CN202811372U

CN202811372U - Cooling device for vacuum pump oil

Info

Publication number: CN202811372U
Application number: CN 201220499879
Authority: CN
Inventors: 蒋友荣
Original assignee: ZHEJIANG VALUE ELECTROMECHANCIAL CO Ltd
Current assignee: ZHEJIANG VALUE ELECTROMECHANCIAL CO Ltd
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2013-03-20
Anticipated expiration: 2022-09-28

Abstract

The utility model discloses a rotary-vane vacuum pump and provides a cooling device for vacuum pump oil. According to the cooling device for the vacuum pump oil, the vacuum pump oil is subjected to cooling and temperature decreasing by virtue of an external condenser, the external condenser is subjected to air cooling and the temperature decreasing by a motor fan, the cooling effect of the vacuum pump oil is good, the service life of the vacuum pump oil is prolonged, and the cooling device of the vacuum pump oil has the characteristics of energy saving and environment friendliness; and the technical problems in the prior art that the rotary-vane vacuum pump cannot be effectively cooled when the oil temperature is higher, and thus the oxidation and the deterioration of the vacuum pump oil are accelerated, and more seriously, the performances of the vacuum pump oil are directly influenced and the like are solved. The condenser is arranged at the other side of the motor fan of a vacuum pump, the inlet end of the condenser is connected with one end of an oil inlet pipe of the condenser, the outlet end of the condenser is connected with one end of an oil outlet pipe of the condenser, the other end of the oil inlet pipe of the condenser stretches and is communicated into a corresponding lubricating channel above a pump stator, and the other end of the oil outlet pipe of the condenser stretches and is communicated into an oil tank.

Description

The cooling unit of pumping fluid

Technical field

The utility model relates to a kind of rotary-vane vaccum pump, relates in particular to a kind of environmental protection and energy saving, the cooling unit of the pumping fluid of pumping fluid good cooling results.

Background technique

Vacuum pump is to utilize machinery, physics, the method such as chemistry or physical chemistry produces in a certain enclosed space, improve and keep the device of vacuum, it is widely used in medication chemistry, electronic technology, vacuum drying, the fields such as refrigeration, generally be divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump wherein is the widest as the backing pump application area, but but there is following problems in rotary-vane vaccum pump, during in particular for the electro-optical source industry, the oil temperature that is pumping fluid can increase after operation gradually, when especially in the higher situation of ambient temperature, using, because electro-optical source industry (bulb, Compact Fluorescent Lamp) operating ambient temperature is high, and the pumped gas temperature is high, cause in use pump temperature temperature rise of vacuum pump too high, on the one hand the pump oil viscosity is declined to a great extent, the saturation vapour pressure of pump oil raises, the vacuum ultimate pressure of a pump is raise and pumping efficiency decline, and make the rubber parts on the vacuum pump easily aging, simultaneously thermal expansion is dwindled the pump rotor running clearance, be prone to " stuck " phenomenon, affect the vacuum pump maintainability; On the other hand, volatile quantity increased when the pump oil temperature was too high, the perishable oxidation of pump oil, and larger on the impact in working life of oil, the frequency of changing oil in the using process increases, and has increased user cost.

Summary of the invention

The utility model has mainly provided and has a kind ofly utilized external condenser that pumping fluid is cooled, and utilize the fan of vaccum pump motor side simultaneously condenser to be carried out wind cooling temperature lowering, the pumping fluid good cooling results, prolonged the working life of pumping fluid, and be beneficial to the stable performance of vacuum pump performance, the cooling unit of the pumping fluid of energy-conserving and environment-protective, having solved the oil temperature of the rotary-vane vaccum pump that exists in the prior art can't effective cooling when higher, cause the pumping fluid accelerated oxidation rotten, reduce working life, directly affect the technical problem of vacuum pump performance etc. when serious.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of cooling unit of pumping fluid, comprise support and be located at the pump housing and the fuel tank of support one side, and the motor of support opposite side and fan, the pump housing is located in the fuel tank, the pump housing wherein comprises again the pump postoperculum that is fixed on the pump stator on the support and is encapsulated in the pump stator outboard end, pump stator and pump postoperculum are enclosed pump housing receiving cavity jointly, in pump housing receiving cavity, be provided with pump rotor and oil pump, at support, pump stator and pump postoperculum are provided with some conductings in the lubrication channel of pump housing receiving cavity and fuel tank, opposite side at described fan is provided with condenser, the entry end of condenser is connecting an end of condenser oil inlet pipe, the outlet end of condenser is connecting an end of condenser oil outlet tube, the other end of condenser oil inlet pipe extends and is communicated with in the lubrication channel corresponding above pump stator, and the other end of condenser oil outlet tube extends and is communicated with in fuel tank.Increase a condenser by the fan outboard end at original rotary-vane vaccum pump, the entry end of condenser is communicated with in vacuum pump in the lubrication channel corresponding above the pump stator, the outlet end of condenser is communicated with in fuel tank, make the hot pumping fluid that is used for lubrication and seal in the vacuum pump body under the effect of built-in pressure fuel pump, flow into condenser, condenser is again by wind cooling temperature lowering under the suction of original fan for electric motor temperature reduction, pumping fluid oil temperature in the condenser reduces and is back in the fuel tank and recycles, thereby realized cooling vacuum pump oil, the purpose of low pump temperature is fallen, utilize the fan of motor side that condenser is implemented cooling, the pumping fluid good cooling results, in the situation that does not increase power consumpiton, realized falling the purpose of low pump temperature, energy-conserving and environment-protective, prolonged the working life of pumping fluid, saved cost, especially guarantee can be under the hot environment normal stable work of vacuum pump, made vacuum pump stable performance performance, guaranteed the degree of vacuum of system.

As preferably, be connected with the first crossover sub in the upper-end surface of described pump stator, the lower end of the first crossover sub lubrication channel corresponding with the pump stator top is connected, and the upper end of the first crossover sub is connected with the condenser oil inlet pipe.By the upper-end surface at pump stator the first crossover sub is set and connects the condenser oil inlet pipe, avoid lubrication channel corresponding in the pump stator to leak, the laying of being convenient to simultaneously the condenser oil inlet pipe is installed.

As preferably, level is penetrated with two the second crossover subs on described support, and condenser oil inlet pipe and condenser oil outlet tube are fixed and are applied on the support by the second crossover sub respectively.By be horizontally disposed with two the second crossover subs at support, condenser oil inlet pipe and condenser oil outlet tube are fixed on the support, the one, save installing space, be convenient to depositing of vacuum pump complete machine, the 2nd, avoid condenser to rock and cause leakage phenomenon into and out of oil pipe.

As more preferably, described support is the aluminum enclosure structure, the support side corresponding with motor envelope is provided with front motor cover, is penetrated with two the 3rd crossover subs in the underpart of front motor cover level, and condenser oil inlet pipe and condenser oil outlet tube run through by the 3rd crossover sub respectively and pass through front motor cover.The aluminum frame of shell construction is lightweight, conveniently transports and carries; Be horizontally disposed with two the 3rd crossover subs in the lower end with the front motor cover of the second crossover sub respective side, the extended condenser of the second crossover sub is hidden in the cavity that front motor cover and support enclose into and out of tubing section, the one, improve the clean and tidy and aesthetic property of complete machine, and avoid condenser phenomenon when oil pipe uses, to occur rocking and swiping.

As preferably, described fan is provided with motor fan housing with the outboard end that is located in motor at fan housing, is covered with the condenser case outside motor fan housing, and condenser is coaxial to be fixed on the motor fan housing corresponding in the condenser case.Condenser is coaxial when being fixed on the outside of fan housing, the axial suction forced air cooling when it relies on fan rotation, good cooling results; By the condenser case is set outside condenser, not only beautify the complete machine outward appearance, also avoid simultaneously condenser to be exposed to and phenomenon occurs to scald when outer, improve safety in utilization.

As more preferably, between described condenser and motor fan housing, be folded with ring washer.Ring washer has increased the clearance space between condenser and motor fan housing, has strengthened the air cooling effect of condenser.

The pump housing can be single-stage pump, and as preferably, the described pump housing is the two-stage pump structure, and the condenser oil inlet pipe extends also and is communicated with in the lubrication channel corresponding above the pump stator of prime.Two-stage pump degree of vacuum is high, and the pump housing and pumping fluid temperature rise are obvious, and the condenser cooling-down effect is obvious.

As preferably, described lubrication channel comprises the first lubrication channel and the second lubrication channel and the 3rd lubrication channel, one end of the first lubrication channel wherein is communicated under the oil level of fuel tank, the other end of the first lubrication channel is communicated in oil pump, and be connected with pump housing receiving cavity through oil pump, one end of the second lubrication channel is communicated in pump housing receiving cavity, the other end of the second lubrication channel is communicated in the air inlet nozzle of support top, one end of the 3rd lubrication channel is communicated in pump housing receiving cavity, the other end of the 3rd lubrication channel is communicated in the rotating shaft of end face and the pump rotor of pump rotor, and the condenser oil inlet pipe is communicated with on the 3rd lubrication channel.The first lubrication channel is used for oil pump to pump housing receiving cavity internal pressure fuel feeding, the second lubrication channel is communicated with at air inlet nozzle, be used at the air inlet nozzle place anti-recirculation device being set, improve the usability of vacuum pump, turn back to again front stator behind the logical support of the 3rd lubrication channel, and towards pump chamber interior pump rotor end face and rotating shaft, realize lubricated, the functions such as cooling and sealing, when the condenser oil inlet pipe is communicated with on the 3rd lubrication channel, satisfy anti-backflow and the pump housing lubricated, under the prerequisite of cooling and the functional requirement such as sealing the pump oil after the temperature rise led to and lower the temperature in the condenser, oil temperature is reduced, rational in infrastructure, be easy to install and implement.

The outlet end of condenser oil outlet tube can be arranged under the oil level of fuel tank, and as preferably, the outlet end of described condenser oil outlet tube is positioned on the oil level of fuel tank.When the outlet end of condenser oil outlet tube was positioned on the oil level of fuel tank, the from top to bottom sedimentation of cooled pumping fluid improved cooling effect.

As preferably, described condenser oil inlet pipe and condenser oil outlet tube are copper tube.The copper tube thermal diffusivity is good, is easy to buying and installation.

Therefore, the cooling unit of pumping fluid of the present utility model has following advantage: increase a condenser by the fan outboard end at original rotary-vane vaccum pump, the entry end of condenser is communicated with in vacuum pump in the 3rd corresponding above the pump stator lubrication channel, the outlet end of condenser is communicated with in fuel tank, make the pumping fluid in the pump housing under the pressure-acting of oil pump, flow into condenser, condenser is again by wind cooling temperature lowering under the suction of original fan for electric motor temperature reduction, pump oil behind the temperature drop is back in the fuel tank and recycles, under the prerequisite that does not affect the vacuum pump usability, realized cooling vacuum pump oil, the purpose of low pump temperature is fallen, the pumping fluid good cooling results, because condenser is to utilize the fan of motor side to implement cooling, in the situation that power consumpiton does not increase, realized falling the purpose of low pump temperature, energy-conserving and environment-protective, prolonged the working life of pumping fluid, saved cost, guaranteed that especially vacuum pump can normal stable work under hot environment.

Description of drawings:

Fig. 1 is the explosive view of the cooling unit of the utility model pumping fluid;

Fig. 2 is the structural representation of stator in the utility model;

Fig. 3 is structural representation of the present utility model;

Fig. 4 is the enlarged view at I shown in Figure 3 place;

Fig. 5 is the enlarged view at II shown in Figure 3 place.

Embodiment:

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment:

As shown in Figure 1, take Double-stage rotary vane vacuum pump as example, the cooling unit of a kind of pumping fluid of the present utility model, the cast aluminium support 1 that comprises shell construction, the leading flank of support 1 is fixed with fuel tank 2, the opening end of fuel tank 2 is encapsulated on the leading flank of support 1, support 1 leading flank in fuel tank 2 interior correspondences is equipped with the pump housing, trailing flank at support 1 is equipped with motor 3, the output shaft of motor 3 extend to support 1 leading flank and with the pump housing in coaxial linking to each other of pump rotor, at the coaxial fan 5 that is equipped with of the outboard end of motor 3, the pump housing wherein comprises that again Coaxial Superimposed successively is fixed on the pump stator 41 of the fore pump on support 1 leading flank, mesospore, the stator 41 of rear class pump and be encapsulated in the pump postoperculum 42 in pump stator 41 outsides of rear class pump, by support 1, the pump stator 41 of the pump stator 41 of fore pump and mesospore and mesospore rear class pump and pump postoperculum 42 are enclosed two pump housing receiving cavities, in two pump housing receiving cavities all inclined to one side installation a pump rotor 43, before, 43 coaxial the linking to each other of pump rotor of rear class, built-in oil pump 44 of coaxial installation in pump rotor 43 rotating shafts of prime, at support 1, form three conductings on pump stator 41 and the pump postoperculum 42 in the lubrication channel of pump housing receiving cavity and fuel tank, as shown in Figure 2, lubrication channel comprises the first lubrication channel 14 and the second lubrication channel 15 and the 3rd lubrication channel 16, one end of the first lubrication channel 14 wherein is communicated under the oil level of fuel tank 2, the other end of the first lubrication channel 14 is communicated in oil pump 44, and be connected with pump housing receiving cavity through oil pump 44, one end of the second lubrication channel 15 is communicated in pump housing receiving cavity, the other end of the second lubrication channel 15 is communicated in the air inlet nozzle of support 1 top, and be communicated in the anti-structure of backflowing at air inlet nozzle place, one end of the 3rd lubrication channel 16 is communicated in pump housing receiving cavity, the other end of the 3rd lubrication channel 16 is communicated in the rotating shaft of end face and the pump rotor 43 of pump rotor 43, as shown in figures 1 and 3, the fan 5 coaxial outboard ends that are installed in motor 3, establish a motor fan housing 11 at fan 5 outer covers, establish a condenser case 12 at motor fan housing 11 outer coaxial covers, motor fan housing 11 in condenser case 12 interior correspondences passes through condenser 6 of the coaxial installation of screw, at ring washer 13 made of paper of

condenser

6 and 11 sandwicheds of motor fan housing, the middle hole shape of ring washer 13 and boundary line, through hole outside big or small and on the motor fan housing 11 conform to, the entry end of condenser 6 is connecting an end of condenser oil inlet pipe 7, the outlet end of condenser 6 is connecting an end of condenser oil outlet tube 8, condenser oil inlet pipe 7 and condenser oil outlet tube 8 are copper tube, the other end of condenser oil inlet pipe 7 extends and is communicated with in the 3rd corresponding above the pump stator 41 of the prime lubrication channel 16, on the extension of the other end of condenser oil outlet tube 8 and the oil level of connection in fuel tank 2.Such as Fig. 1 and shown in Figure 5, first crossover sub 45 spins in the upper-end surface of the pump stator 41 of fore pump, and 41 maintenances of the first crossover sub 45 and pump stator are tightly connected, the lower end of the first crossover sub 4 three lubrication channel 16 corresponding with the pump stator of fore pump 41 tops is connected, the upper end of the first crossover sub 45 is connected with condenser oil inlet pipe 7, and the joint keeps sealing, as shown in Figure 4, upper horizontal on support 1 right side runs through has fixed two the second crossover subs 9, the second crossover sub 9 is altered respectively and is associated on condenser oil inlet pipe 7 and the condenser oil outlet tube 8, both fixedly are applied on the support 1 by the second crossover sub 9, at support 1 side encapsulation front motor cover 10 corresponding with motor 3 sides, as shown in Figure 1, run through in the underpart, right side of front motor cover 10 level and to have fixed two the 3rd crossover subs 17, two the 3rd crossover subs 17 are altered respectively and are associated on condenser oil inlet pipe 7 and the condenser oil outlet tube 8, make from the second crossover sub 9 extended condenser oil inlet pipes 7 and condenser oil outlet tube 8 to extend to outside the front motor cover 10 by the 3rd crossover sub 17 and be fixed on the front motor cover 10.

During use, oil pump 44 sucks the pumping fluid in the fuel tank 2 in the pump housing receiving cavity, and the pumping fluid in the pump housing receiving cavity suppressed enter the first lubrication channel 14, and enter in the pump housing receiving cavity, wherein a part of pumping fluid enters the second lubrication channel 15, and be communicated in the anti-structure of backflowing at air inlet nozzle place, another part pumping fluid enters the 3rd lubrication channel 16, and the rotating shaft that enters the end face of pump rotor 43 and pump rotor 43 is used for lubricated and sealing, pumping fluid in the 3rd lubrication channel 16 enters condenser 6 through condenser oil inlet pipe 7 again simultaneously, is back to fuel tank 2 through condenser oil outlet tube 8 again after condenser 6 coolings.

Specific embodiment described herein only is to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. the cooling unit of a pumping fluid, comprise support (1) and be located at the pump housing and the fuel tank (2) of support (1) one side, and the motor (3) of support (1) opposite side and fan (5), the pump housing is located in the fuel tank (2), the pump housing wherein comprises again the pump stator (41) that is fixed on the support (1) and is encapsulated in the pump postoperculum (42) of pump stator (41) outboard end, pump stator (41) is enclosed pump housing receiving cavity jointly with pump postoperculum (42), in pump housing receiving cavity, be provided with pump rotor (43) and oil pump (44), in support (1), pump stator (41) and pump postoperculum (42) are provided with some conductings in the lubrication channel of pump housing receiving cavity and fuel tank, it is characterized in that: the opposite side at described fan (5) is provided with condenser (6), the entry end of condenser (6) is connecting an end of condenser oil inlet pipe (7), the outlet end of condenser (6) is connecting an end of condenser oil outlet tube (8), the other end of condenser oil inlet pipe (7) extends and is communicated with in lubrication channel corresponding to pump stator (41) top, and the other end of condenser oil outlet tube (8) extends and is communicated with in fuel tank (2).

2. the cooling unit of pumping fluid according to claim 1, it is characterized in that: be connected with the first crossover sub (45) in the upper-end surface of described pump stator (41), the lower end of the first crossover sub (45) lubrication channel corresponding with pump stator (41) top is connected, and the upper end of the first crossover sub (45) is connected with condenser oil inlet pipe (7).

3. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: be penetrated with two the second crossover subs (9) in the upper level of described support (1), condenser oil inlet pipe (7) and condenser oil outlet tube (8) are fixed and are applied on the support (1) by the second crossover sub (9) respectively.

4. the cooling unit of pumping fluid according to claim 3, it is characterized in that: described support (1) is the aluminum enclosure structure, support (1) the side envelope corresponding with motor (3) is provided with front motor cover (10), underpart level at front motor cover (10) is penetrated with two the 3rd crossover subs (17), and condenser oil inlet pipe (7) and condenser oil outlet tube (8) run through by front motor cover (10) by the 3rd crossover sub (17) respectively.

5. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: described fan (5) is with the outboard end that is located in motor (3), outside fan (5), be covered with motor fan housing (11), be covered with condenser case (12) outside motor fan housing (11), condenser (6) is coaxial to be fixed on the motor fan housing (11) corresponding in the condenser case (12).

6. the cooling unit of pumping fluid according to claim 5 is characterized in that: be folded with ring washer (13) between described condenser (6) and motor fan housing (11).

7. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: the described pump housing is the two-stage pump structure, condenser oil inlet pipe (7) extends and also is communicated with in lubrication channel corresponding to pump stator (41) top of prime.

8. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: described lubrication channel comprises the first lubrication channel (14) and the second lubrication channel (15) and the 3rd lubrication channel (16), one end of the first lubrication channel (14) wherein is communicated under the oil level of fuel tank (2), the other end of the first lubrication channel (14) is communicated in oil pump (44), and be connected with pump housing receiving cavity through oil pump (44), one end of the second lubrication channel (15) is communicated in pump housing receiving cavity, the other end of the second lubrication channel (15) is communicated in the air inlet nozzle of support (1) top, one end of the 3rd lubrication channel (16) is communicated in pump housing receiving cavity, the other end of the 3rd lubrication channel (16) is communicated in the rotating shaft of end face and the pump rotor (43) of pump rotor (43), and condenser oil inlet pipe (7) is communicated with on the 3rd lubrication channel (16).

9. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: the outlet end of described condenser oil outlet tube (8) is positioned on the oil level of fuel tank (2).

10. the cooling unit of pumping fluid according to claim 1 and 2, it is characterized in that: described condenser oil inlet pipe (7) and condenser oil outlet tube (8) are copper tube.