WO2016106469A1 - Cooling layout structure for direct-connection-type oil-free compressor - Google Patents
Cooling layout structure for direct-connection-type oil-free compressor Download PDFInfo
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- WO2016106469A1 WO2016106469A1 PCT/CN2014/001186 CN2014001186W WO2016106469A1 WO 2016106469 A1 WO2016106469 A1 WO 2016106469A1 CN 2014001186 W CN2014001186 W CN 2014001186W WO 2016106469 A1 WO2016106469 A1 WO 2016106469A1
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- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- the invention belongs to the technical field of compressors, and relates to a cooling system of a compressor, in particular to a cooling layout structure of an oil-free compressor, and more particularly to a cooling layout structure of a direct-connected oil-free compressor.
- the existing oil-free compressor is equipped with a cooling system based on a cooling fan without exception, thereby dissipating the compression heat of the compressor, the frictional heat and the heat generated by the motor, thereby achieving Reduce the heat load of the compressor to ensure the reliability of the compressor.
- compression heat and friction heat are the main heat sources of the compressor, mainly concentrated at the cylinder head; while the direct-coupled motors that drive the compressors run, the heat generated is mostly concentrated at the stator and the rotor.
- the cooling system layout of the current direct-connected oil-free compressor has two forms: 1) The cooling fan is arranged at the tailstock of the motor and driven by the motor shaft, and the cooling air generated by the cooling air first cools the motor. Then, under the guidance of the shroud casing, the cylinder head of the compressor is blown and cooled; 2) the cooling fan is arranged in the crankcase of the compressor and driven by the crank or the crankshaft, and the cooling air generated by the cooling fan is directly blown toward The cylinder liner, piston, connecting rod and other components are then led to the cylinder head of the compressor and the cylinder head is cooled.
- the cooling layout scheme of the above-mentioned conventional direct-connected oil-free compressor has the advantages of compact structure, but its disadvantages are also obvious: in the first scheme, the cooling fan is arranged at the tailstock of the motor, due to the cylinder of the distance compressor The head is far away, so the cooling effect on the cylinder head of the compressor is poor. In the second scheme, although the fan is closer to the main heat source of the cylinder head, the cooling air is restrained and blocked by the cylinder and the crankcase, causing the blowing direction. The airflow in the cylinder head often presents a cooling dead zone, which affects the heat dissipation effect of the compressor.
- the present invention provides a cooling layout structure of a direct-coupled oil-free compressor, which aims to effectively cool the cylinder head of the compressor, thereby reducing the heat of the compressor. load.
- the present invention provides a cooling layout structure of a direct-coupled oil-free compressor, including a cooling fan, a cylinder, and a cylinder head, and is provided with a volute and a shroud, the volute and the fan of the cooling fan
- the cooling fan is coupled to the compressor motor shaft
- the shroud is disposed at a side of the compressor
- the air passage of the shroud and the exhaust runner of the volute are butted against each other
- the shroud is at least
- An air passage is provided to the cylinder head of the compressor; part or all of the airflow generated by the cooling fan is guided by the volute and the shroud to the cylinder head of the compressor, and is swept by the flow across the cylinder head The outer surface of the cylinder head.
- the cooling fan is a centrifugal fan structure, and the cooling fan and the volute are arranged next to the compressor crankcase.
- the cylinder head is provided with a directional rib structure in a layout direction that is consistent with the flow direction of the air flowing over the outer surface of the cylinder head.
- the cylinder is provided with a forward rib structure in which the layout direction is consistent with the flow direction of the airflow passing over the outer surface of the cylinder.
- the cooling fan of the compressor adopts a front end axial air intake mode, and an axial air inlet is provided at a central portion of the front end of the volute, and the axial air inlet introduces the outside air into a central low pressure region of the cooling fan.
- the cooling fan of the above compressor adopts an axial air intake mode from a radial inlet of one side of the crankcase to a central portion of the rear end of the volute, and is opened on one side or both sides of the motor casing or/and the crankcase. There is a radial air inlet opening that directs the outside atmosphere into the central low pressure region of the cooling fan.
- the cooling fan of the above compressor adopts the rear end of the volute from the radial intake of one side of the crankcase and then the central portion of the rear end of the volute.
- the axial intake and the central portion of the front end of the volute are axially assisted.
- an axial air inlet is provided in the central portion of the volute, and at the same time in the motor casing or/and
- a radial air inlet hole is defined in one side or both sides of the crankcase, and the axial air inlet and the radial air inlet hole can introduce the outside atmosphere into the central low pressure region of the cooling fan.
- the centrifugally pressurized airflow is guided to the shroud through the volute air outlet, and then enters through the side of the compressor cylinder head in the axial direction of the motor, and is discharged to the other side of the compressor cylinder cover, and at the same time, a part of the centrifugal increase
- the compressed airflow is guided to the shroud through the volute air outlet, it enters from the cylinder cooling hole of one side of the crankcase, flows through the outer surface of the cylinder and is discharged from the cooling hole of the other cylinder.
- At least one intake passage is connected to the direct-coupled motor of the compressor via a direct-coupled motor to the intake port of the cooling fan or an exhaust passage of the shroud, and is cooled by a portion of the airflow generated by the guide cooling fan Directly connected motor.
- the above cooling fan, cylinder, cylinder head, volute and shroud can be arranged in multiple groups at the same time and share a direct-coupled motor.
- the cooling layout structure of the direct-coupled oil-free compressor of the present invention is that the airflow generated by the centrifugal cooling fan is guided to the main heat dissipating cylinder head and the cylinder of the compressor by using a volute and a shroud structure, and The cooling wind crosses the layout of the cylinder head, whereby the compressor can be effectively cooled, thereby reducing the heat load of the compressor.
- FIG. 1 is a perspective sectional view showing a cooling arrangement of a direct-connected oil-free compressor of the present invention using a side-side radial air intake scheme
- Figure 2 is a schematic view showing the gas flow path of the cooling layout configuration of the direct-connected oil-free compressor of the present invention shown in Figure 1;
- FIG. 3 is a schematic view showing the axial measurement of a front-end axial air intake scheme of a direct-connected oil-free compressor cooling layout structure according to the present invention
- Figure 4 is a perspective view showing another direction of the cooling layout configuration of the direct-connected oil-free compressor of the present invention shown in Figure 3;
- Figure 5 is a longitudinal sectional view showing a cooling layout configuration of a direct-connected oil-free compressor of the present invention shown in Figure 3;
- Figure 6 is a cross-sectional view showing a cooling layout configuration of a direct-connected oil-free compressor of the present invention shown in Figure 3;
- FIG. 7 is a schematic view showing the axial layout of a direct-connected oil-free compressor cooling layout structure using both front-end axial intake and side-side radial intake;
- FIG. 8 is a schematic view showing the axial flow of a gas flow path of a front-end axial air intake scheme of a direct-connected oil-free compressor cooling layout structure according to the present invention
- FIG. 9 is a second axial view of a gas flow path of a front-end axial air intake scheme embodiment of a direct-connected oil-free compressor cooling layout structure according to the present invention.
- Figure 10 is a schematic diagram of a direct-connected oil-free compressor cooling layout structure of the present invention using a compressor cooling fan while using a volute rear end from a side of the crankcase and then to the center of the volute Schematic diagram of the axially auxiliary intake two intake schemes of the central portion of the intake and volute front ends.
- FIG. 11 is a cooling arrangement of a direct-connected oil-free compressor according to the present invention, which uses a cooling fan of a compressor and simultaneously adopts a volute rear end from a side of the crankcase to the central portion of the rear end of the volute.
- a cooling layout structure of a direct-connected oil-free compressor includes a cooling fan 11, a cylinder 2 and a cylinder head 3.
- the compressor of the present invention is directly connected to the motor 4, wherein the motor 4 is composed of a rotor 4a and a stator 4b, and a motor 4, the rotating shaft 5 is fastened to the crank 6 of the compressor or the rotating shaft 5 is integrally formed with the crank 6 of the compressor (as shown in FIG.
- the motor 4 directly drives the connecting rod 7 and the piston 8 of the compressor to operate;
- the number of the cylinders 2 of the present invention may be one or two, and correspondingly there are also the connecting rods 7 and the pistons 8 corresponding to the number, and when the type of the double cylinders 2 is adopted, an optimal layout is adopted.
- the two cylinders 2 are placed at the two axial ends of the motor 4 (as shown in FIG. 5); in order to obtain a better cooling effect, the present invention is characterized in that a volute 9 and a shroud 10 are provided.
- the volute 9 is disposed in response to the fan blade of the cooling fan 11 of the compressor (see FIG. 1, FIG. 2, FIG. 5 and FIG.
- the volute 9 is contained or the semi-contained cooling fan 11 is disposed, on the other hand
- the airflow generated by the cooling fan 11 is mainly guided by the volute 9, and the shroud 10 can receive cold guide
- the body portion is disposed further from the motor 4 than the main body portion of the crankcase 12 but in close proximity to the crankcase 12, and further includes a side portion of the crankcase 12 disposed adjacent to the compressor, that is, disposed adjacent to the crankcase 12 but
- the main body portion of the shroud 10 is closer to the rotation axis of the rotating shaft 5 than the main portion of the crankcase 12 in the direction of the radius of gyration of the rotating shaft 5 or the crank 6, as shown in Figs.
- the shroud 10 is guided to the cylinder head 3 of the compressor and swept across the outer surface of the cylinder head 3 in a manner of flowing across the cylinder head 3;
- the volute 9 and the shroud 10 of the present invention may Made for one-piece construction, or they can be individually made and then fastened Together, further, the crankcase 12 can even participate / or constitute a part of the volute 9 and shroud 10; in addition
- the airflow referred to in the present invention sweeps across the outer surface of the cylinder head 3 in a manner of flowing across the cylinder head 3, meaning that the airflow is from one or several edges of the cylinder head 3 (including straight edges, folds Edges, arc edges)
- the cooling fan 11 can be constructed with a centrifugal fan, in which case the cooling fan 11 and the volute 9 are arranged next to the compressor crankcase 12, and the optimal layout scheme is to cool the fan 11 and the volute 9
- the main body portion of the volute 9 is disposed sideways of the front end portion of the crankcase 12 of the compressor, that is, in the axial direction of the rotating shaft 5, and is disposed farther from the motor 4 than the main portion of the crankcase 12 but is disposed adjacent to the crankcase 12 ( As shown in Figure 5).
- the cylinder head 3 is provided with a configuration of a forward rib 13 which is aligned with the flow direction of the airflow passing over the outer surface of the cylinder head 3 (see, for example, 2).
- the strip-shaped ridge portion of the rib 13 has a strip-like direction which is substantially consistent with the flow direction of the airflow (the optimal layout is arranged in parallel with the flow direction of the airflow), so that the gas flow resistance can be greatly reduced, thereby enhancing the heat exchange effect.
- the cylinder 2 may be provided with a rib structure (not shown) in which the layout direction is consistent with the flow direction of the air flowing over the outer surface of the cylinder 2, the so-called forward direction is
- the strip-shaped ridges of the ribs have a strip-like trend that is substantially consistent with the flow direction of the airflow (the optimal layout is arranged parallel to the flow direction of the airflow), which can greatly reduce the gas flow resistance, thereby enhancing the heat exchange effect.
- the cooling fan of the compressor of the present invention may adopt a front end axial air intake mode, in which the air outlet 9b of the volute 9 is located at the lower right side of the volute 9 (see Figs. 8 and 9), that is, The central portion of the front end of the volute 9 is provided with an axial air inlet 14 (see FIGS. 3 to 5, 8, and 9) that introduces the outside air into the central low pressure region of the cooling fan 11. Then, one airflow E of the airflow C flowing in the exhaust flow path formed by the shroud 10 is traversed to the other side of the compressor cylinder head 3 through one side of the compressor cylinder head 3, and the other airflow K passes through the crankcase. One side of the heat dissipation vent 16 of the 12 is circulated to the other side of the crankcase 12 to be discharged.
- the cooling fan of the compressor of the present invention may also adopt a side-side radial intake mode, that is, an axial intake mode of the central portion of the rear end of the volute 9 from the radial intake of the crankcase 12 to the rear end of the volute 9
- Radial intake holes 15 are provided on one or both sides of the motor casing or/and the crankcase 12, and the radial intake holes 15 introduce the outside atmosphere into the cooling fan 11.
- the central low pressure zone it should be noted that the optimum flow path from the radial air inlet 15 is through the partition 16a supporting the main bearing 16, and then guided into the central low pressure zone of the cooling fan 11, centrifugally pressurized The subsequent airflow is guided to the shroud 10 through the air outlet of the volute 9, and then discharged to the other side of the compressor cylinder head 3 through the side of the compressor cylinder head 3.
- the cooling fan of the compressor of the present invention can also adopt both the front axial suction and the side radial intake (in Figure 1, Figure 2, Figure 6, Figure 7, Figure 10, Figure 11). That is, the rear end of the volute 9 is radially inflated from one side of the crankcase 12 and then turned to the central portion of the rear end of the volute 9; the axial intake and the central portion of the front end of the volute 9 are axially assisted.
- Intake mode in the case of the intake mode: the air outlet 9c of the volute 9 is located on the upper side of the volute 9 (see Fig.
- an axial intake port 14 is provided in the central portion of the volute 9, and at the same time in the motor Radial intake is provided on one or both sides of the casing or/and the crankcase 12.
- the hole 15, the axial air inlet 14 and the radial air inlet 15 can introduce the outside atmosphere into the central low pressure region of the cooling fan 11, and the centrifugally pressurized air flow is guided to the airflow guide 10 through the air outlet of the volute 9. Then, it enters through the side of the compressor cylinder head 3 in the axial direction of the motor, and is discharged to the other side of the compressor cylinder head 3, and at the same time, a part of the centrifugally pressurized airflow is guided to the diversion through the air outlet of the volute 9. After the cover 10, it enters from the cylinder heat dissipation hole 18 of the crankcase, flows through the outer surface of the cylinder, and is discharged from the other cylinder heat dissipation hole 19.
- At least one intake passage passes through the direct connection motor to the intake port of the cooling fan or an exhaust passage of the shroud 10 to the direct-coupled motor 4 of the compressor, and passes through A part of the air flow generated by the guide cooling fan 11 is blown to cool the direct-coupled motor 4 (not shown).
- the cooling layout structure of the direct-coupled oil-free compressor of the present invention is directed to the main heat dissipating member cylinder head 3 and the cylinder 2 of the compressor by using the volute casing 9 and the shroud 10 structure to construct the airflow generated by the centrifugal cooling fan 11 At the same time, the layout structure in which the cooling air crosses the cylinder head 3 is adopted, whereby the compressor can be effectively cooled, thereby reducing the heat load of the compressor.
- the cooling layout structure of the direct-connected oil-free compressor of the present invention, the cooling fan 11, the cylinder 2, the cylinder head 3, the volute 9 and the shroud 10 can be arranged in multiple groups at the same time and share a direct-coupled motor 4 .
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Abstract
Description
本发明属于压缩机技术领域，涉及压缩机的冷却系统，具体地说涉及一种无油压缩机的冷却布局结构，更具体地说涉及一种直联式无油压缩机的冷却布局构造。The invention belongs to the technical field of compressors, and relates to a cooling system of a compressor, in particular to a cooling layout structure of an oil-free compressor, and more particularly to a cooling layout structure of a direct-connected oil-free compressor.
现有无油压缩机尤其是直联式无油压缩机，毫无例外地配置有基于冷却风扇的冷却系统，借此将压缩机的压缩热、摩擦热和电机产生的热量散发出去，从而达到降低压缩机热负荷以保证压缩机工作可靠性的目的。众所周知，压缩热和摩擦热是压缩机的最主要热源，主要聚集在缸头处；而驱动压缩机运转的直联电机，其所产生的热量则大多聚集在定子和转子处。围绕上述热源的分布特点，当前直联式无油压缩机的冷却系统布局有两种形式：1)将冷却风扇布置在电机的尾座处并由电机轴带动，其产生的冷却风首先冷却电机，然后在导流罩壳的引导下吹向并冷却压缩机的缸头；2)将冷却风扇布置在压缩机的曲轴箱内并由曲柄或曲轴驱动，其所产生的冷却风则直接吹向缸套、活塞、连杆等组件，然后再被引向压缩机的缸头并对缸头实施冷却。The existing oil-free compressor, especially the direct-connected oil-free compressor, is equipped with a cooling system based on a cooling fan without exception, thereby dissipating the compression heat of the compressor, the frictional heat and the heat generated by the motor, thereby achieving Reduce the heat load of the compressor to ensure the reliability of the compressor. It is well known that compression heat and friction heat are the main heat sources of the compressor, mainly concentrated at the cylinder head; while the direct-coupled motors that drive the compressors run, the heat generated is mostly concentrated at the stator and the rotor. According to the distribution characteristics of the above heat sources, the cooling system layout of the current direct-connected oil-free compressor has two forms: 1) The cooling fan is arranged at the tailstock of the motor and driven by the motor shaft, and the cooling air generated by the cooling air first cools the motor. Then, under the guidance of the shroud casing, the cylinder head of the compressor is blown and cooled; 2) the cooling fan is arranged in the crankcase of the compressor and driven by the crank or the crankshaft, and the cooling air generated by the cooling fan is directly blown toward The cylinder liner, piston, connecting rod and other components are then led to the cylinder head of the compressor and the cylinder head is cooled.
上述传统直联式无油压缩机的冷却布局方案，其优点是结构布局紧凑，但它的缺点同样明显：第一种方案中，冷却风扇布置在电机的尾座处，由于距离压缩机的缸头较远，因此对压缩机缸头的冷却效果较差；第二种方案中，虽然风扇距离缸头这个主热源较近，但由于冷却风受到气缸和曲轴箱的约束和阻挡，致使吹向缸头的气流常常出现冷却盲区，由此影响了压缩机的散热效果。The cooling layout scheme of the above-mentioned conventional direct-connected oil-free compressor has the advantages of compact structure, but its disadvantages are also obvious: in the first scheme, the cooling fan is arranged at the tailstock of the motor, due to the cylinder of the distance compressor The head is far away, so the cooling effect on the cylinder head of the compressor is poor. In the second scheme, although the fan is closer to the main heat source of the cylinder head, the cooling air is restrained and blocked by the cylinder and the crankcase, causing the blowing direction. The airflow in the cylinder head often presents a cooling dead zone, which affects the heat dissipation effect of the compressor.
发明内容 Summary of the invention
针对现有直联式无油压缩机冷却系统布局存在的不足，本发明提供一种直联式无油压缩机的冷却布局构造，目的在于有效冷却压缩机的缸头，从而降低压缩机的热负荷。In view of the deficiencies in the layout of the existing direct-connected oil-free compressor cooling system, the present invention provides a cooling layout structure of a direct-coupled oil-free compressor, which aims to effectively cool the cylinder head of the compressor, thereby reducing the heat of the compressor. load.
为了实现上述目的，本发明提供一种直联式无油压缩机的冷却布局构造，包括冷却风扇、气缸和缸盖，设置有蜗壳和导流罩，所述蜗壳与冷却风扇的扇叶呼应设置，所述冷却风扇与压缩机电机轴相联接，所述导流罩布置在压缩机的侧旁处，导流罩的气道与蜗壳的排气流道相互对接，导流罩至少设置有一条气道通往压缩机的缸盖处；冷却风扇所产生的气流的一部分或者全部被蜗壳及导流罩引导至压缩机的缸盖处，并以横渡缸盖的流动方式掠过缸盖的外表面。In order to achieve the above object, the present invention provides a cooling layout structure of a direct-coupled oil-free compressor, including a cooling fan, a cylinder, and a cylinder head, and is provided with a volute and a shroud, the volute and the fan of the cooling fan Correspondingly, the cooling fan is coupled to the compressor motor shaft, the shroud is disposed at a side of the compressor, and the air passage of the shroud and the exhaust runner of the volute are butted against each other, and the shroud is at least An air passage is provided to the cylinder head of the compressor; part or all of the airflow generated by the cooling fan is guided by the volute and the shroud to the cylinder head of the compressor, and is swept by the flow across the cylinder head The outer surface of the cylinder head.
上述冷却风扇为离心式风扇构造，冷却风扇及蜗壳紧邻压缩机曲轴箱布置。The cooling fan is a centrifugal fan structure, and the cooling fan and the volute are arranged next to the compressor crankcase.
上述缸盖上设置有布局走向与掠过缸盖外表面气流流动方向一致的顺向肋片构造。The cylinder head is provided with a directional rib structure in a layout direction that is consistent with the flow direction of the air flowing over the outer surface of the cylinder head.
上述气缸上设置有布局走向与掠过气缸外表面气流流动方向一致的顺向肋片构造。The cylinder is provided with a forward rib structure in which the layout direction is consistent with the flow direction of the airflow passing over the outer surface of the cylinder.
上述压缩机的冷却风扇采用前端轴向进气方式，在蜗壳前端的中心部位区域设置有轴向进气口，所述轴向进气口将外界大气导入冷却风扇的中心低压区。The cooling fan of the compressor adopts a front end axial air intake mode, and an axial air inlet is provided at a central portion of the front end of the volute, and the axial air inlet introduces the outside air into a central low pressure region of the cooling fan.
上述压缩机的冷却风扇采用先从曲轴箱的一侧径向进气再转向蜗壳后端的中心部位区域轴向进气方式，在电机壳罩或/和曲轴箱的一侧或两侧开设有径向进气孔，所述径向进气孔将外界大气导入冷却风扇的中心低压区。The cooling fan of the above compressor adopts an axial air intake mode from a radial inlet of one side of the crankcase to a central portion of the rear end of the volute, and is opened on one side or both sides of the motor casing or/and the crankcase. There is a radial air inlet opening that directs the outside atmosphere into the central low pressure region of the cooling fan.
上述压缩机的冷却风扇同时采用蜗壳后端从曲轴箱的一侧径向进气再转向蜗壳后端的中心部位区域轴向进气和蜗壳前端的中心部位区域轴向辅助进气两种进气方式，在蜗壳的中心部位区域设置有轴向进气口、同时在电机壳罩或/和 曲轴箱的一侧或两侧开设有径向进气孔，所述轴向进气口和径向进气孔均可将外界大气导入冷却风扇的中心低压区。The cooling fan of the above compressor adopts the rear end of the volute from the radial intake of one side of the crankcase and then the central portion of the rear end of the volute. The axial intake and the central portion of the front end of the volute are axially assisted. In the air intake mode, an axial air inlet is provided in the central portion of the volute, and at the same time in the motor casing or/and A radial air inlet hole is defined in one side or both sides of the crankcase, and the axial air inlet and the radial air inlet hole can introduce the outside atmosphere into the central low pressure region of the cooling fan.
离心增压后的气流经蜗壳出气口引导至导流罩后再沿电机轴向方向经压缩机缸盖的一侧进入，到压缩机缸盖的另一侧排出，并且同时，一部分离心增压后的气流经蜗壳出气口引导至导流罩后，从曲轴箱的一侧气缸散热孔进入，流过气缸外表面散热肋片后，从另一侧气缸散热孔排出。The centrifugally pressurized airflow is guided to the shroud through the volute air outlet, and then enters through the side of the compressor cylinder head in the axial direction of the motor, and is discharged to the other side of the compressor cylinder cover, and at the same time, a part of the centrifugal increase After the compressed airflow is guided to the shroud through the volute air outlet, it enters from the cylinder cooling hole of one side of the crankcase, flows through the outer surface of the cylinder and is discharged from the cooling hole of the other cylinder.
至少有一条进气通道经直联电机处通往冷却风扇的进气口或导流罩的一条排气通道通往压缩机的直联电机处，并经其引导冷却风扇产生的部分气流吹拂冷却直联电机。At least one intake passage is connected to the direct-coupled motor of the compressor via a direct-coupled motor to the intake port of the cooling fan or an exhaust passage of the shroud, and is cooled by a portion of the airflow generated by the guide cooling fan Directly connected motor.
上述冷却风扇、气缸、缸盖、蜗壳和导流罩可多组同时布置并共用一台直联电机。The above cooling fan, cylinder, cylinder head, volute and shroud can be arranged in multiple groups at the same time and share a direct-coupled motor.
本发明一种直联式无油压缩机的冷却布局构造，由于采用蜗壳和导流罩构造将离心式冷却风扇产生的气流引导至压缩机的主要散热件缸盖和气缸处，并采用让冷却风横渡缸盖的布局构造，据此可以有效对压缩机实施冷却，从而降低压缩机的热负荷。The cooling layout structure of the direct-coupled oil-free compressor of the present invention is that the airflow generated by the centrifugal cooling fan is guided to the main heat dissipating cylinder head and the cylinder of the compressor by using a volute and a shroud structure, and The cooling wind crosses the layout of the cylinder head, whereby the compressor can be effectively cooled, thereby reducing the heat load of the compressor.
图1是本发明一种直联式无油压缩机冷却布局构造采用侧旁径向进气方案的轴测剖视图；1 is a perspective sectional view showing a cooling arrangement of a direct-connected oil-free compressor of the present invention using a side-side radial air intake scheme;
图2是图1所示本发明一种直联式无油压缩机冷却布局构造实施例的气体流动路径示意图；Figure 2 is a schematic view showing the gas flow path of the cooling layout configuration of the direct-connected oil-free compressor of the present invention shown in Figure 1;
图3是本发明一种直联式无油压缩机冷却布局构造采用前端轴向进气方案的轴测示意图； 3 is a schematic view showing the axial measurement of a front-end axial air intake scheme of a direct-connected oil-free compressor cooling layout structure according to the present invention;
图4是图3所示本发明一种直联式无油压缩机冷却布局构造实施例的另一个方向轴测图；Figure 4 is a perspective view showing another direction of the cooling layout configuration of the direct-connected oil-free compressor of the present invention shown in Figure 3;
图5是图3所示本发明一种直联式无油压缩机冷却布局构造实施例的纵剖图；Figure 5 is a longitudinal sectional view showing a cooling layout configuration of a direct-connected oil-free compressor of the present invention shown in Figure 3;
图6是图3所示本发明一种直联式无油压缩机冷却布局构造实施例的横剖图；Figure 6 is a cross-sectional view showing a cooling layout configuration of a direct-connected oil-free compressor of the present invention shown in Figure 3;
图7是本发明一种直联式无油压缩机冷却布局构造同时采用前端轴向进气和侧旁径向进气的轴测示意图；7 is a schematic view showing the axial layout of a direct-connected oil-free compressor cooling layout structure using both front-end axial intake and side-side radial intake;
图8是本发明一种直联式无油压缩机冷却布局构造采用前端轴向进气方案实施例的气体流动路径的轴测示意图之一；8 is a schematic view showing the axial flow of a gas flow path of a front-end axial air intake scheme of a direct-connected oil-free compressor cooling layout structure according to the present invention;
图9是本发明一种直联式无油压缩机冷却布局构造采用前端轴向进气方案实施例的气体流动路径的轴测示意图之二。9 is a second axial view of a gas flow path of a front-end axial air intake scheme embodiment of a direct-connected oil-free compressor cooling layout structure according to the present invention.
图10是本发明一种直联式无油压缩机冷却布局构造采用压缩机的冷却风扇同时采用蜗壳后端从曲轴箱的一侧径向进气再转向蜗壳后端的中心部位区域轴向进气和蜗壳前端的中心部位区域轴向辅助进气两种进气方案实施例的轴测示意图。Figure 10 is a schematic diagram of a direct-connected oil-free compressor cooling layout structure of the present invention using a compressor cooling fan while using a volute rear end from a side of the crankcase and then to the center of the volute Schematic diagram of the axially auxiliary intake two intake schemes of the central portion of the intake and volute front ends.
图11是本发明一种直联式无油压缩机冷却布局构造采用压缩机的冷却风扇同时采用蜗壳后端从曲轴箱的一侧径向进气再转向蜗壳后端的中心部位区域轴向进气和蜗壳前端的中心部位区域轴向辅助进气两种进气方案实施例的气体流动路径的轴测示意图。11 is a cooling arrangement of a direct-connected oil-free compressor according to the present invention, which uses a cooling fan of a compressor and simultaneously adopts a volute rear end from a side of the crankcase to the central portion of the rear end of the volute. A schematic view of the axial flow of the gas flow path of the embodiment of the intake and volute front end regions of the axially auxiliary intake two intake embodiments.
下面以具体实施例对本发明作进一步描述，参见图1-11： The present invention is further described below by way of specific embodiments, see Figures 1-11:
一种直联式无油压缩机的冷却布局构造，包括冷却风扇11、气缸2和缸盖3，本发明的压缩机与电机4直联连接，其中电机4由转子4a和定子4b组成，电机4的转轴5与压缩机的曲柄6紧固连接或者转轴5与压缩机的曲柄6为一体结构制作(如图5所示)，电机4直接驱动压缩机的连杆7和活塞8运转；需要说明的是，本发明的气缸2的数量可以是一个也可以是两个，相应地也有与之数量呼应设置的连杆7和活塞8，当采用双气缸2的型式时，一种最佳布局是让这两个气缸2分置在电机4的两轴端(如图5所示)；为了获得较佳的冷却效果，本发明的特色在于：设置有蜗壳9和导流罩10，所述蜗壳9与压缩机的冷却风扇11的扇叶呼应设置(参见图1、图2、图5和图6)，亦即一方面蜗壳9包容或半包容冷却风扇11设置、另一方面冷却风扇11产生的气流主要被蜗壳9引导，上述导流罩10可以承接引导冷却风扇11所生产的气流，其中导流罩10布置在压缩机的侧旁处(包括布置在压缩机的曲轴箱12的前端部位侧旁、即沿转轴5的轴向方向看导流罩10的主体部分较之曲轴箱12的主体部分更加远离电机4但又紧邻曲轴箱12进行布置，此外还包括布置在压缩机的曲轴箱12的周向部位侧旁、即紧邻曲轴箱12布置但又在转轴5或曲柄6的回转半径方向上看导流罩10的主体部分比曲轴箱12的主体部分更加远离转轴5的回转轴线，如图5和图6所示)，导流罩10的气道10a与蜗壳9的排气流道相互对接，导流罩10至少设置有一条气道10a通往压缩机的缸盖3处，冷却风扇11所产生的气流的一部分或者全部被蜗壳9及导流罩10引导至压缩机的缸盖3处，并以横渡缸盖3的流动方式掠过缸盖3的外表面；需要指出的是，本发明中的蜗壳9与导流罩10可以为一体结构制作、也可以是各自独立制作后再紧固连接在一起，另外，曲轴箱12甚至也可以参与构成为蜗壳9或/和导流罩10的一部分；此外
还需要说明的是，本发明中所说的气流以横渡缸盖3的流动方式掠过缸盖3的外表面是指：气流从缸盖3的一个或若干个边沿(包括直边边沿、折边边沿、圆弧边沿)进入并掠过缸盖3的外表面后从缸盖3的其他边沿处(包括直边边沿、折边边沿、圆弧边沿)流出；为了看到更加清楚，图2给出了本发明一种直联式无油压缩机冷却布局构造实施例的气体流动路径示意图：其中外界大气进入径向进气孔15的气流A→穿越主轴承隔板的气流B→被冷却风扇11驱动而在蜗壳9和排气流道中流动的气流C(其中冷却风扇11的转向为n)→气道10a中流动的气流D→横渡缸盖3的气流E→散向外界大气的气流F；显然，本发明由于采用蜗壳9和导流罩10构造将离心式冷却风扇11产生的气流引导至压缩机的主要散热件缸盖3和气缸2处，并采用让冷却风横渡缸盖3的布局构造，据此可以有效对压缩机实施冷却，从而降低压缩机的热负荷。A cooling layout structure of a direct-connected oil-free compressor includes a
本发明为了更好地紧凑布局，冷却风扇11可以采用离心式风扇构造，此时冷却风扇11及蜗壳9紧邻压缩机曲轴箱12布置，并且最佳布局方案是将冷却风扇11及蜗壳9布置在压缩机的曲轴箱12的前端部位侧旁、即沿转轴5的轴向方向看蜗壳9的主体部分较之曲轴箱12的主体部分更加远离电机4但又紧邻曲轴箱12进行布置(如图5所示)。In order to achieve a better compact layout, the
本发明为了更加有效地冷却压缩机，在缸盖3上设置有布局走向与掠过缸盖3外表面处气流流动方向一致的顺向肋片13构造(参见如2)，所谓顺向是指肋片13的条状隆起部位其条向走势与气流流动方向大体一致(最佳布局为与气流流动方向平行设置)，这样可以大大减少气体流动阻力，从而加强换热效果。同样地，本发明为了更加有效地冷却压缩机，可以在气缸2上设置有布局走向与掠过气缸2外表面气流流动方向一致的肋片构造(图中未示出)，所谓顺向是
指肋片的条状隆起部位其条向走势与气流流动方向大体一致(最佳布局为与气流流动方向平行设置)，这样可以大大减少气体流动阻力，从而加强换热效果。In order to more effectively cool the compressor, the
本发明中的压缩机的冷却风扇可以采用前端轴向进气方式，该进气方式时：蜗壳9出气口9b位于蜗壳9的右下侧(参见图图8、图9)，即在蜗壳9前端的中心部位区域设置有轴向进气口14(参见图3至图5、图8、图9)，所述轴向进气口14将外界大气导入冷却风扇11的中心低压区，然后经导流罩10形成的排气流道中流动的气流C的一路气流E经压缩机缸盖3的一侧横渡到压缩机缸盖3的另一侧排出、另一路气流K经曲轴箱12的一侧散热通风孔16横渡到曲轴箱12的另一侧散热通风孔17排出。The cooling fan of the compressor of the present invention may adopt a front end axial air intake mode, in which the air outlet 9b of the
本发明中的压缩机的冷却风扇也可以采用侧旁径向进气方式，即先从曲轴箱12的一侧径向进气再转向蜗壳9后端的中心部位区域轴向进气方式，在电机壳罩或/和曲轴箱12的一侧或两侧上开设有径向进气孔15(参见图1至图2)，所述径向进气孔15将外界大气导入冷却风扇11的中心低压区；需要说明的是，从径向进气孔15进入的气流，其最佳路线是穿越支承主轴承16的隔板16a，然后被引导入冷却风扇11的中心低压区，离心增压后的气流经蜗壳9出气口引导至导流罩10后再经压缩机缸盖3的一侧横渡到压缩机缸盖3的另一侧排出。The cooling fan of the compressor of the present invention may also adopt a side-side radial intake mode, that is, an axial intake mode of the central portion of the rear end of the
本发明中的压缩机的冷却风扇还可以同时采用前端轴向进气和侧旁径向进气两种进气方式(如图1、图2、图6、图7、图10、图11所示)，即蜗壳9后端从曲轴箱12的一侧径向进气再转向蜗壳9后端的中心部位区域轴向进气和蜗壳9前端的中心部位区域轴向辅助进气两种进气方式，该进气方式时：蜗壳9出气口9c位于蜗壳9的上侧(参见图11)，在蜗壳9的中心部位区域设置有轴向进气口14、同时在电机壳罩或/和曲轴箱12的一侧或两侧上开设有径向进气
孔15，所述轴向进气口14和径向进气孔15均可将外界大气导入冷却风扇11的中心低压区，离心增压后的气流经蜗壳9出气口引导至导流罩10后再沿电机轴向方向经压缩机缸盖3的一侧进入，到压缩机缸盖3的另一侧排出，并且同时，一部分离心增压后的气流经蜗壳9出气口引导至导流罩10后，从曲轴箱的一侧气缸散热孔18进入，流过气缸外表面散热肋片后，从另一侧气缸散热孔19排出。The cooling fan of the compressor of the present invention can also adopt both the front axial suction and the side radial intake (in Figure 1, Figure 2, Figure 6, Figure 7, Figure 10, Figure 11). That is, the rear end of the
本发明为了冷却电机4，至少有一条进气通道经直联电机处通往冷却风扇的进气口或导流罩10的一条排气通道通往压缩机的直联电机4处，并经其引导冷却风扇11产生的部分气流吹拂冷却直联电机4(图中未示出)。In order to cool the motor 4, at least one intake passage passes through the direct connection motor to the intake port of the cooling fan or an exhaust passage of the
本发明一种直联式无油压缩机的冷却布局构造，由于采用蜗壳9和导流罩10构造将离心式冷却风扇11产生的气流引导至压缩机的主要散热件缸盖3和气缸2处，并采用让冷却风横渡缸盖3的布局构造，据此可以有效对压缩机实施冷却，从而降低压缩机的热负荷。The cooling layout structure of the direct-coupled oil-free compressor of the present invention is directed to the main heat dissipating
本发明一种直联式无油压缩机的冷却布局构造，所述冷却风扇11、气缸2、缸盖3、蜗壳9和导流罩10可多组同时布置并共用一台直联电机4。The cooling layout structure of the direct-connected oil-free compressor of the present invention, the
上述实施例仅为本发明的若干较佳实施例，并非依此限制本发明的保护范围，故：凡依照本发明的结构、形状、原理所做的各种等效变化，均应涵盖在本发明的保护范围之内。 The above embodiments are only a few preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, various equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered. Within the scope of protection of the invention.
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