壓力介質熱管146上，壓力介質熱管146同樣地大部分位於環形槽T內。在頂部處，壓力介質熱管146以圓盤形式***冷卻板24中之孔中，且以藉助於熱化合物給予良好熱傳導之方式連接且藉助於干涉配合固定。 In the first exemplary embodiment shown in Fig. 1, a water cooling system is implemented for a pressure medium. The water cooling system has two first multi-plate assemblies 144 arranged in the tank T. The plates of the two first multi-plate assemblies 144 are substantially semicircular and are welded to the pressure medium heat pipe 146. The pressure medium heat pipe 146 Similarly, most of them are located in the annular groove T. At the top, the pressure medium heat pipe 146 is inserted into the hole in the cooling plate 24 in the form of a disc, and is connected in a manner that gives good heat conduction by means of a thermal compound and is fixed by means of interference fit.

冷卻板24係用作用於槽T之蓋件。驅動單元藉助於其電馬達M在冷卻板24下側中心區域懸浮。冷卻板24具備用於冷卻介質、較佳為冷卻水之冷卻通道19(參看圖3)，其中僅冷卻通道19之接頭154可見於圖1。因此，壓力介質之熱能經由第一多板式總成144吸收，藉由壓力介質熱管146攜載至冷卻板24中並在該處被吸收且被冷卻介質帶走。 The cooling plate 24 is used as a cover for the tank T. The drive unit is suspended in the central area of the lower side of the cooling plate 24 by means of its electric motor M. The cooling plate 24 is provided with a cooling channel 19 for cooling medium, preferably cooling water (see FIG. 3), of which only the joint 154 of the cooling channel 19 can be seen in FIG. Therefore, the heat energy of the pressure medium is absorbed by the first multi-plate assembly 144, is carried into the cooling plate 24 by the pressure medium heat pipe 146, and is absorbed there and taken away by the cooling medium.

壓力介質之返回線路20處於冷卻板24中，且泵1之吸入管線處於槽T之下部區域中。第一多板式總成144之板經設置在輕微斜坡上且各穿過環形槽T之截面積的幾乎一半。因此，返回的壓力介質流在操作期間成盤旋狀經向下引導。優點在於，體積得到充分利用，且無流之短路可自身在返回線路20與吸入管線之間建立。此外，兩個第一多板式總成144之板周圍的受控流減小壓力介質與板之間的熱阻力且增大冷卻能力。另外，使用空氣與壓力介質之間的壓差促進自壓力介質對空氣之移除。 The return line 20 of the pressure medium is in the cooling plate 24, and the suction line of the pump 1 is in the lower area of the tank T. The plates of the first multi-plate assembly 144 are arranged on a slight slope and each pass through almost half of the cross-sectional area of the annular groove T. Therefore, the returning pressure medium flow is guided downward in a spiral shape during operation. The advantage is that the volume is fully utilized, and a short circuit without flow can itself be established between the return line 20 and the suction line. In addition, the controlled flow around the plates of the two first multi-plate assemblies 144 reduces the thermal resistance between the pressure medium and the plates and increases the cooling capacity. In addition, the use of the pressure difference between the air and the pressure medium promotes the removal of air from the pressure medium.

若自壓力介質至壓力介質熱管146之熱傳遞足夠優良，則不需要圖1所示兩個第一多板式總成144。在此種例示性實施例(未展示)中，例如，可籍由位於環形槽T之內部空間中之板或幾何形狀產生螺旋形流。 If the heat transfer from the pressure medium to the pressure medium heat pipe 146 is sufficiently good, the two first multi-plate assemblies 144 shown in FIG. 1 are not required. In such an exemplary embodiment (not shown), for example, a spiral flow can be generated by a plate or geometric shape located in the inner space of the annular groove T.

圖2展示根據本發明之緊密總成之第二例示性實施例中之兩個第一多板式總成144及在其間容納之驅動單元。相對於第一例示性實施例之差異可見於電馬達M亦藉助於馬達熱管147冷卻之事實。為達此目的，馬達熱管147***電馬達M之外殼中。因為圖2中之冷卻板未展示，所以一個第一多板式總成144之四個壓力介質熱管146、另一第一多板式總成144之四個壓力介質熱管146及電馬達M之四個馬達熱管147的相應上端節段可見。所有熱管146、147穿過冷卻板24(未在圖2中展示)且在冷卻 板24頂側上結束。 FIG. 2 shows two first multi-plate assemblies 144 in a second exemplary embodiment of a compact assembly according to the present invention and a drive unit accommodated therebetween. The difference from the first exemplary embodiment can be seen in the fact that the electric motor M is also cooled by means of the motor heat pipe 147. To achieve this, the motor heat pipe 147 is inserted into the housing of the electric motor M. Because the cooling plate in FIG. 2 is not shown, the four pressure medium heat pipes 146 of a first multi-plate assembly 144, the four pressure medium heat pipes 146 of the other first multi-plate assembly 144, and the four electric motors M The corresponding upper end section of the motor heat pipe 147 is visible. All heat pipes 146, 147 pass through the cooling plate 24 (not shown in FIG. 2) and are cooling The board 24 ends on the top side.

因為支承平面藉由杯型槽T(未在圖2中展示)底部42在杯型槽T下部區域中界定，所以壓力介質熱管146及馬達熱管147垂直於該平面對準，從而熱管146、147在緊密總成之操作期間始終佈置為垂直於地面之重力，且可以最佳方式將熱量自底部向上轉移至冷卻板24。 Because the supporting plane is defined in the lower region of the cup-shaped groove T (not shown in FIG. 2) by the bottom 42 of the cup-shaped groove T, the pressure medium heat pipe 146 and the motor heat pipe 147 are aligned perpendicular to the plane, so that the heat pipes 146, 147 During the operation of the compact assembly, it is always arranged with gravity perpendicular to the ground, and the heat can be transferred from the bottom up to the cooling plate 24 in the best way.

亦可見導線6，其中電馬達M經由導線6供應有電流。導線6穿過冷卻板24。 The wire 6 can also be seen, in which the electric motor M is supplied with current via the wire 6. The wire 6 passes through the cooling plate 24.

圖3在截面中展示圖2中所示之第二例示性實施例之冷卻板24(在下文中進行評論)。冷卻板24由例如鋁之熱傳導材料且藉助於壓鑄製程而產生。將鋼制預成形彎管例如***壓鑄模具中，確保該管隨後處於冷卻板24內且嵌入外殼中。進而形成冷卻通道19。 Fig. 3 shows in cross section the cooling plate 24 of the second exemplary embodiment shown in Fig. 2 (reviewed below). The cooling plate 24 is made of a thermally conductive material such as aluminum and is produced by means of a die-casting process. The steel pre-formed elbow is inserted, for example, into a die casting mold, ensuring that the pipe is then placed in the cooling plate 24 and embedded in the housing. In turn, a cooling channel 19 is formed.

形成冷卻通道19之管較佳地以此種方式成形且***模具中，以至冷卻通道19直接相鄰於熱管146、147之上端節段延伸。因此針對自熱管146、147至冷卻介質、較佳地為冷卻水之轉移的熱阻力得以減小。 The tube forming the cooling channel 19 is preferably shaped and inserted into the mold in such a way that the cooling channel 19 extends directly adjacent to the upper end section of the heat pipes 146 and 147. Therefore, the thermal resistance to the transfer from the heat pipes 146 and 147 to the cooling medium, preferably cooling water, is reduced.

冷卻通道19較佳地以此種方式延伸，以至冷卻介質首先冷卻壓力介質熱管146，因為壓力介質不得不經調整至約50℃，且然後冷卻馬達熱管147，因為電馬達M不得不經冷卻至約100℃。為達此目的，冷卻通道19具有在冷卻介質流動方向上之外部弧形節段或第一節段及第二弧形內部節段。將冷卻通道19圍繞彎曲使冷卻通道19之徑向接頭154得以定位為彼此鄰近。 The cooling channel 19 preferably extends in this way, so that the cooling medium first cools the pressure medium heat pipe 146 because the pressure medium has to be adjusted to about 50°C, and then cools the motor heat pipe 147 because the electric motor M has to be cooled to About 100°C. To achieve this, the cooling passage 19 has an outer arc section or a first section and a second arc inner section in the direction of the flow of the cooling medium. Curving the cooling channel 19 around allows the radial joints 154 of the cooling channel 19 to be positioned adjacent to each other.

在圖4所示第三例示性實施例中，冷卻介質、較佳為冷卻水除了用來冷卻壓力介質及電馬達M之外又用來冷卻電馬達M之頻率轉換器 2，因為冷卻板24之冷卻通道19(***管或鏜孔)亦延伸經過頻率轉換器2，去往頻率轉換器2之下。頻率轉換器2較佳地藉助於熱化合物以熱傳導方式接合至冷卻板24頂側，該頂側背離槽T且背離驅動單元。 In the third exemplary embodiment shown in FIG. 4, the cooling medium, preferably cooling water, is used to cool the frequency converter of the electric motor M in addition to the pressure medium and the electric motor M. 2. Because the cooling channel 19 (insertion tube or bore) of the cooling plate 24 also extends through the frequency converter 2 and goes under the frequency converter 2. The frequency converter 2 is preferably thermally joined to the top side of the cooling plate 24 by means of a thermal compound, which top side faces away from the groove T and away from the drive unit.

在圖5所示第四例示性實施例中，頻率轉換器2藉助於返流之壓力介質得以冷卻。更精確而言，返回線路20經由佈置於冷卻板24內、直接位於頻率轉換器2下之通道22連接至槽T。為壓力介質所吸收之頻率轉換器2之熱量則隨後經由兩個第一多板式總成144及壓力介質熱管146耗散。 In the fourth exemplary embodiment shown in FIG. 5, the frequency converter 2 is cooled by means of the pressure medium flowing back. More precisely, the return line 20 is connected to the tank T via a channel 22 arranged in the cooling plate 24 and directly under the frequency converter 2. The heat of the frequency converter 2 absorbed by the pressure medium is then dissipated through the two first multi-plate assemblies 144 and the pressure medium heat pipe 146.

在圖6所示第五例示性實施例中，空氣冷卻系統得以實現，該空氣冷卻系統可具備冷卻介質以代替上述冷卻。為減少不同部分的數量，亦可在第五例示性實施例之冷卻板24的情況下提供接頭154及對應冷卻通道19。與上述例示性實施例相比，在此之熱管146、147更長，穿透冷卻板24頂側且以熱傳導方式連接(例如焊接)至該冷卻板頂側上之一第二多板式總成148和一第三多板式總成150。 In the fifth exemplary embodiment shown in FIG. 6, an air cooling system is implemented, and the air cooling system may be provided with a cooling medium instead of the above-mentioned cooling. In order to reduce the number of different parts, a joint 154 and a corresponding cooling channel 19 may also be provided in the case of the cooling plate 24 of the fifth exemplary embodiment. Compared with the above-mentioned exemplary embodiment, the heat pipes 146, 147 here are longer, penetrate the top side of the cooling plate 24 and are thermally connected (for example, welded) to a second multi-plate assembly on the top side of the cooling plate. 148 and a third multi-plate assembly 150.

用於壓力介質之第二多板式總成148及電馬達M之第三多板式總成150並非以熱傳導方式連接至彼此，因為可允許電馬達M之第三多板式總成150比用於壓力介質之第二多板式總成148溫度更高。為達此目的，用於壓力介質之四個近似四分之一圓周形的第二多板式總成148佈置於冷卻板24之外部區域中，且用於電馬達M之四個近似柱形較小的第三多板式總成150佈置於冷卻板24頂側之內部區域中。 The second multi-plate assembly 148 for the pressure medium and the third multi-plate assembly 150 of the electric motor M are not thermally connected to each other, because the third multi-plate assembly 150 of the electric motor M is allowed to be used for pressure The second multi-plate assembly 148 of the medium has a higher temperature. For this purpose, four approximately quarter-circular second multi-plate assemblies 148 for the pressure medium are arranged in the outer area of the cooling plate 24, and four approximately cylindrical assemblies for the electric motor M The small third multi-plate assembly 150 is arranged in the inner area of the top side of the cooling plate 24.

藉助於總共八個第二多板式總成148和第三多板式總成150，冷卻板24頂側上之四個近似四分之一圓周形區域藉由多板式總成佔 據。為增強冷卻能力，將風扇152安裝於每一對四分之一圓周形區域之間。 With a total of eight second multi-plate assembly 148 and third multi-plate assembly 150, the four approximately quarter-circular areas on the top side of the cooling plate 24 are occupied by the multi-plate assembly according to. To enhance the cooling capacity, a fan 152 is installed between each pair of quarter-circular regions.

頻率轉換器2佈置於多板式總成與風扇152之間的區域中(在圖6中顯示為未被佔用)。 The frequency converter 2 is arranged in the area between the multi-plate assembly and the fan 152 (shown as unoccupied in FIG. 6).

圖7在透視縱向截面中展示圖6所示根據本發明之緊密總成之大半完成的第五例示性實施例。可見，第二多板式總成148、第三多板式總成150、風扇152及頻率轉換器2藉由外殼26覆蓋，外殼26之外徑大致上對應槽T之外壁48之外徑及冷卻板24之外徑。因此，整體緊密總成為圓柱狀。在外殼26中存在通風孔164。導線6自頻率轉換器2經由冷卻板24延伸至電馬達M。 Fig. 7 shows, in a perspective longitudinal section, a fifth exemplary embodiment of the compact assembly according to the present invention shown in Fig. 6 which is mostly completed. It can be seen that the second multi-plate assembly 148, the third multi-plate assembly 150, the fan 152, and the frequency converter 2 are covered by the housing 26. The outer diameter of the housing 26 roughly corresponds to the outer diameter of the outer wall 48 of the groove T and the cooling plate The outer diameter of 24. Therefore, the whole is compact and always cylindrical. There are vent holes 164 in the housing 26. The wire 6 extends from the frequency converter 2 to the electric motor M via the cooling plate 24.

電馬達M經由阻尼元件40安裝於冷卻板24下側。 The electric motor M is mounted on the lower side of the cooling plate 24 via the damping element 40.

頻率轉換器具有電力電子器件(未具體展示)，該等電力電子器件直接位於冷卻板24頂側上。 The frequency converter has power electronic devices (not shown in detail), and these power electronic devices are directly located on the top side of the cooling plate 24.

在圖8所示第六例示性實施例中，槽T藉由蓋件44覆蓋，其中電馬達M緊固於蓋件44上。在此情況下，展示出替代冷卻裝置。壓力介質及/或電馬達M及/或頻率轉換器2直接藉助於流過冷卻劑線路167之冷卻水冷卻。更精確而言，冷卻劑線路167由軟管或管形成，該軟管或管引導經過槽T之內部空間及/或經過或圍繞電馬達M及/或經過頻率轉換器2之熱沈166。在此情況下，冷卻劑線路167具有大的表面積，例如藉助於翅片結構，以盤旋狀延伸，以便具有較長長度，由例如銅或鋁之優良熱導率之材料組成，且具有極薄之壁。 In the sixth exemplary embodiment shown in FIG. 8, the groove T is covered by the cover 44, in which the electric motor M is fastened to the cover 44. In this case, an alternative cooling device is shown. The pressure medium and/or the electric motor M and/or the frequency converter 2 are directly cooled by the cooling water flowing through the coolant line 167. More precisely, the coolant line 167 is formed by a hose or tube that is guided through the internal space of the tank T and/or through or around the electric motor M and/or through the heat sink 166 of the frequency converter 2. In this case, the coolant line 167 has a large surface area, for example, by means of a fin structure, extends in a spiral shape so as to have a longer length, is composed of materials with excellent thermal conductivity such as copper or aluminum, and has an extremely thin The wall.

根據兩個箭頭，冷卻劑線路167中之冷卻水流動方向以此種方式經選擇，以至首先穿過將要冷卻至最低溫度之部件，在此情況下為例 如油之壓力介質，然後穿過電馬達M，且最終穿過溫度最高之部件，亦即頻率轉換器2之熱沈166。 According to the two arrows, the flow direction of the cooling water in the coolant line 167 is selected in this way so that it first passes through the part that will be cooled to the lowest temperature, in this case as an example The pressure medium, such as oil, then passes through the electric motor M, and finally passes through the component with the highest temperature, that is, the heat sink 166 of the frequency converter 2.

揭示一種緊密電動液壓總成，該緊密電動液壓總成之返流回槽中之壓力介質及該緊密電動液壓總成之驅動泵之電馬達藉助於共用冷卻裝置冷卻。根據第一變型，提供冷卻劑線路，且根據第二變型，提供熱管，該等熱管將熱量自壓力介質及電馬達轉移至冷卻板。 A compact electro-hydraulic assembly is disclosed. The pressure medium in the return groove of the compact electro-hydraulic assembly and the electric motor of the drive pump of the compact electro-hydraulic assembly are cooled by a common cooling device. According to the first variant, a coolant circuit is provided, and according to the second variant, heat pipes are provided which transfer heat from the pressure medium and the electric motor to the cooling plate.

20:返回線路 20: return line

24:冷卻板 24: cooling plate

42:底部 42: bottom

46:內壁 46: inner wall

48:外壁 48: Outer Wall

144:第一多板式總成 144: The first multi-plate assembly

146:壓力介質熱管 146: Pressure medium heat pipe

154:接頭 154: Connector

M:馬達 M: Motor

T:槽 T: Slot

Claims (19)

一種具有一驅動單元之緊密電動液壓總成，該驅動單元具有一電馬達(M)及一液壓靜力泵(1)，其中壓力介質可藉助於該泵(1)自該緊密電動液壓總成之一槽(T)吸入，特徵在於：一冷卻裝置，其延伸至該槽(T)之一內部空間中。 A compact electro-hydraulic assembly with a drive unit, the drive unit having an electric motor (M) and a hydrostatic pump (1), wherein the pressure medium can be from the compact electro-hydraulic assembly by means of the pump (1) A trough (T) is sucked in and is characterized by a cooling device that extends into an internal space of the trough (T). 如申請專利範圍第1項之緊密電動液壓總成，其中該冷卻裝置經設計來冷卻該電馬達(M)且與該電馬達(M)處於熱傳導連接中。 For example, the compact electro-hydraulic assembly of item 1 of the scope of patent application, wherein the cooling device is designed to cool the electric motor (M) and is in a thermally conductive connection with the electric motor (M). 如申請專利範圍第2項之緊密電動液壓總成，其中該冷卻裝置具有一冷卻劑線路(167)，該冷卻劑線路(167)之一節段佈置在該槽(T)之該內部空間中，且該冷卻劑線路(167)與該電馬達(M)處於熱傳導連接中。 For example, the compact electro-hydraulic assembly of item 2 of the scope of patent application, wherein the cooling device has a coolant circuit (167), and a section of the coolant circuit (167) is arranged in the internal space of the groove (T), And the coolant circuit (167) and the electric motor (M) are in a thermally conductive connection. 如申請專利範圍第3項之緊密電動液壓總成，其中該槽(T)藉由一蓋件(44)閉合，其中該驅動單元緊固於該蓋件(44)上。 For example, the compact electro-hydraulic assembly of item 3 of the scope of patent application, wherein the groove (T) is closed by a cover (44), and the drive unit is fastened on the cover (44). 如申請專利範圍第4項之緊密電動液壓總成，其中一熱沈(166)佈置在該蓋件(44)之背向該槽(T)之一側上，其中用於該電馬達(M)之一頻率轉換器(2)以一熱傳導方式緊固於該熱沈(166)上，且其中該熱沈(166)與該冷卻劑線路(167)處於熱傳導連接中。 For example, the compact electro-hydraulic assembly of item 4 of the scope of patent application, in which a heat sink (166) is arranged on the side of the cover (44) facing away from the groove (T), which is used for the electric motor (M ) A frequency converter (2) is fastened to the heat sink (166) in a thermally conductive manner, and the heat sink (166) and the coolant circuit (167) are in a thermally conductive connection. 如申請專利範圍第5項之緊密電動液壓總成，其中首先該壓力介質，然後該電馬達(M)以及最終該熱沈(166)可藉助於該冷卻劑線路(167)冷卻。 For example, the compact electro-hydraulic assembly of item 5 of the scope of patent application, wherein first the pressure medium, then the electric motor (M) and finally the heat sink (166) can be cooled by means of the coolant circuit (167). 如申請專利範圍第1項之緊密電動液壓總成，其中該冷卻裝置具有一冷卻板(24)，該槽(T)藉由該冷卻板(24)閉合，且該驅動單元緊固於該冷卻板(24)上，且其中該冷卻裝置具有至少一個壓力介質熱管(146)，該至少一個 壓力介質熱管(146)自槽(T)之該內部空間延伸至該冷卻板(24)，且以一熱傳導方式緊固於或穿過該冷卻板(24)。 For example, the compact electro-hydraulic assembly of item 1 of the scope of patent application, wherein the cooling device has a cooling plate (24), the groove (T) is closed by the cooling plate (24), and the drive unit is fastened to the cooling plate Plate (24), and wherein the cooling device has at least one pressure medium heat pipe (146), the at least one The pressure medium heat pipe (146) extends from the inner space of the tank (T) to the cooling plate (24), and is fastened to or passes through the cooling plate (24) in a heat conduction manner. 如申請專利範圍第7項之緊密電動液壓總成，其中至少一個第一多板式總成(144)提供在該槽(T)中，該多板式總成以一熱傳導方式緊固於該壓力介質熱管(146)上，且其中該壓力介質經由該槽(T)內之該第一多板式總成(144)傳遞。 For example, the compact electro-hydraulic assembly of item 7 of the scope of patent application, in which at least one first multi-plate assembly (144) is provided in the groove (T), and the multi-plate assembly is fastened to the pressure medium in a thermally conductive manner On the heat pipe (146), and wherein the pressure medium is transferred through the first multi-plate assembly (144) in the groove (T). 如申請專利範圍第7或8項之緊密電動液壓總成，其中該壓力介質熱管(146)穿過該冷卻板(24)且以一熱傳導方式連接至一第二多板式總成(148)，該第二多板式總成(148)佈置在該冷卻板(24)之背向該槽(T)之一側上。 For example, the compact electro-hydraulic assembly of item 7 or 8 of the scope of patent application, wherein the pressure medium heat pipe (146) passes through the cooling plate (24) and is connected to a second multi-plate assembly (148) in a heat conduction manner, The second multi-plate assembly (148) is arranged on the side of the cooling plate (24) facing away from the groove (T). 如申請專利範圍第2項之緊密電動液壓總成，其中該冷卻裝置具有一冷卻板(24)，該槽(T)藉由該冷卻板(24)閉合，且該驅動單元緊固於該冷卻板(24)上，且其中該冷卻裝置具有至少一個壓力介質熱管(146)，該至少一個壓力介質熱管(146)自該槽(T)之該內部空間延伸至該冷卻板(24)，且其中該冷卻裝置具有至少一個馬達熱管(147)，該至少一個馬達熱管(147)自該電馬達(M)在該冷卻板(24)之方向上延伸，且其中該壓力介質熱管(146)和該馬達熱管(147)以一熱傳導方式緊固於或穿過該冷卻板(24)。 For example, the compact electro-hydraulic assembly of item 2 of the scope of patent application, wherein the cooling device has a cooling plate (24), the groove (T) is closed by the cooling plate (24), and the drive unit is fastened to the cooling plate On the plate (24), and wherein the cooling device has at least one pressure medium heat pipe (146), the at least one pressure medium heat pipe (146) extends from the inner space of the tank (T) to the cooling plate (24), and Wherein the cooling device has at least one motor heat pipe (147), the at least one motor heat pipe (147) extends from the electric motor (M) in the direction of the cooling plate (24), and wherein the pressure medium heat pipe (146) and The motor heat pipe (147) is fastened to or passes through the cooling plate (24) in a heat conduction manner. 如申請專利範圍第10項之緊密電動液壓總成，其中該馬達熱管(147)以熱傳導方式***該電馬達(M)之一外殼中。 For example, the compact electro-hydraulic assembly of item 10 of the scope of patent application, in which the motor heat pipe (147) is inserted into a housing of the electric motor (M) by heat conduction. 如申請專利範圍第10或11項之緊密電動液壓總成，其中該馬達熱管(147)穿過該冷卻板(24)且以一熱傳導方式連接至一第三多板式總成(150)，該第三多板式總成(150)佈置在該冷卻板(24)之背向該槽(T)之一側上。 For example, the compact electro-hydraulic assembly of item 10 or 11 of the scope of patent application, wherein the motor heat pipe (147) passes through the cooling plate (24) and is connected to a third multi-plate assembly (150) in a thermally conductive manner, the The third multi-plate assembly (150) is arranged on the side of the cooling plate (24) facing away from the groove (T). 如申請專利範圍第10項之緊密電動液壓總成，其中至少一個支承 表面或至少一個支承裝置佈置為相鄰於該槽(T)之背向該冷卻板(24)之一區域或在該區域上，該表面或裝置界定該緊密總成之一支承平面，其中該壓力介質熱管(146)和該馬達熱管(147)佈置為大致上垂直於該支承平面。 Such as the compact electro-hydraulic assembly of item 10 of the scope of patent application, at least one of which supports The surface or at least one supporting device is arranged adjacent to or on an area of the groove (T) facing away from the cooling plate (24), the surface or device defining a supporting plane of the compact assembly, wherein the The pressure medium heat pipe (146) and the motor heat pipe (147) are arranged substantially perpendicular to the supporting plane. 如申請專利範圍第7或8項之緊密電動液壓總成，其中該電馬達(M)藉助於一頻率轉換器(2)經電供應，該頻率轉換器(2)以一熱傳導方式緊固於該冷卻板(24)之背向該槽(T)之一側上。 For example, the compact electro-hydraulic assembly of item 7 or 8 of the scope of patent application, in which the electric motor (M) is supplied with electricity by means of a frequency converter (2), and the frequency converter (2) is fastened in a thermally conductive manner to On the side of the cooling plate (24) facing away from the groove (T). 如申請專利範圍第10項之緊密電動液壓總成，其中一冷卻通道(19；22)提供在該冷卻板(24)中。 For example, the compact electro-hydraulic assembly of item 10 of the scope of patent application, one of the cooling channels (19; 22) is provided in the cooling plate (24). 如申請專利範圍第15項之緊密電動液壓總成，其中該冷卻通道(19；22)藉由將一管***用於該冷卻板(24)之一鋁壓鑄模具中產生。 For example, the compact electro-hydraulic assembly of the 15th patent application, in which the cooling channel (19; 22) is created by inserting a tube into an aluminum die-casting mold for the cooling plate (24). 如申請專利範圍第15項之緊密電動液壓總成，其中該冷卻通道(22)沿該頻率轉換器(2)與該冷卻板(24)之間的一接觸區域延伸，且形成用於該壓力介質之一返回線路(20)之一節段。 For example, the compact electro-hydraulic assembly of item 15 of the scope of patent application, wherein the cooling channel (22) extends along a contact area between the frequency converter (2) and the cooling plate (24), and is formed for the pressure One of the medium returns to a section of the line (20). 如申請專利範圍第15項之緊密電動液壓總成，其具有一入口接頭(154)，其中該冷卻通道(19)之一第一節段自該入口接頭(154)延伸至該冷卻板(24)之一外部區域中，且具有該冷卻通道(19)之一第二節段，該第二節段連接至其處且佈置在該冷卻板(24)之一內部區域中。 For example, the compact electro-hydraulic assembly of item 15 of the scope of patent application has an inlet joint (154), wherein a first section of the cooling channel (19) extends from the inlet joint (154) to the cooling plate (24) ) In an outer area, and has a second section of the cooling channel (19), the second section is connected to it and arranged in an inner area of the cooling plate (24). 如申請專利範圍第18項之緊密電動液壓總成，其中該至少一個壓力介質熱管(146)在冷卻板(24)之該外部區域中緊固於或穿過該冷卻板(24)，且其中該至少一個馬達熱管(147)在冷卻板(24)之該內部區域中緊固於或穿過該冷卻板(24)。 For example, the compact electro-hydraulic assembly of item 18 of the scope of patent application, wherein the at least one pressure medium heat pipe (146) is fastened to or passes through the cooling plate (24) in the outer area of the cooling plate (24), and wherein The at least one motor heat pipe (147) is fastened to or passes through the cooling plate (24) in the inner region of the cooling plate (24).
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