CN101603537B - Air compressor - Google Patents

Abstract

The invention relates to an air compressor, which comprises a horizontal pump casing (1), a first cover (11), a second cover (12) and a fan (110), wherein the inside of the pump casing (1) is provided with a motor (10) and a compression pump driven by the motor (10); the inside of the compression pump is provided with a compressed airflow channel; the first cover (11) is provided with an air inlet (112); the second cover (12) is provided with a high-pressure air outlet (12a) and a cooling airflow vent (12b); a gap reserved between the periphery of the motor (10) and the pump casing (1) is used as an air source channel (D); the inside of the compression pump is also provided with a cooling airflow channel (E) isolated from the compressed airflow channel; and the front part and the rear part of the cooling airflow channel (E) are respectively communicated with the air source channel (D) and the cooling airflow vent (12b). Compared with the prior art, the air compressor can replace cooling air continuously and greatly improve the cooling effect of the compression pump, and has low energy consumption, simple and compact device structure and small volume, and allows the cooling airflow to penetrate the compression pump to be output into the outside to ensure the cooling efficiency.

Description

A kind of gas compressor

Technical field

The present invention relates to the technical field of gas compressor, especially relate to a kind of gas compressor that adopts the air-cooled type of cooling.

Background technique

Gas compressor is a kind of device that can make pressurized gas, has been widely used in industrial departments such as mining, chemical industry, metallurgy, machine-building, electric power, weaving, food, pharmacy, and gas compressor also is called as " universal machine " because of it is of many uses.Generally, the type of cooling of gas compressor is divided into water-cooled and air-cooled two kinds.Wherein, water-cooling pattern mainly is to allow cooling water by cylinder body and be arranged on the interlayer of the outer cooler of cylinder body, the cylinder body and the cooler of compressor is cooled off, thereby reach the purpose that reduces device operating temperature and compression back gas temperature.And air cooling way is the air intake by fan, the cylinder body of compressor and the shell that is arranged on the outer cooler of cylinder body is directly cooled off, thereby reach the cooling purpose.

As the patent No. is that the Chinese utility model patent " air inlet system of compressor " of ZL200820048421.1 (notification number is CN201218210Y) discloses the air-cooled structure in a kind of compressor.This compressor comprises suction port, the radiation fan that is arranged on the cylinder sleeve end, and wherein, suction port is connected with cylinder sleeve inside, is provided with filtrating equipment between suction port and the radiation fan.In the using process, radiation fan rotates, and gas directly enters into cylinder sleeve inside by behind the filtrating equipment, and by after being arranged on the exhaust-valve and the outside cylinder that links of exhaust-valve in the cylinder sleeve, turns back in the cylinder sleeve, constitutes gas-circulating system in cylinder sleeve inside.This shows, air cooling way in this compressor is circulating, cooled gas carries out gas circulation in cylinder sleeve inside all the time, cooling blast can not in time obtain changing, and has influence on cooling effect, and, this cooled gas circulatory system needs the cooperation of devices such as exhaust-valve, make the structure of compressor become complicated, volume is bigger, and energy consumption is also higher.

On the other hand, gas compressor in the market, common has two kinds: a kind of is gas compressor with reciprocating (being piston compressor), and it mainly comprises cylinder body and piston rod, the motor driving piston rod movement, then the gas in the compression cylinder, its inertial force is difficult to balance, and vibration is big, rotating speed is low, and volume is big, and relatively heavier, efficient is not high yet; Another kind is a rotary compressor, it mainly comprises the circle tube cylinder, the cylinder cap that are provided with import and export, is arranged on rotating rotor and transmission part in the cylinder body, and wherein, gas enters from the import of cylinder body, drive through rotor rotated, export from the outlet of cylinder body then.As the patent No. is the compression pump structure that the Chinese utility model patent " air pressure pump " of ZL00224720.8 (notification number is CN2420445Y) discloses core in a kind of rotary compressor.This compressor pump comprises stator (being cylinder body), is applied in the main shaft of stator central authorities, is sleeved on the outer eccentric wheel of main shaft, is sleeved on eccentric wheel outer roller and slide plate, wherein, but the main shaft relative stator is rotated, have suction port and air outlet in the both sides of slide plate on the stator, stator inner wall has a plurality of groovings, and slide plate one end links to each other with roller, and the other end activity inserting is within grooving, roller is close to the inwall of stator, makes to form meniscate cavity volume between the inwall of roller and stator.During actual operation, main shaft is subjected to motor driving and rotates, and drives the roller relative stator and rotates, and the air that will enter into the crescent shape compression square-cavity from the suction port of stator progressively compresses, at last the air outlet output from the stator.Because the inner space relative closure of stator, gas need could be input in the cavity volume of stator interior by suction port smoothly with certain pressure, also be, need carry out precompression to the raw-gas of input, could guarantee that raw-gas enters into stator interior continuously, could realize the gas compression process of going round and beginning again.Find out thus, the set-up mode of air inlet/outlet on this stator, the gas input is more passive, needs to consume the extra energy, has also limited the input flow rate of gas simultaneously greatly, has influence on the working efficiency of whole compressor pump then.

Summary of the invention

First technical problem to be solved by this invention is that the present situation at prior art provides a kind of gas compressor, its cooled gas can continuously obtain changing, thereby significantly improve cooling effect to compressor pump, energy consumption is lower, and, the device overall structure is simpler, compact, and volume is also less.

Second technical problem to be solved by this invention provides the gas compressor that a kind of working efficiency significantly improves, it is input to gas in the compressor pump and need not to be with precompression and can effectively cut down the consumption of energy, and can improve charge flow rate dramatically, thereby can significantly improve the working efficiency of compressor pump.

The 3rd technical problem to be solved by this invention provides a kind of gas compressor, and its compressor pump has a brand-new pressurized airflow path, and working efficiency is very desirable.

The 4th technical problem to be solved by this invention provides a kind of gas compressor, and its compressor pump has the cooling air flow passage that extends through cylinder body and internal rotor, guarantees the cooling effect to compressor pump.

The present invention solves the problems of the technologies described above the technological scheme that is adopted: this gas compressor, comprise horizontal pump case with circular cylindrical cavity, be arranged on first cover of pump case head, be arranged on second cover of pump case afterbody and be arranged on first cover fan before, wherein, be provided with motor in the pump case and be subjected to motor-driven compressor pump, has pressurized airflow path in the compressor pump, have gas input port on first cover, and have the pressurized gas delivery outlet on second cover, it is characterized in that: described second cover has the cooling blast ventilation mouth on also, leave spacing between the periphery of described motor and the pump case and as the source of the gas passage, the blowhole that communicates with pressurized airflow path on the described compressor pump is connected with this source of the gas passage, the air outlet hole that communicates with pressurized airflow path on the described compressor pump is connected with the pressurized gas delivery outlet, and, be provided with cooling air flow passage in the described compressor pump, the front and back of this cooling air flow passage respectively with described source of the gas passage, cooling blast ventilation mouth on second cover is connected.

For making apparatus structure compact more, described fan also can be driven by the motor that is arranged in the pump case, also be, described motor can have first output terminal and second output terminal, this first output terminal passes described first cover and extends and drive described fan and rotate, and this second output terminal then drives described compressor pump work.

For the gas that is blown into from fan is put together; simultaneously also protect fan, the flabellum scratch user in preventing to rotate can also be arranged with a fan guard outside the described fan; the afterbody edge of this fan guard is engaged on outside described first casing, and the head of this fan guard offers air intake.

For the gas that assurance enters in the pump case is not with impurity,, can also outer be connected with an air-strainer on the air intake of described fan guard in order to avoid the particle in the gas stops up air-flow path.

Compressor pump in the described gas compressor can adopt existing various technology, such as " air pressure pump " quoted in the background technique, but be further to solve second above-mentioned technical problem, described compressor pump can comprise circle tube cylinder, be separately fixed at a pair of end cap of cylinder body both sides, and be arranged between the end cap of both sides and positive on the cylinder body circumferential surface guide plate of suction port, wherein, described cylinder body is arranged on coaxially in the described pump case and with pump case and leaves spacing, the suction port of this cylinder body is arranged on the circumferential surface, and the blowhole of described compressor pump just is opened on the described end cap, be positioned at position afterwards, the guide plate back side, and, the base of described guide plate directly is connected on the circumferential surface of cylinder body, but the top margin of guide plate and the madial wall of pump case are the Spielpassung of slide relative, but the outer edge of each end cap is the Spielpassung of slide relative with the madial wall of pump case also.

By a pair of end cap, the setting of blowhole position on guide plate and the end cap, constituted a rotary auxiliary air intake device, so, described end cap, guide plate and cylinder body can rotate together, rotate and can be tangent with air-flow towards the suction port direction all the time in the front of this guide plate, like this, guide plate all the time can barrier air near the front of suction port, thereby the front at guide plate forms the malleation air-flow, gas can enter cylinder interior by suction port then along guide plate, and be formed naturally negative-pressure air-flow away from the back side of suction port at guide plate, gas will be automatically, be inhaled among the circulation passage by the blowhole on the end cap continuously, like this, at guide plate and end cap after the dead ahead rotates, will form a circle rotary flow type air-flow between outer surface of cylinder block and the inside pump casing wall, this rotary flow type air-flow is that air-flow formally enters into a secondary air before the participation compression procedure within the cylinder body.

Described guide plate can be provided with the fixing mode of both sides end cap respectively by two ends, and base that also can guide plate directly is connected on the circumferential surface of cylinder body.

Described guide plate can be upright shape simply, perhaps is the shape of top margin to the suction port bending, and promptly the cross section is V-shaped; For being more suitable for fluid mechanics, that strengthens guide plate stops and guide functions that described guide plate can be the arc of top margin suction port direction bending on cylinder body, so, the front of guide plate has the streamlined cambered surface of extending to the dead ahead of rotation, flows and more help the smooth and easy of air-flow.

For strengthening the flow of blowhole, on each end cap, can all offer three described blowholes.

For guaranteeing that further high-speed rotational can take place the air-flow that enters into the eddy flow gas-entered passageway from blowhole, the blowhole on the described end cap can be tangential type inlet.

For further solving the 3rd above-mentioned technical problem, described compressor pump can also comprise that the rotor, cock, the servo-actuated dividing plate and that are arranged on the hollow in the described cylinder body are arranged on the air guide shaft of rotor central authorities;

Wherein, the relative cylinder body of described rotor is eccentric to be provided with, form the crescent shape compression square-cavity between the madial wall of rotor and cylinder body, offer cock tank and servo-actuated dividing plate loose slot on the rotor, described cock is engaged in the cock tank with regard to activity, and described servo-actuated dividing plate one end is inserted in the cylinder body, the other end passes cock and is inserted in the servo-actuated dividing plate loose slot, and, offering an air outlet on the described rotor, this air outlet is positioned at that side of the identical servo-actuated dividing plate of relative rotor sense of rotation with cylinder body;

Described air guide shaft axially is provided with along it and is communicated with extraneous center through hole, this air guide shaft comprises first portion that is positioned at rotor central authorities and the second portion that is positioned at outside end cap and the end cap, leave spacing as outlet passageway between the first portion of this air guide shaft and the madial wall of rotor, and the outside of this air guide shaft first portion has the air outlet hole that is communicated with its center through hole.

For further solving the 4th above-mentioned technical problem, work calories in the cylinder body can in time be distributed, reduce the parts operational temperature, guarantee good working environment of compressor pump, described rotor penetratingly is provided with a plurality of heat dissipation channels vertically, and also penetratingly be provided with a plurality of radiation holes on each end cap vertically, when the relative pump housing of rotor and end cap swing, each radiation hole can be connected with heat dissipation channel, form the cooling air flow passage of compressor pump, by the cooling air flow passage that runs through whole compressor pump inside the work calories of parts is distributed, and do not influence the normal compression of air-flow, transmission.

For making the running of compressor pump when work parts more steady, effectively prevent component vibration, between the first portion of described air guide shaft and the rotor clutch shaft bearing can be set, between the second portion of described air guide shaft and the end cap second bearing can be set, make the supported and relative pump case of air guide shaft motionless by bearing, installation for fitted bearing, the first portion of described air guide shaft and rotor are in same axle center, the first portion of air guide shaft is bearing in the interior central authorities of rotor by clutch shaft bearing, and the second portion of air guide shaft and pump case are in same axle center, and the second portion of air guide shaft is bearing in the central authorities of end cap by second bearing; So, the center through hole of air guide shaft and pump case, end cap all are in same axle center, and simultaneously, this second portion can stretch out and can be connected to the gas holder that the storage pressurized gas are used.

Because the outer surface of cylinder block that is centrosymmetric has substantially been set up a guide plate, might cause cylinder body when rotated imbalance and tremble, for preventing that this situation from taking place, the outer surface of described cylinder body can also be connected with a balancing weight in that side relative with guide plate, reach balance by balancing weight and guide plate, make cylinder body, guide plate more steady together with the rotation of end cap.

For strengthening the flow of air outlet hole, the first portion of described air guide shaft can offer a pair of described air outlet hole respectively in the rear and front end, and every pair of air outlet hole can be symmetrical up and down.

Compared with prior art, the invention has the advantages that: pass through fan, the setting of offering air hole on the source of the gas passage between pump case and the motor and second cover, source of the gas can be entered in the pump case by the gas input port that fan is flowed through on first cover, be divided into two strands through the air-flow behind the source of the gas passage, one air-flow finally enters in the compressor pump and enters compression procedure, another strand air-flow enters into the cooling air flow passage in the compressor pump and participates in the cooling process, final air hole from second cover is discharged to the external world, so, cooled gas can continuously obtain changing, thereby significantly improve cooling effect to compressor pump, energy consumption is lower, and pressurized gas enters in the pump case by the gas input port on first cover with cooled gas, both shared gas-entered passageways, and the various transmission channel of separately flowing through at last, have an effect, make that the device overall structure is simpler, compactness, volume are also less;

Compressor pump of the present invention has the cooling air flow passage that extends through cylinder body and internal rotor, and so, cooling blast can penetrate compressor pump and output to the external world, has guaranteed the cooling effectiveness to compressor pump.

Simultaneously, being provided with of blowhole position constituted a rotary auxiliary air intake device on a pair of end cap, guide plate and the end cap, formally enter within the cylinder body at air-flow and to produce a rotary secondary air before participating in compression procedure, make the gas that is input in the compressor pump need not to be with precompression and can effectively cut down the consumption of energy, and can improve charge flow rate dramatically, thereby can significantly improve the working efficiency of compressor pump;

Moreover, compressor pump of the present invention combines spiral-flow auxiliary air intake device and rotary type compressor pump, design a kind of air flow passage of brand-new compressor pump, promptly, from the both sides input of cylinder body outside, after overcompression, from the central airflow mode of exporting of cylinder interior, guarantee the periodic duty that compressor pump can go round and begin again swimmingly, compare (as the patent of quoting in the background technique) with existing rotary type compressor pump, under the situation of the equal rotating speed of the relative cylinder body of rotor, working efficiency is very desirable.

Description of drawings

Fig. 1 is the structural representation (having omitted air-strainer) of the embodiment of the invention;

Fig. 2 is the cross-sectional schematic of the embodiment of the invention;

Fig. 3 be among Fig. 2 I-I to sectional view;

Fig. 4 is the structural representation of part pump case and compressor pump among Fig. 1;

Fig. 5 is the structural representation of compressor pump in the embodiment of the invention;

Fig. 6 removes a structural representation behind the end cap among Fig. 5;

Fig. 7 is the three-dimensional exploded view of compressor pump in the embodiment of the invention.

Embodiment

Below in conjunction with accompanying drawing embodiment invention is described in further detail.

As Fig. 1～shown in Figure 7, this gas compressor comprises horizontal pump case 1, first cover 11 that is arranged on pump case 1 head with circular cylindrical cavity, is arranged on second cover 12 of pump case 1 afterbody and is arranged on fan 110 before first cover 11 and the compressor pump that is arranged on the motor 10 in the pump case 1 and driven by motor 10;

Wherein, described motor 10 has first output terminal 101 and second output terminal 102, this first output terminal 101 passes described first cover 11 and extends and drive described fan 110 and rotate, 102 of this second output terminals drive described compressor pump work, specifically are that the end cap 2 in the drive compression pump rotates;

Have gas input port on described first cover 11, and have pressurized gas delivery outlet 12a and cooling blast ventilation mouth 12b on second cover 12;

Also be arranged with a fan guard 111 outside the described fan 110, the afterbody edge of this fan guard 111 is set in outside first cover 11, thereby be tightly connected mutually with the head of pump case 1, and, the head of this fan guard 111 offers air intake 112, gas can the concentrated area be entered in the fan guard 111 from air intake 112, and the gas input port from first cover 11 enters into pump case 1 inside then; For guaranteeing air quality, the also outer air-strainer 120 that is connected with on the air intake 112 of described fan guard 111;

Be provided with pressurized airflow path and cooling air flow passage E in the described compressor pump, both isolate mutually and are not connected;

Leave spacing between the periphery of described motor 10 and the pump case 1 and as source of the gas passage D, the blowhole 21 that communicates with pressurized airflow path on the described compressor pump is connected with this source of the gas passage D, the air outlet hole 81 that communicates with pressurized airflow path on the described compressor pump is connected with pressurized gas delivery outlet 12a, and, the front and back of this cooling air flow passage E are connected with cooling blast ventilation mouth 12b on described source of the gas passage D, second cover 12 respectively, and it is inner and exchange to the external world to make cooling blast can penetrate compressor pump.

And described compressor pump include circle tube cylinder 3, be separately fixed at cylinder body 3 both sides two end caps 2, be arranged between the both sides end cap 2 and guide plate 4, the rotor 5, cock 6, the servo-actuated dividing plate 7, that are arranged on the hollow in the cylinder body 3 are arranged on the air guide shaft 8 of rotor 5 central authorities;

Wherein, described cylinder body 3 is arranged on coaxially in the described pump case 1 and with pump case 1 and leaves spacing, and the cavity between cylinder body 3 and the pump case 1 is eddy flow gas-entered passageway A, and the suction port 31 of this cylinder body 3 is arranged on the circumferential surface;

The front of described guide plate 4 suction port 31 on cylinder body 3 circumferential surfacies, and each end cap 2 position after the back side of guide plate 4 has three blowholes 21, each blowhole 21 all is tangential type inlet, these blowholes 21 just become the blowhole of compressor pump;

So, when end cap 2 together with cylinder body 3, guide plate 4 after the dead ahead rotates, gas will be automatically enters into eddy flow gas-entered passageway A between cylinder body 3 and the pump case 1 from blowhole 21, and forming a circle rotary flow type air-flow, the setting of blowhole 21 positions has just constituted a spiral-flow auxiliary air intake device on two end caps 2 and guide plate 4 and the end cap 2;

Simultaneously, described guide plate 4 is the arc of top margin 41 suction port 31 direction bendings on cylinder body 3, promptly form streamlined radian in the front, the base 42 of guide plate 4 directly is connected on the circumferential surface of cylinder body 3, but the top margin 41 of guide plate 4 and the madial wall of pump case 1 are the Spielpassung of slide relative;

And, but the outer edge of each end cap 2 is the Spielpassung of slide relative with the madial wall of pump case 1 also, two end caps 2 just close the both sides of cylinder body 3 and the both sides of the eddy flow gas-entered passageway A between cylinder body 3 and the pump case 1.

Described rotor 5 relative cylinder body 3 eccentric settings, form crescent shape compression square-cavity B between the madial wall of rotor 5 and cylinder body 3, offer the servo-actuated dividing plate loose slot 52 in cock tank 51 and the cock tank 51 on the rotor 5, described cock 6 is engaged in the cock tank 51 with regard to activity, and described servo-actuated dividing plate 7 one ends are inserted in the cylinder body 3, the other end passes cock 6 and is inserted in the servo-actuated dividing plate loose slot 52, and, offer an air outlet 53 on the described rotor 5, this air outlet 53 is positioned at that side of the servo-actuated dividing plate 7 identical with cylinder body 3 relative rotor 5 sense of rotation, promptly be positioned at that opposite side of rotor 5 relative cylinder body 3 swaying directions, like this, the air-flow after being compressed in the crescent shape compression square-cavity B could enter into the central cavity of rotor 5 smoothly by this air outlet 53.

Described air guide shaft 8 axially is provided with center through hole 81 along it, these air guide shaft 8 ends are passed the pressurized gas delivery outlet 12a setting on second cover 12 and its center through hole 81 are connected with the external world, this center through hole 81 is the air outlet hole of compressor pump, this air guide shaft 8 comprises 8a of first portion that is positioned at rotor 5 central authorities' (being central cavity) and the second portion 8b that is positioned at outside end cap 2 and the end cap 2, leave spacing between the 8a of first portion of this air guide shaft 8 and the madial wall of rotor 5 and as outlet passageway C, and, this air guide shaft 8 8a of first portion offer two pairs of air outlet holes 82 in the rear and front end, each air outlet hole 82 is connected with center through hole 81.So, eddy flow gas-entered passageway A, crescent shape compression square-cavity B, outlet passageway C and center through hole 81 constitute the interior pressurized airflow path of compressor pump.

The 8a of first portion and the rotor 5 of described air guide shaft 8 are in same axle center, the 8a of first portion of air guide shaft 8 is bearing in the central authorities of rotor 5 by clutch shaft bearing 91, and the second portion 8b of air guide shaft 8 and pump case 1 and end cap 2 are in same axle center, the second portion 8b of air guide shaft 8 is bearing in the central authorities of end cap 2 by second bearing 92, and the end of air guide shaft 8 second portion 8b is stretched out outside end cap 2 and can be connected with gas holder.

Be the spin balancing of balance guide plate 4 in the hope of cylinder body 3, the outer surface of described cylinder body 3 also is connected with a balancing weight 32 in that side relative with guide plate 4.

And, in the present embodiment, described rotor 5 circumferentially has 11 heat dissipation channels 54, these 11 heat dissipation channels 54 are distributed on the rotor 5 with cock tank 51 with being centrosymmetric, 10 radiation holes 22 are circumferentially arranged on each end cap 2, and each heat dissipation channel 54 and radiation hole 22 all run through setting respectively vertically, when rotor 5 relative cylinder bodies 3 are swung, heat dissipation channel 54 can be connected with radiation hole 22, forms a cooling air flow passage E who runs through compressor pump.

During this compressor operating, fan 110 be subjected to motor 10 first output shaft 101 driving and rotate, extraneous gas is entered in the fan guard 111 through air-strainer 120, then the gas input port from first cover 11 enters into pump case 1 inside, air communication is divided into two strands after crossing source of the gas passage D: one air-flow is from the blowhole 21 of compressor pump and enter into pressurized airflow path in the compressor pump, participate in compression procedure, the high pressure draught after last compressed pump pressure contracts outputs to gas holder from the air outlet hole (being the center through hole 81 on the air guide shaft 8) of compressor pump and the pressurized gas delivery outlet 12a on second cover 12; And another strand air-flow directly enters the cooling air flow passage E that runs through in the compressor pump, promptly, radiation hole 22 from one of them end cap 2 enters into the heat dissipation channel 54 on the rotor 5, then the radiation hole 22 from another end cap 2 is discharged to the external world through the cooling blast ventilation mouth 12b on second cover 12, arrive the heat radiation purpose, air-flow will cool off compressor pump inside so, endlessly;

And compressor pump when work, two end caps 2 are fixedly linked by bolt and cylinder body 3, one of them end cap 2 is subjected to second output shaft 102 of motor 10 to drive and can rotate around the axle center, like this, two end caps 2, cylinder body 3 and guide plates 4 all can coaxial together rotations, sense of rotation is that rotate towards the direction of suction port 31 all the time in the front of this guide plate 4, shown in the arrow outside the pump case among Fig. 31;

At guide plate 4 and end cap 2, cylinder body 3 after the dead ahead rotates, described spiral-flow auxiliary air intake device makes gas automatically to enter in the eddy flow gas-entered passageway A by guide plate 4 blowhole 21 behind, form a circle rotation type air current, this rotary flow type air-flow is input within the cylinder body 3 from the suction port 31 in guide plate 4 dead aheads at last, therefore find out, this rotary flow type air-flow is that air-flow formally enters into a secondary air before the participation compression procedure within the cylinder body 3, referring to Fig. 2 and Fig. 3.

Simultaneously, cylinder body 3 in the rotation is by the effect of servo-actuated dividing plate 7 and cock 6, rotor 5 relative cylinder bodies 3 are rubbed, compress into the gas of crescent shape compression square-cavity B in the cylinder body 3, the air outlet 53 of air-flow after being compressed from rotor 5 enters in the outlet passageway C of rotor 4, by air outlet hole 82 and center through hole 81 on the air guide shaft 8, output in the gas holder at last, air current flow path and direction are referring to shown in the arrow of Fig. 2 and Fig. 3.

Claims (9)

1. gas compressor, comprise horizontal pump case (1) with circular cylindrical cavity, be arranged on first cover (11) of pump case (1) head, be arranged on second cover (12) of pump case (1) afterbody and be arranged on first cover (11) fan (110) before, wherein, the compressor pump that is provided with motor (10) in the pump case (1) and driven by motor (10), has pressurized airflow path in the compressor pump, first cover has gas input port on (11), and have pressurized gas delivery outlet (12a) on second cover (12), it is characterized in that: described second cover (12) has cooling blast ventilation mouth (12b) on also, leave spacing between the periphery of described motor (10) and the pump case (1) and as source of the gas passage (D), the blowhole that communicates with pressurized airflow path on the described compressor pump (21) is connected with this source of the gas passage (D), the air outlet hole that communicates with pressurized airflow path on the described compressor pump (81) is connected with pressurized gas delivery outlet (12a), and, also be provided with the cooling air flow passage isolated (E) in the described compressor pump with pressurized airflow path, the front and back of this cooling air flow passage (E) respectively with described source of the gas passage (D), cooling blast ventilation mouth (12b) on second cover (12) is connected;

Described compressor pump comprises circle tube cylinder (3), be separately fixed at a pair of end cap (2) of cylinder body (3) both sides, and be arranged between the both sides end cap (1) and positive on cylinder body (3) circumferential surface guide plate (4) of suction port (31), wherein, described cylinder body (3) is arranged on coaxially in the described pump case (1) and with pump case (1) and leaves spacing, the suction port (31) of this cylinder body (3) is arranged on the circumferential surface, and the blowhole of described compressor pump (21) just is opened on the described end cap (2), be positioned at position afterwards, guide plate (4) back side, and, the base (42) of described guide plate (4) directly is connected on the circumferential surface of cylinder body (3), the top margin (41) of guide plate (4) and pump case (1) but madial wall be the Spielpassung of slide relative, and, the outer edge of each end cap (2) also with pump case (1) but madial wall be the Spielpassung of slide relative.

2. gas compressor according to claim 1, it is characterized in that: described motor (10) has first output terminal (101) and second output terminal (102), this first output terminal (101) passes described first cover (11) and extends and drive described fan (110) and rotate, and this second output terminal (102) then drives described compressor pump work.

3. gas compressor according to claim 1, it is characterized in that: also be arranged with a fan guard (111) outside the described fan (110), the afterbody edge of this fan guard (111) is engaged on outside described first cover (11), and the head of this fan guard (111) offers air intake (112).

4. gas compressor according to claim 3 is characterized in that: the air intake (112) of described fan guard (111) is gone up the also outer air-strainer (120) that is connected with.

5. according to the described gas compressor of arbitrary claim in the claim 1 to 4, it is characterized in that: described guide plate (4) is top margin (41) is gone up arc from suction port (31) direction bending to cylinder body (3).

6. gas compressor according to claim 5 is characterized in that: the blowhole (21) on the described end cap (2) is tangential type inlet.

7. gas compressor according to claim 5 is characterized in that: described compressor pump comprises that also the rotor (5), cock (6), the servo-actuated dividing plate (7) and that are arranged on the hollow in the described cylinder body (3) are arranged on the air guide shaft (8) of rotor (5) central authorities;

Wherein, described rotor (5) the eccentric setting of cylinder body (3) relatively, form crescent shape compression square-cavity (B) between the madial wall of rotor (5) and cylinder body (3), offer cock tank (51) and servo-actuated dividing plate loose slot (52) on the rotor (5), described cock (6) is engaged in the cock tank (51) with regard to activity, and described servo-actuated dividing plate (5) one ends are inserted in the cylinder body (3), the other end passes cock (6) and is inserted in the servo-actuated dividing plate loose slot (52), and, offer an air outlet (53) on the described rotor (5), this air outlet (53) are positioned at that side with cylinder body (3) the servo-actuated dividing plate (7) that rotor (5) sense of rotation is identical relatively;

Described air guide shaft (8) axially is provided with along it and is communicated with extraneous center through hole (81), this air guide shaft (8) comprise the first portion (8a) that is positioned at rotor (5) central authorities and be positioned at end cap (2) and end cap (2) outside second portion (8b), leave spacing between the first portion (8a) of this air guide shaft (8) and the madial wall of rotor (5), and the outside of this air guide shaft (8) first portion (8a) has the air outlet hole (82) that is communicated with its center through hole (81).

8. gas compressor according to claim 7, it is characterized in that: described rotor (5) penetratingly is provided with a plurality of heat dissipation channels (54) vertically, and also penetratingly be provided with a plurality of radiation holes (22) on each end cap (2) vertically, each radiation hole (22) can be connected with heat dissipation channel (54), forms described cooling air flow passage (E).

9. gas compressor according to claim 7, it is characterized in that: the first portion (8a) of described air guide shaft (8) is in same axle center with rotor (5), the first portion (8a) of air guide shaft (8) is bearing in the central authorities of rotor (5) by clutch shaft bearing (91), and the second portion (8b) of air guide shaft (8) is in same axle center with pump case (1), and the second portion (8b) of air guide shaft (8) is bearing in the central authorities of end cap (2) by second bearing (92).

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