CN1097502A - Ammonia cooling system with closed compressor - Google Patents

Abstract

A kind of ammonia cooling system with closed compressor, this compressor partly is made up of motor (power) part and air pump, it is characterized in that having adopted some isolation structures, stator coils of motor and cold-producing medium ammonia are kept apart fully, simultaneously, ammonia is closed in the closed system, does not have to leak, and its isolation structure has three kinds of schemes: enclosed compressor with spacing layer: motor stator parcel laminar hermetic compressor; Hydraulic closed compressor with soft-disk piston, this is effective ways of eliminating fluorine Lyons.

Description

Ammonia cooling system with closed compressor

The invention belongs to the invention of compressor formula refrigeration plant and motor antiseptic property aspect.

In traditional Refrigeration Technique, structure that ammonia refrigerating compressor can't be made closed (comprising totally-enclosed and semi-enclosed), because ammonia is the working medium of heavy corrosion copper, the stator coil of motor is easy to be corroded.So also can't make hermetic ammonia refrigeration compressor up to now.

The objective of the invention is to avoid the stator copper circle of motor to contact, thereby solve the etching problem of ammonia, develop ammonia cooling system with closed compressor stator coils of motor with ammonia.

General purpose of the present invention is to avoid the copper coil of motor to contact with ammonia, three kinds of schemes is arranged: enclosed compressor with spacing layer; Motor stator parcel laminar hermetic compressor; Hydraulic closed compressor with soft-disk piston.

Fig. 1 is the cross-sectional schematic of enclosed compressor with spacing layer, the notch place of stator core 3 is filled up with the nonmagnetic substance (such as using resin material) of high strength heatproof, (part of representing with black matrix among the figure), and extend to two ends, form a garden cylindrical shell of forming jointly by iron core teeth portion and this material, be called separation layer (★), at the bottom of 8 jars of the cover 2 separation layer bodies 16 and the hermetically sealed can 14 common closed systems of forming of air inlet bag 13, separation layer and cover 2 and body 8 are to adopt adhesive seal, and other place adopts welded seal.In order to improve the bonding strength of iron core and resin material, iron core two laminate surface up and down corrodes into cellularly, and iron core is answered pickling to clean and done to the greatest extent.In order to guarantee the sealing of separation layer, before making separation layer and all adopt a sub-high pressure dipping lacquer (or other coating) afterwards, micropore that may seepage is all filled up.Other corrective measure has: the air-flow of air inlet pipe 1 flows to air inlet bag 13 around cylinder block outer wall after through the air gap between the stator rotor motor being cooled off again.

Fig. 3 is a stator parcel laminar hermetic compressor, almost completely the same with traditional hermetic compressor structure, crucial difference is carried out high pressure dipping lacquer (or other coating) to whole stator exactly, and make lacquer or coating certain thickness integument be arranged one of stator outer surface formation, the external envelope face of whole stator is until inside all is closely knit integral body, such stator places hermetically sealed can, and ammonia can not destroy integument the bag of coil is protected.The essence of this scheme is a kind of motor of high antiseptic property, and the method for high pressure dipping lacquer (or other coating) can be applicable to whole electric manufacturing, and stator will clean up before the high pressure dipping lacquer.The binding post 18 of motor and hermetically sealed can and 19 adopts irony or copper chrome-plated material.Other corrective measure has: the air-flow of air inlet pipe 1 after the air gap between the process stator rotor cools off motor, flows to air inlet bag 13 around cylinder block outer wall again under the guiding of air-flow guide 3.

Among Fig. 1 and Fig. 3, frame of broken lines B represents the air pump part, comprises piston type and rotary air pump.

Fig. 4 is the cutaway view of hydraulic pressure film sieve plug alive hermetic compressor, and the compressor of this structure mainly is the improvement of piston scenario-frame.

For the convenience of narrating, at first come principle of specification, and then be generalized to rotary compressor with piston compressor.In compressor of the present invention, between piston 1 and inlet valve 6 air bleeding valves 7 film 3 is arranged, it has the good anti-reciprocating fatigability of intensity oil resistivity.It has double effect: the first, work to transmit the pressure and the suction of piston, and be full of lubricating oil between piston and the film, the reciprocating motion of piston is delivered to film by lubricating oil, making film produce reciprocating motion thereupon, be equivalent to the ennation of piston, is a kind of hydraulic piston; Second, play the confining bed effect, it is as sealant, working medium is enclosed in the circulatory system that is made of intake valve air bleeding valve condenser choke valve evaporimeter etc., and can not enter the space of compressor power mechanism, so the power space that is made of motor (or mechanical motor) bent axle bar piston etc. can be opened wide airspace.It has solved following problem: 1, the working medium closed question of air conditioning for automobiles; 2, avoided the corrosion of ammonia to motor, available ammonia has solved the problem in superseded fluorine Lyons as the working medium of hermetic compressor; 3, lubricating oil is lived by the film shelves, has avoided lubricating oil to enter circulating line; 4, improve radiating condition, can produce moving air by the adapted fan; 5, maintenanceability is good, and because of not needing hermetically sealed can, power and running part can directly keep in repair.

In this compressor, film 3 is limited range of movement by the taper garden platform of both sides symmetry, film 3 is also made garden frustum curved surface, being positioned at piston garden frustum 2 on one side will have enough intensity, is drilled with abundant aperture above, and piston makes fluid pass through the transmission of aperture realizable force, driving film moves back and forth as piston, by valve block garden frustum 4 and 2 symmetries on one side, atresia only plays position-limiting action; The volume of two garden frustums (the deduction film takes up space) should equate with the volume of piston motion.The minimizing of fluid between piston and the film has designed a fluid replenishment valve 5 when replenishing compression, be contained in A position or B position all can, in the A position piston closes oil-in is arranged, also can save valve 5.Because the pressure differential at piston two ends is very big, be unfavorable for starting and operating efficiency, spring 8 of ad hoc meter is in the crankshaft end of piston, to offset the pressure that comes from working medium of the part other end, the pressure that elastic force produces on piston is lower than the high pressure of working medium, the low pressure of a little higher than working medium normally, under the prerequisite that does not influence starting performance, elastic force bigger can raise the efficiency.After the shutdown, spring is pressed in the intact position of exhaust with piston, and top thick stick 10 also withstands on the intact position of exhaust with film, in order to avoid the air pressure of working medium pushes back film, the fluid of hydraulic action is reduced, and is unfavorable for starting.There is one to take over a business 11 on the film, in order to avoid film is damaged.Because valve and lubricating oil have cut off, adopt the special oil that seals, or add some rubber structures at sealing part, improve the keying of valve.Fig. 5 is that the justice of showing of the member 22 among Fig. 4 is schemed, and is a fuel tap door, when not being full of oil in the cylinder of piston among Fig. 4 16, during piston 16 pumpbacks, form negative pressure in the cylinder, 223 valve blocks are opened among Fig. 5, make and replenish machine oil in the cylinder, when piston 16 was compressed into, spring 222 was closed valve block 223; When cylinder inner engine oil when being full, valve block 223 can breakdown yet.

This soft-disk piston structure is applicable to (comprising rotary pump) compression pump vavuum pump of all suction-discharge type valves, replaces piston pump with the pump of other form and gets final product.

Certainly, the motor compressor of this soft-disk piston formula can be made the structure of closed container equally, and as traditional compressor, motor and all motions place hermetically sealed can, their working medium contacts of also getting along well.Fill an amount of compressed gas in jar, be beneficial to starting and efficient.

Rubber or plastics that soft-disk piston adopts fiber to strengthen are made.

More than in the three class compressors, other improvement has: 1, axis hole and piston cylinder all adopt the steel bushing structure, to improve wearability; 2, alternate the building up of the external diameter of the silicon steel sheet of its motor stator size becomes the heat radiation laminated structure; 3, adopt the pure iron or the Stainless Steel conduit of outer surface degree copper,, guarantee that conduit and condenser and evaporimeter have good heat exchange to improve the surperficial thermal conductivity and the manufacturability of welding.

Claims (2)

1, a kind of ammonia cooling system with closed compressor, this compressor partly is made up of motor (power) part and air pump, it is characterized in that having adopted some isolation structures, stator coils of motor and cold-producing medium ammonia are kept apart fully, simultaneously, ammonia is closed in the closed system, does not have to leak, and its isolation structure has three kinds of schemes: enclosed compressor with spacing layer; Motor stator parcel laminar hermetic compressor; Hydraulic closed compressor with soft-disk piston.

Fig. 1 is the cross-sectional schematic of enclosed compressor with spacing layer, the notch place of stator core 3 is filled up with the nonmagnetic substance (such as using resin material) of high strength heatproof, (part of representing with black matrix among the figure), and extend to two ends, form a garden cylindrical shell of forming jointly by iron core teeth portion and this material, be called separation layer (★), Fig. 2 is the A-A profile of Fig. 1, from separation layer (★) structure as can be known, the electromagnetic structure of motor does not have destroyed, at the bottom of 8 jars of the cover 2 separation layer bodies 16 and the hermetically sealed can 14 common closed systems of forming of air inlet bag 13, separation layer and cover 2 and body 8 are to adopt adhesive seal, other place adopts welded seal, in order to improve the bonding strength of iron core and resin material, iron core two laminate surface up and down corrodes into cellular, iron core is answered pickling to clean and is done to the greatest extent, in order to guarantee the sealing of separation layer, before making separation layer and all adopt a sub-high pressure (5-50 atmospheric pressure) dipping lacquer (or other coating) afterwards, the micropore of possibility seepage is all filled up, other corrective measure has: the air-flow of air inlet pipe 1 flows to air inlet bag 13 around cylinder block outer wall after through the air gap between the stator rotor motor being cooled off again.

Fig. 3 is a stator parcel laminar hermetic compressor, almost completely the same with traditional hermetic compressor structure, crucial difference is carried out high pressure dipping lacquer (or other coating) to whole stator exactly, and make lacquer or coating certain thickness integument * be arranged one of stator outer surface formation, the external envelope face of whole stator is until inside all is closely knit integral body, such stator places hermetically sealed can, ammonia can not destroy integument the bag of coil is protected, the essence of this scheme is a kind of motor of high antiseptic property, the method of high pressure dipping lacquer (or other coating) can be applicable to whole electric manufacturing, stator will clean up before the high pressure dipping lacquer, the binding post 18 of motor and hermetically sealed can and 19 adopts irony or copper chrome-plated material, other corrective measure has: the air-flow of air inlet pipe 1 is under the guiding of air-flow guide 3, after air gap between the process stator rotor cools off motor, flow to air inlet bag 13 around cylinder block outer wall again.

Fig. 4 is the cutaway view of hydraulic pressure film sieve plug alive hermetic compressor, and the compressor of this structure mainly is the improvement of piston scenario-frame.

For the convenience of narrating, at first come principle of specification with piston compressor, and then be generalized to rotary compressor, in compressor of the present invention, between piston 1 and inlet valve 6 air bleeding valves 7 film 3 is arranged, it has the good anti-reciprocating fatigability of intensity oil resistivity, it has double effect: first, work to transmit the pressure and the suction of piston, be full of lubricating oil between piston and the film, the reciprocating motion of piston is delivered to film by lubricating oil, makes film produce reciprocating motion thereupon, the ennation that is equivalent to piston is a kind of hydraulic piston; Second, play the confining bed effect, it is as sealant, working medium is enclosed in the circulatory system that is made of intake valve air bleeding valve condenser choke valve evaporimeter etc., and can not enter the space of compressor power mechanism, so the power space that is made of motor (or mechanical motor) bent axle bar piston etc. can be opened wide airspace.It has solved following problem: 1, and the working medium closed question of air conditioning for automobiles; 2, avoided the corrosion of ammonia to motor, available ammonia has solved the problem in superseded fluorine Lyons as the working medium of hermetic compressor; 3, lubricating oil is lived by the film shelves, has avoided lubricating oil to enter circulating line; 4, improved radiating condition, can produce moving air by the adapted fan; 5, maintenanceability is good, and because of not needing hermetically sealed can, power and running part can directly keep in repair.

In this compressor, film 3 is limited range of movement by the taper garden platform of both sides symmetry, film 3 is also made garden frustum curved surface, be positioned at piston garden frustum 2 on one side enough intensity will be arranged, be drilled with abundant aperture above, piston makes fluid pass through the transmission of aperture realizable force, drives film and moves back and forth as piston; By valve block garden frustum 4 and 2 symmetries on one side, atresia only plays position-limiting action; The volume of two garden frustums (the deduction film takes up space) should equate with the volume of piston motion.The minimizing of fluid between piston and the film has designed a fluid replenishment valve 5 when replenishing compression, be contained in A position or B position all can, in the A position piston closes oil-in is arranged, also can save valve 5.Because the pressure differential at piston two ends is very big, be unfavorable for starting and operating efficiency, spring 8 of ad hoc meter is in the crankshaft end of piston, to offset the pressure that comes from working medium of the part other end, the pressure that elastic force produces on piston is lower than the high pressure of working medium, the low pressure of a little higher than working medium normally, under the prerequisite that does not influence starting performance, elastic force bigger can raise the efficiency.After the shutdown, spring is pressed in the intact position of exhaust with piston, and top thick stick 10 also withstands on the intact position of exhaust with film, in order to avoid the air pressure of working medium pushes back film, the fluid of hydraulic action is reduced, and is unfavorable for starting.There is one to take over a business 11 on the film, in order to avoid film is damaged.Because valve and lubricating oil have cut off, adopt the special oil that seals, or add some rubber structures at sealing part, improve the keying of valve.

This soft-disk piston structure is applicable to (comprising rotary pump) compression pump vavuum pump of all suction-discharge type valves, replaces piston pump with the pump of other form and gets final product.

Certainly, the motor compressor of this soft-disk piston formula can be made the structure of closed container equally, and as traditional compressor, motor and all motions place hermetically sealed can, their working medium contacts of also getting along well.Fill an amount of compressed gas in jar, be beneficial to starting and efficient.

Rubber or plastics that soft-disk piston adopts fiber to strengthen are made.

2, compressor according to claim 1 is characterized in that: 1, and axis hole and piston cylinder all adopt the steel bushing structure, to improve wearability; 2, alternate the building up of external diameter size of the silicon steel sheet of its motor stator becomes the heat radiation laminated structure; 3, the pure iron or the stainless steel pipe of employing outer surface degree copper to improve the surperficial thermal conductivity and the manufacturability of welding, guarantee that conduit and condenser and evaporimeter have good heat exchange.

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