CN111594461A

CN111594461A - Heat exchange type speed-increasing air pump

Info

Publication number: CN111594461A
Application number: CN202010452590.7A
Authority: CN
Inventors: 邢子义; 王升科; 张会明; 张超
Original assignee: Yantai Dongde Industrial Co Ltd
Current assignee: Yantai Dongde Industrial Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-08-28

Abstract

The invention relates to the technical field of centrifugal air compressors, in particular to a heat exchange type speed-increasing air pump. Including pump head, motor, the cooling water course has in the motor casing of motor, is different with prior art: a planetary friction roller type speed increaser is arranged in a front end cover of the motor, a motor shaft of the motor penetrates through the front end cover to be connected with a sun wheel of the speed increaser, and an output shaft of the speed increaser is connected with an impeller shaft of the pump head; lubricating oil circulates inside the speed increaser and inside the motor case. Compared with the prior art, the lubricating oil is introduced into the motor shell for circulation, and a water cooling system of the motor is used for heat exchange and cooling, so that the structure is compact, and the arrangement of pipelines is omitted. The lubricating oil is driven to circulate by utilizing pressure difference and gravity generated by oil splashing and/or centrifugal force of the speed increaser, so that a circulating oil way is simplified, and the speed increaser is convenient to process and assemble and is convenient to maintain later.

Description

Heat exchange type speed-increasing air pump

Technical Field

The invention relates to the technical field of centrifugal air compressors, in particular to a heat exchange type speed-increasing air pump.

Background

The air pump has the working principle that the two impellers rotate oppositely, the gaps between the impellers and the impellers, between the impellers and the casing and between the impellers and the wall plate are extremely small, so that the air inlet forms a vacuum state, air enters the air inlet cavity under the action of atmospheric pressure, then, two blades of each impeller, the wall plate and the casing form a sealing cavity, the air in the air inlet cavity is continuously brought to the air outlet cavity by the sealing cavity formed by the two blades in the rotating process of the impellers, and the impellers in the air outlet cavity are meshed with each other, so that the air between the two blades is extruded out, and the air is continuously conveyed to the air outlet from the air inlet in such a way of continuous operation.

Publication No. CN209687806U discloses an oilless centrifugal air compressor for hydrogen fuel cell, which supplies air to the hydrogen fuel cell stack by driving a centrifugal supercharger to rotate after the heat exchange type high-speed motor is powered on. Because this patent uses the motor to directly drive centrifugal booster and rotates, two impeller pivoted rotational speeds in opposite directions are subject to high-speed motor's rotational speed, will improve centrifugal booster's power, or improve the rotational speed of motor, or add a speed increaser. The motor is originally a high-speed motor, the space for increasing the rotating speed is limited, and a series of problems of heat dissipation, lubrication, vibration, service life and the like are caused.

The invention of publication No. CN1432721A discloses a speed increasing machine for a supercharger capable of increasing the speed of an input shaft, which is of a friction roller type and generates a large amount of heat during a high-speed friction operation, and an oil pump coupled to the input shaft for driving a lubricating oil to circulate in a speed increasing machine casing and the inside thereof and lubricating and cooling a power transmission mechanism such as a center roller. But still has the problem that the structure is complicated, and the oil circuit design is complicated, and the processing assembly is difficult. Meanwhile, as the lubricating oil only circulates in the shell and the inside of the speed increaser, the path length is limited, a large amount of heat generated by the speed increaser is not dissipated in time in the high-speed friction running process, and high temperature is easily caused, so that the lubrication is ineffective, and the service life of the whole machine is influenced. If the pump body is led out of the pump body by a hose and then returns to the pump body after being cooled by a radiator, the structure is complex, the size is large, a fan is required to be additionally arranged by a client for radiating heat, and the difficulty of system layout is increased.

Disclosure of Invention

In order to overcome one of the problems or problems in the prior art, the invention discloses a heat exchange type speed-increasing air pump, which adopts the technical scheme that:

the utility model provides a heat transfer formula acceleration rate air pump, includes pump head, motor, have the cooling water course in the motor casing of motor, different with prior art: a planetary friction roller type speed increaser is arranged in a front end cover of the motor, a motor shaft of the motor penetrates through the front end cover to be connected with a sun wheel of the speed increaser, and an output shaft of the speed increaser is connected with an impeller shaft of the pump head; lubricating oil circulates inside the speed increaser and inside the motor case.

Further, the rear end cover of the motor comprises a rear end cover A and a rear end cover B which are arranged at intervals, and an oil tank is formed between the rear end cover A and the rear end cover B; the motor shaft is provided with an oil return channel which penetrates through the front end and the rear end of the motor shaft, a circulating oil passage is arranged in the motor shell and on the outer side or the inner side of the cooling water channel, an oil outlet channel is arranged in the front end cover and is communicated with the circulating oil passage and the inside of the speed increaser; the centrifugal force generated by the rotation of the sun wheel drives lubricating oil to enter the oil tank through the oil outlet channel and the circulating oil channel, and the lubricating oil in the oil tank returns to the speed increaser through the oil return channel.

Furthermore, a plurality of oil displacement fan blades are uniformly arranged on the end face and/or the circumferential circular face of the sun wheel.

Further, an oil filter is arranged in the oil tank.

Compared with the prior art, the invention has the beneficial effects that:

1. lubricating oil is introduced into the motor shell for circulation, a water cooling system of the motor is utilized for heat exchange and cooling, the structure is compact, and the arrangement of pipelines is omitted.

2. The invention utilizes the pressure difference and gravity generated by the rotating oil splash and/or centrifugal force of the speed increaser to drive the lubricating oil to circulate, simplifies the circulating oil path, and is convenient to process, assemble and maintain at later stage.

3. The motor designs at the back has the oil storage chamber, has promoted the circulated quantity of lubricating oil, satisfies lubricated heat dissipation demand, and the oil storage intracavity portion sets up oily filter, filters impurity and dirt in the lubricating oil, guarantees to supply with the lubricating oil clean of speed increaser. The filter is designed in the oil cavity at the rear end of the motor, so that the replacement and maintenance are convenient.

4. The cooling water route of motor casing is parallelly with lubricating oil circulation oil duct, plays the dual function of cooling motor stator coil and cooling lubricating oil promptly.

5. Lubricating oil passes through in the middle of the motor shaft, can be for the bearing cooling of motor, has solved the local overheated problem of high-speed motor bearing.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

A heat exchange type speed-increasing air pump as shown in fig. 1, which comprises a pump head 1 and a motor 2, wherein a cooling water channel 26 is arranged in a motor casing 22 of the motor 2, a planetary friction roller type speed increaser 3 is arranged in a front end cover 28 of the motor 2, a motor shaft 21 of the motor 2 passes through the front end cover 28 and is connected with a sun gear 31 of the speed increaser 3, and an output shaft of the speed increaser 3 is connected with an impeller shaft of the pump head 1; lubricating oil circulates inside the speed increaser 3 and inside the motor case 22.

Specifically, the rear end cover of the motor 2 comprises a rear end cover A23 and a rear end cover B24 which are arranged at intervals, and an oil tank 5 is formed between the rear end cover A23 and the rear end cover B24; the motor shaft 21 is provided with an oil return channel 25 penetrating through the front end and the rear end of the motor shaft, a circulating oil channel 27 is arranged in the motor shell 22 and outside the cooling water channel 26, an oil outlet channel 29 is arranged in the front end cover 28, and the oil outlet channel 29 is communicated with the circulating oil channel 27 and the inside of the speed increaser 3; the centrifugal force generated by the rotation of the sun gear 31 drives the lubricating oil to enter the oil tank 5 through the oil outlet channel 29 and the circulating oil channel 27, and the lubricating oil in the oil tank 5 returns to the speed increaser 3 through the oil return channel 25.

6 oil displacement fan blades 32 are uniformly arranged on the end face of the sun gear 31. An oil filter 6 is arranged in the oil tank 5.

The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can make many possible variations or modifications to the invention using the methods and techniques disclosed above, or to modify equivalent embodiments without departing from the scope of the invention. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.

Claims

1. The utility model provides a heat transfer formula acceleration rate air pump, includes pump head (1), motor (2), have cooling water course (26) in motor casing (22) of motor (2), its characterized in that: a planetary friction roller type speed increaser (3) is arranged in a front end cover (28) of the motor (2), a motor shaft (21) of the motor (2) penetrates through the front end cover (28) to be connected with a sun gear (31) of the speed increaser (3), and an output shaft of the speed increaser (3) is connected with an impeller shaft of the pump head (1); lubricating oil circulates inside the speed increaser (3) and inside the motor case (22).

2. The heat-exchanging accelerated air pump of claim 1, wherein: the rear end cover of the motor (2) comprises a rear end cover A (23) and a rear end cover B (24) which are arranged at intervals, and an oil tank (5) is formed between the rear end cover A (23) and the rear end cover B (24); the motor shaft (21) is provided with an oil return channel (25) penetrating through the front end and the rear end of the motor shaft, a circulating oil channel (27) is arranged in the motor shell (22) and on the outer side or the inner side of the cooling water channel (26), an oil outlet channel (29) is arranged in the front end cover (28), and the oil outlet channel (29) is communicated with the circulating oil channel (27) and the inside of the speed increaser (3); the centrifugal force generated by the rotation of the sun wheel (31) drives the lubricating oil to enter the oil tank (5) through the oil outlet channel (29) and the circulating oil channel (27), and the lubricating oil in the oil tank (5) returns to the speed increaser (3) through the oil return channel (25).

3. A heat exchanging accelerated air pump of claim 2 wherein: the end face and/or the circumferential circular face of the sun wheel (31) are/is evenly provided with a plurality of oil displacement fan blades (32).

4. A heat exchanging accelerated air pump of claim 2 wherein: an oil filter (6) is arranged in the oil tank (5).