CN222668353U - A combined air compressor - Google Patents

Abstract

The utility model belongs to the technical field of air compressors, and discloses a combined air compressor. The combined air compressor comprises a centrifugal unit, a screw unit, a first heat dissipation assembly and a cooler, wherein the centrifugal unit is provided with an air inlet, an air inlet of the screw unit is communicated with an air outlet of the centrifugal unit, an air inlet of the first heat dissipation assembly is communicated with an air outlet of the screw unit, a water inlet of the cooler is communicated with a water outlet of the first heat dissipation assembly, and a water outlet of the cooler is communicated with a water inlet of the first heat dissipation assembly. The gas introduced is compressed through the centrifugal unit, then is compressed through the screw unit, and the gas with different flow rates can be compressed through adjusting the working parameters of the centrifugal unit and the screw unit, so that the working range is widened. Aiming at the occasion of large flow, the working efficiency can be further improved. In addition, in the compression, through the cooperation of first radiator unit and cooler jointly, to compressed gas cooling, realize the hydrologic cycle, compression and process cooling realize the integration.

Description

Combined air compressor

Technical Field

The utility model relates to the technical field of air compressors, in particular to a combined air compressor.

Background

The air compressor is a device for converting mechanical energy into gas pressure energy to continuously produce compressed air, and is widely applied to the fields of machine manufacturing, iron and steel, metallurgy, shipbuilding, textile, electronics, chemical industry, petroleum, mine, light industry, food, medicine and the like.

There are various types of air compressors, such as centrifugal type and screw type, the existing centrifugal type air compressor is mainly used in high-flow occasions, multistage impellers are adopted for step-by-step compression in order to obtain higher-pressure gas, and the structure is complex; the existing screw air compressor is mainly used in low-flow occasions, and the larger screw air compressor is high in manufacturing cost and energy consumption. In a word, the existing air compressor has the problems of narrow working range or low working efficiency, and cannot adapt to the application requirements of many working conditions.

Therefore, a combination air compressor is needed to solve the above technical problems.

Disclosure of utility model

The utility model aims to provide a combined air compressor which has wider working range, can adapt to application requirements of a plurality of working conditions, has higher working efficiency, can realize water circulation and realizes integration of compression and process cooling.

To achieve the purpose, the utility model adopts the following technical scheme:

a combination air compressor, comprising:

the centrifugal unit is provided with an air inlet;

The air inlet of the screw unit is communicated with the air outlet of the centrifugal unit;

The air inlet of the first heat dissipation assembly is communicated with the air outlet of the screw unit, and the air outlet of the first heat dissipation assembly is used for outputting compressed gas;

The cooling device comprises a centrifugal unit, a screw unit, a first heat dissipation assembly, a cooler, a water inlet and a water outlet, wherein the centrifugal unit, the screw unit and the first heat dissipation assembly form a gas path, the cooler is used for cooling gas through water, the water inlet of the cooler is communicated with the water outlet of the first heat dissipation assembly, and the water outlet of the cooler is communicated with the water inlet of the first heat dissipation assembly.

Preferably, the centrifugal unit comprises a first motor, a first-stage machine head and a second-stage machine head, wherein the first-stage machine head and the second-stage machine head are respectively arranged at two output ends of the first motor, the first-stage machine head is provided with an air inlet, an air outlet of the first-stage machine head is communicated with an air inlet of the second-stage machine head, and an air outlet of the second-stage machine head is communicated with an air inlet of the screw unit.

Preferably, the cooler is arranged between the air outlet of the primary machine head and the air inlet of the secondary machine head.

Preferably, the combined air compressor comprises a first water pipe and a second water pipe, wherein two ends of the first water pipe are respectively connected with the water inlet of the cooler and the water outlet of the first heat dissipation assembly, two ends of the second water pipe are respectively connected with the water outlet of the cooler and the water inlet of the screw unit, and the water outlet of the screw unit is communicated with the water inlet of the first heat dissipation assembly.

Preferably, the screw unit comprises a compression assembly and a water-vapor separation piece, wherein the water-vapor separation piece is used for separating gas and liquid, the water-vapor separation piece is arranged on the compression assembly, an inlet of the water-vapor separation piece is communicated with an air outlet and a water outlet of the compression assembly, and an air inlet and a water inlet of the first heat dissipation assembly are communicated with an inner cavity of the water-vapor separation piece.

Preferably, the combined air compressor comprises a first water pipe and a fourth water pipe, wherein two ends of the first water pipe are respectively connected with the water inlet of the cooler and the water outlet of the first heat dissipation assembly, and two ends of the fourth water pipe are respectively connected with the water outlet of the cooler and the water inlet of the first heat dissipation assembly.

Preferably, the cooler is arranged between the air outlet of the centrifugal unit and the air inlet of the screw unit.

Preferably, the combined air compressor comprises a fifth water pipe and a sixth water pipe, the water inlet of the cooler and the water outlet of the first heat dissipation assembly are connected through the fifth water pipe, and the water outlet of the cooler and the water inlet of the screw unit are connected through the sixth water pipe.

Preferably, the first heat dissipation assembly includes a heat sink and a fan, and the fan is fixed to the heat sink.

Preferably, the combined air compressor further comprises an air inlet filter, and the air inlet filter is arranged at the air inlet and is used for filtering gas.

The utility model has the beneficial effects that:

The utility model provides a combined air compressor which comprises a centrifugal unit, a screw unit, a first heat dissipation assembly and a cooler. The gas introduced is compressed through the centrifugal unit firstly and then is compressed through the screw unit, and the working range is widened by adjusting the working parameters of the centrifugal unit and the screw unit according to the actual compression requirement of the gas and compressing the gas with different flow rates. For the high-flow situation, the advantage of high flow and high efficiency of the centrifugal unit is utilized, the centrifugal unit is used for precompression, the volume flow of the compressed gas is reduced, and then the compressed gas enters the screw unit for recompression, so that the efficiency of compressing the high-flow gas can be improved. Aiming at the occasion of low flow, the rotating speed of the centrifugal unit can be regulated down, at the moment, the flow of the centrifugal unit is reduced, the pressure is reduced, then the advantage of the low flow high pressure ratio of the screw unit is utilized, and the compressed gas is recompressed through the screw unit, so that the working condition requirement of low flow is met. In addition, in the compression process, the cooler cools the compressed gas through water, and the first heat dissipation assembly dissipates heat and cools the compressed gas discharged from the screw unit, so that the compressed gas is obtained. Because the water outlet of the cooler is communicated with the water inlet of the first heat dissipation component, the first heat dissipation component dissipates heat of water flowing out of the cooler, and because the water outlet of the first heat dissipation component is communicated with the water inlet of the cooler, the water after heat dissipation enters the cooler and continuously cools the compressed gas, so that the water circulation is realized, the cost is saved, the operation of the combined air compressor is simpler, the working efficiency is higher, and the integration of compression and process cooling is realized.

Drawings

Fig. 1 is a schematic structural diagram of a combined air compressor provided by the utility model.

In the figure:

1. The centrifugal machine comprises a centrifugal machine unit, a 10, an air inlet, a 11, a first motor, a 12, a first machine head, a 13, a second machine head, a 2, a screw machine unit, a 21, a compression assembly, a 211, a second motor, a 212, a screw machine head, a 22, a water vapor separating piece, a 3, a first heat radiating assembly, a 31, a radiator, a 311, an exhaust port, a 32, a fan, a 4, a first cooler, a 5, a first water pipe, a 6, a second water pipe, a 7, a first gas pipe, a 8, a third water pipe, a 9, an air inlet filter and 100, and water.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, the utility model provides a combined air compressor, which comprises a centrifugal unit 1, a screw unit 2, a first heat dissipation assembly 3 and a cooler, wherein the centrifugal unit 1 is provided with an air inlet 10, an air inlet of the screw unit 2 is communicated with an air outlet of the centrifugal unit 1, the first heat dissipation assembly 3 is used for reducing the temperature of compressed air and water 100, the air inlet of the first heat dissipation assembly 3 is communicated with an air outlet of the screw unit 2, the air outlet of the first heat dissipation assembly 3 is used for outputting compressed air, the cooler is arranged in an air path formed by the centrifugal unit 1, the screw unit 2 and the first heat dissipation assembly 3, the cooler is used for cooling the air through water 100, a water inlet of the cooler is communicated with a water outlet of the first heat dissipation assembly 3, and a water outlet of the cooler is communicated with a water inlet of the first heat dissipation assembly 3. The gas introduced is compressed through the centrifugal unit 1 and then is compressed through the screw unit 2, and the working parameters of the centrifugal unit 1 and the screw unit 2 can be adjusted according to the actual compression requirement on the gas, so that the gas with different flow rates is compressed, and the working range is widened. For the high-flow situation, the advantage of high flow and high efficiency of the centrifugal unit 1 is utilized, the centrifugal unit 1 is used for precompression, the volume flow of the compressed gas is reduced, and then the compressed gas enters the screw unit 2 for recompression, so that the efficiency of compressing the high-flow gas can be improved. Aiming at the occasion of small flow, the rotating speed of the centrifugal unit 1 can be regulated down, at the moment, the flow of the centrifugal unit 1 is reduced, the pressure is reduced, then the advantage of the small flow high pressure ratio of the screw unit 2 is utilized, and the compressed gas is recompressed through the screw unit 2, so that the working condition requirement of small flow is met. In addition, during the compression process, the cooler cools the compressed gas by the water 100, and the first heat dissipation assembly 3 dissipates heat to cool the compressed gas discharged from the screw unit 2, thereby obtaining the compressed gas. Because the water outlet of the cooler is communicated with the water inlet of the first heat dissipation component 3, the first heat dissipation component 3 dissipates heat of the water 100 flowing out of the cooler, because the water outlet of the first heat dissipation component 3 is communicated with the water inlet of the cooler, the dissipated water 100 enters the cooler and continuously cools the compressed gas, water circulation is realized, cost is saved, the operation of the combined air compressor is simpler, the working efficiency is higher, and the integration of compression and process cooling is realized.

In this process, the flow of water 100 is mainly achieved by the pressure pushing of the compressed gas.

Alternatively, in the present embodiment, the centrifugal unit 1 includes a first motor 11, a first-stage handpiece 12, and a second-stage handpiece 13, where the first-stage handpiece 12 and the second-stage handpiece 13 are respectively disposed at two output ends of the first motor 11, the first-stage handpiece 12 is provided with an air inlet 10, an air outlet of the first-stage handpiece 12 is communicated with an air inlet of the second-stage handpiece 13, and an air outlet of the second-stage handpiece 13 is communicated with an air inlet of the screw unit 2. Specifically, the primary handpiece 12 and the secondary handpiece 13 each include an impeller. The first motor 11 is started to drive the impellers of the first-stage machine head 12 and the impellers of the second-stage machine head 13 to rotate, air enters the first-stage machine head 12 through the air inlet 10, the impellers of the first-stage machine head 12 rotate to compress gas once, the compressed gas enters the air inlet of the second-stage machine head 13, the impellers of the second-stage machine head 13 rotate to compress gas twice, and the compressed gas enters the screw machine set 2 from the air inlet of the screw machine set 2. The centrifugal unit 1 adopts a two-stage design, and air is compressed twice through the centrifugal unit 1, so that the compression efficiency is further improved, the air is precompressed to 0.2-0.3MPaG, the air volume is reduced to 1/3-1/4 of the original air, and the screw unit 2 is also reduced.

Further, in the present embodiment, a cooler is provided between the air outlet of the primary handpiece 12 and the air inlet of the secondary handpiece 13, and the cooler is the first cooler 4. The first cooler 4 is arranged to cool down the gas compressed by the first-stage machine head 12, prevent the second-stage machine head 13 from excessively high temperature when the second-stage machine head 13 compresses the gas, overheat the second-stage machine head 13 and reduce the compression work of the second-stage machine head 13.

Optionally, in this embodiment, the combined air compressor includes a first water pipe 5 and a second water pipe 6, two ends of the first water pipe 5 are respectively connected with the water inlet of the first cooler 4 and the water outlet of the first heat dissipation component 3, two ends of the second water pipe 6 are respectively connected with the water outlet of the first cooler 4 and the water inlet of the screw unit 2, and the water outlet of the screw unit 2 is communicated with the water inlet of the first heat dissipation component 3. After cooling the gas compressed by the first-stage machine head 12, the water in the first cooler 4 enters the screw unit 2 through the second water pipe 6, water lubrication is carried out on the screw unit 2, the gas compressed by the second-stage machine head 13 can be cooled, the cooled water 100 enters the first heat dissipation assembly 3 from the water outlet of the screw unit 2, heat dissipation and cooling are carried out, the cooled water 100 flows into the first cooler 4 again through the water outlet of the first heat dissipation assembly 3, and thus, a water loop is formed, and water circulation is realized. The screw machine set 2 is lubricated by water, the obtained compressed gas is oil-free, and the compressed gas has great advantages compared with an oil injection screw machine.

Further alternatively, in the embodiment, the combined air compressor further comprises a second heat dissipation component for reducing the temperature of the air and the water 100, wherein an air inlet of the second heat dissipation component is communicated with an air outlet of the secondary machine head 13, an air outlet of the second heat dissipation component is communicated with an air inlet of the screw machine set 2, an air inlet of the second heat dissipation component is communicated with an air outlet of the first cooler 4, and an air outlet of the second heat dissipation component is communicated with an air inlet of the screw machine set 2. The second heat dissipation component is used for dissipating heat of the gas compressed by the secondary machine head 13, so that the screw unit 2 is prevented from overheating when the screw unit 2 compresses the gas, and the second heat dissipation component is used for dissipating heat of the water 100 flowing out of the first cooler 4, so that the cooling effect of the water 100 is better. Alternatively, the structure of the second heat dissipation assembly is the same as that of the first heat dissipation assembly 3.

Optionally, in other embodiments, the combined air compressor includes a first water pipe 5 and a fourth water pipe, two ends of the first water pipe 5 are respectively connected with the water inlet of the first cooler 4 and the water outlet of the first heat dissipation assembly 3, and two ends of the fourth water pipe are respectively connected with the water outlet of the first cooler 4 and the water inlet of the first heat dissipation assembly 3. After cooling the gas compressed by the first-stage machine head 12, the water 100 in the first cooler 4 enters the first heat dissipation assembly 3 through the fourth water pipe to dissipate heat and cool, and the cooled water 100 flows into the first cooler 4 again through the water outlet of the first heat dissipation assembly 3, so that a water loop is formed, and water circulation is realized.

Optionally, a cooler is arranged between the air outlet of the centrifugal unit 1 and the air inlet of the screw unit 2, and the cooler is a second cooler. The second cooler is arranged to realize cooling of the gas compressed by the centrifugal unit 1 and prevent the screw unit 2 from overheating when the screw unit 2 compresses the gas.

Specifically, the combined air compressor comprises a fifth water pipe and a sixth water pipe, the water inlet of the second cooler is connected with the water outlet of the first heat dissipation assembly 3 through the fifth water pipe, and the water outlet of the second cooler is connected with the water inlet of the screw unit 2 through the sixth water pipe. After cooling the gas compressed by the secondary machine head 13, the water 100 in the second cooler enters the screw unit 2 through a sixth water pipe to cool the screw unit 2, the cooled water 100 enters the first heat dissipation component 3 from the water outlet of the screw unit 2 to dissipate heat and cool, and the cooled water 100 flows into the second cooler again through a fifth water pipe. Or the two ends of the sixth water pipe are respectively connected with the water outlet of the second cooler and the water inlet of the first heat dissipation component 3. After cooling the gas compressed by the secondary machine head 13, the water 100 in the second cooler directly enters the first heat dissipation component 3 to dissipate heat and cool, and the cooled water 100 flows into the second cooler again through the fifth water pipe.

Optionally, the screw unit 2 comprises a compression assembly 21 and a water-vapor separation piece 22, wherein the water-vapor separation piece 22 is used for separating gas and liquid, the water-vapor separation piece 22 is arranged on the compression assembly 21, an inlet of the water-vapor separation piece 22 is communicated with an air outlet and an water outlet of the compression assembly 21, and an air inlet of the first heat dissipation assembly 3 are communicated with an inner cavity of the water-vapor separation piece 22. The water 100 discharged from the compression assembly 21 is separated from the gas by the water-vapor separator 22, and furthermore, the water 100 enters the first heat sink assembly 3 from the water-vapor separator 22 mainly by the high pressure provided by the compressed gas. Alternatively, in the present embodiment, the water-vapor separator 22 has a barrel-like structure, and the processing is simple. Optionally, the compression assembly 21 and the water vapor separator 22 are integrally or detachably disposed.

Optionally, the combined air compressor includes a first air pipe 7, the first air pipe 7 penetrates through the water-vapor separation member 22, one end of the first air pipe 7 is connected to the air inlet of the first heat dissipation component 3, the other end of the first air pipe 7 is clamped in the water-vapor separation member 22, and the air inlet of the first air pipe 7 is upward. The first gas pipeline 7 penetrates through the water-vapor separation piece 22, so that the installation is convenient, and gas can be prevented from overflowing from the connecting port to the outside of the water-vapor separation piece 22. The other end of the first gas pipeline 7 is clamped in the water-steam separation piece 22, so that the further fixing function is realized. Optionally, the combined air compressor further includes a third water pipe 8, the third water pipe 8 penetrates through the water-vapor separation member 22, one end of the third water pipe 8 is connected to the water inlet of the first heat dissipation component 3, and the other end of the third water pipe 8 is located in the water-vapor separation member 22. The third water pipe 8 penetrates through the water-vapor separation piece 22, so that the installation is convenient, and water 100 can be prevented from overflowing from the connecting port to the outside of the water-vapor separation piece 22.

Alternatively, in the present embodiment, the compression assembly 21 includes the second motor 211 and the screw head 212, and the screw head 212 is provided at the output end of the second motor 211. The screw head 212 is moved by the second motor 211 to recompress the gas.

Alternatively, the first heat dissipating assembly 3 includes a heat sink 31 and a fan 32, the fan 32 being fixed to the heat sink 31. The air blown by the fan 32 enters the radiator 31 to cool the air and the water 100, and the compressed air is discharged from the exhaust port 311 of the radiator 31. Alternatively, the fan 32 may be an axial flow fan, and the radiator 31 may be a fin type heat exchanger.

Optionally, the combined air compressor further comprises an air intake filter 9, the air intake filter 9 being arranged at the air inlet 10 for filtering the air.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A combination air compressor, comprising:

A centrifugal unit (1), wherein the centrifugal unit (1) is provided with an air inlet (10);

The air inlet of the screw unit (2) is communicated with the air outlet of the centrifugal unit (1);

The air inlet of the first heat dissipation assembly (3) is communicated with the air outlet of the screw unit (2), and the air outlet of the first heat dissipation assembly (3) is used for outputting compressed air;

The cooling device comprises a centrifugal unit (1), a screw unit (2) and a first heat dissipation assembly (3), wherein the cooling device is arranged in a gas path formed by the centrifugal unit (1), the screw unit (2) and the first heat dissipation assembly (3), the cooling device is used for cooling gas through water (100), a water inlet of the cooling device is communicated with a water outlet of the first heat dissipation assembly (3), and a water outlet of the cooling device is communicated with a water inlet of the first heat dissipation assembly (3).

2. The combined air compressor according to claim 1, wherein the centrifugal unit (1) comprises a first motor (11), a first-stage machine head (12) and a second-stage machine head (13), the first-stage machine head (12) and the second-stage machine head (13) are respectively arranged at two output ends of the first motor (11), the first-stage machine head (12) is provided with the air inlet (10), an air outlet of the first-stage machine head (12) is communicated with an air inlet of the second-stage machine head (13), and an air outlet of the second-stage machine head (13) is communicated with an air inlet of the screw unit (2).

3. The combined air compressor according to claim 2, characterized in that the cooler is arranged between the air outlet of the primary handpiece (12) and the air inlet of the secondary handpiece (13).

4. A combined air compressor according to claim 3, characterized in that the combined air compressor comprises a first water pipe (5) and a second water pipe (6), wherein two ends of the first water pipe (5) are respectively connected with a water inlet of the cooler and a water outlet of the first heat dissipation assembly (3), two ends of the second water pipe (6) are respectively connected with a water outlet of the cooler and a water inlet of the screw unit (2), and a water outlet of the screw unit (2) is communicated with a water inlet of the first heat dissipation assembly (3).

5. The combined air compressor as claimed in claim 4, wherein the screw unit (2) comprises a compression assembly (21) and a water-vapor separation member (22), the water-vapor separation member (22) is used for separating gas and liquid, the water-vapor separation member (22) is arranged on the compression assembly (21), an inlet of the water-vapor separation member (22) is communicated with an air outlet and an water outlet of the compression assembly (21), and an air inlet of the first heat dissipation assembly (3) are communicated with an inner cavity of the water-vapor separation member (22).

6. A combined air compressor according to claim 3, characterized in that the combined air compressor comprises a first water pipe (5) and a fourth water pipe, wherein two ends of the first water pipe (5) are respectively connected with the water inlet of the cooler and the water outlet of the first heat dissipation assembly (3), and two ends of the fourth water pipe are respectively connected with the water outlet of the cooler and the water inlet of the first heat dissipation assembly (3).

7. The combined air compressor according to claim 1, characterized in that the cooler is arranged between the air outlet of the centrifugal unit (1) and the air inlet of the screw unit (2).

8. The combined air compressor according to claim 7, characterized in that the combined air compressor comprises a fifth water pipe and a sixth water pipe, the water inlet of the cooler and the water outlet of the first heat dissipation assembly (3) are connected through the fifth water pipe, and the water outlet of the cooler and the water inlet of the screw unit (2) are connected through the sixth water pipe.

9. The combined air compressor according to any one of claims 1-8, wherein the first heat dissipating assembly (3) comprises a heat sink (31) and a fan (32), the fan (32) being fixed to the heat sink (31).

10. The combination air compressor according to any one of claims 1-8, further comprising an air intake filter (9), the air intake filter (9) being arranged at the air inlet (10) for filtering gas.