CN101994695A - Totally closed rotor type refrigeration compressor for low-pressure difference cooling cylinder circulation - Google Patents

Totally closed rotor type refrigeration compressor for low-pressure difference cooling cylinder circulation Download PDF

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Publication number
CN101994695A
CN101994695A CN2009100565665A CN200910056566A CN101994695A CN 101994695 A CN101994695 A CN 101994695A CN 2009100565665 A CN2009100565665 A CN 2009100565665A CN 200910056566 A CN200910056566 A CN 200910056566A CN 101994695 A CN101994695 A CN 101994695A
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cylinder
heat insulation
cooling
wall
thermal
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CN101994695B (en
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吉阿明
童夏民
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Shanghai Qinchen Air Energy Thermal engineering Research Institute
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SHANGHAI QINCHEN AIR ENERGY THERMAL ENGINEERING RESEARCH INSTITUTE
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Priority to CN200910056566.5A priority Critical patent/CN101994695B/en
Priority to PCT/CN2010/001267 priority patent/WO2011020305A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention relates to a totally closed rotor type refrigeration compressor for low-pressure difference cooling cylinder circulation. The totally closed rotor type refrigeration compressor has the low-pressure difference cooling cylinder circulation thermodynamic advantages that: cooling tube and cooling cylinder air suction: the low temperature characteristics of an air suction chamber are maintained by continuous low temperature air suction and air suction mass flow rate is sufficiently enhanced so as to reduce compression net work and condensation loads; cooling cylinder compression: compression heat release is pushed to a cylinder wall cooled by low temperature to restrain exhaust overheating so as to reduce the compression net work and the condensation loads; efficient oil content realization: a purification evaporator pipeline enables pipeline temperature to approximate to TO so as to increase cooling capacity; motor heat release and exhaust overheating are used for heating and concentrating absorptive lubricating oil: cold damage flows are eliminated, and circulation efficiency is enhanced, thereby effectively solving the problems of two vicious circles, i.e. hot cylinder effect and cold damage flows, of the traditional rotor type compressor; and in addition, compared with the compressor with same delivery capacity, the totally closed rotor type refrigeration compressor doubly increases the cooling capacity and reduces the power more than 30 percent.

Description

Low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor
Technical field
A kind of steam compression type refrigeration compressor, especially a kind of full-sealed rotor type refrigeration compressor.
Technical background
The full-sealed rotor type refrigeration compressor be widely used in refrigeration and heat pump, but its industrial technology exists the two big technical failures that influences cycle efficiency: hot cylinder effect with damage to plants caused by sudden drop in temperature stream.
About 130 ℃ of motor windings operating temperatures, the auxiliary cooling of shell is arranged, and rotor does not have the auxiliary cooling of shell, about 150 ℃ of operating temperatures, directly conduct to and form heat-flash cylinder effect in the cylinder by main shaft and circulating oil path, the compression heat release also forms hot cylinder effect, hot cylinder effect rises cylinder wall operating temperature, air-breathing expanded by heating and lose cold, and improved the compression heat release, the compressor operating temperature is risen ..., therefore can be defined as hot cylinder machine, it is overheated and waste that power of motor is converted into exhaust, and improved the operating temperature and the condensation load of compressor.
Because design reasons, low voltage side cooling cylinder and low temperature suction line are in the high temperature and high pressure environment, the endoceliac compression exhaust of shell and lubricant oil are when contacting the cryogenic object surface that is lower than condensing temperature, the compression exhaust heat release is condensed into liquid state and is dissolved in the lubricant oil, formation is damaged to plants caused by sudden drop in temperature the stream outlet pipe of gushing out continuously and is entered refrigerating circulation, the liquid refrigerant flows of this oil-containing is full of or partly is full of evaporator pipeline and forms crushing and thermal resistance, influence refrigeration agent evaporation heat absorption, the evaporator pipeline temperature is raise, do not have enough heat transfer temperature differences, refrigeration agent can not fully evaporate heat absorption and the loss cold.Because the absorptivity of lubricant oil, refrigeration agent are difficult to evaporate fully from contain flow of oil and separate, so back-steam folder liquid suction cylinder evaporation heat absorption (loss cold) and Wet Compression, the further increase damaged to plants caused by sudden drop in temperature stream ...
The liquid refrigerant flows of this oil-containing is the fault fluid of the harmfulness in the cooling cycle system---damage to plants caused by sudden drop in temperature stream (just being found so far), caing be compared to is hypertension, high fat of blood, the hyperglycaemia illness of human vas.Damaging to plants caused by sudden drop in temperature stream also is a kind of vicious circle, shows as the disorder of the circulatory system and the loss of cold, is the aggravation of flow process degree damaged to plants caused by sudden drop in temperature in the suction temperature reduction, and has only the mass flow rate (cold) that reduces suction temperature evaporator effectiveness and the defeated vapour of compressor to improve? The benefit that damages to plants caused by sudden drop in temperature stream is to reduce the operating temperature of compressor, slows down hot cylinder effect, thereby its harmfulness is easy to be left in the basket, and cold has then run off.
Because hot cylinder effect and the double action that damages to plants caused by sudden drop in temperature stream, loss of refrigeration capacity is bigger, can only obtain 50% cold.
Summary of the invention
A kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor is (hereinafter to be referred as M 1), the circulation of its low differential pressure cooling cylinder is air-breathing by cold pipe cooling cylinder, cooling cylinder compression, efficient oil separate, motor heat release and the overheated several main aspects of recycling of exhaust constitute.
The low differential pressure cooling cylinder circulation of full-sealed rotor type refrigeration compressor realizes by comprising the following aspects.
1, insulation type cylinder:
Heat insulation between cylinder wall and the cylinder body.
Thickness is δ 1Cylinder wall and cylinder body between the heat insulation seam of distribution isocentric circular arc heat insulation; The joint of cylinder wall and cylinder body is the strong point of cylinder wall, the strong point heat insulation: equidistantly distribute the outer heat insulation seam or screw is heat insulation as outer insulation hole of one section circular arc on the cylinder body in its outside; The filling thermal-protective material promptly becomes thermal-protective coating again in heat insulation seam.
2, sucking pipe is heat insulation:
Conduit outer wall is connected with housing, and the sucking pipe outer wall has the heat insulating tube that is tightly connected, and heat insulating tube outer wall and conduit endoporus and the suction port that is positioned on the cylinder body are tightly connected; Air-breathing heat insulating tube is made with thermal-protective material.
3, heat insulation cooling type cylinder:
Heat insulation and the cooling of cylinder wall.
Low pressure air suction side cylinder wall is defined as cooling cylinder; High pressure gas side cylinder wall is defined as hot cylinder, and for getting rid of the compression heat release, hot cylinder constitutes with the cooling block that is equipped with coolant flow channel, has heat insulation seam heat insulation between cooling cylinder and cooling block and the cylinder body, and space or screw are heat insulation outside having on the cylinder body of the outside of the strong point, cooling block thickness δ 3＞δ 1
The coolant flow channel of cooling block:
Coolant flow channel is distributed on the center of arc's line that enters the mouth between screw and the outlet screw, and the inlet screw is connected respectively with the outlet screw introduces cooling fluid c outside housing 1Cooling duct, outside housing, draw cooling fluid c 2Cooling duct, the cooling duct outer wall has in thermal-protective coating and the housing chamber object heat insulation and heat insulation and be tightly connected with housing, cooling fluid is tapped refrigerant or other cooling fluid of unit.
4, the work air chamber is heat insulation:
The air chamber wall of cylinder upper and lower cover has the air chamber heat insulation ring heat insulation respectively, circle exceeds with the indoor circle of coating gas in the air chamber heat insulation ring, the cylindrical of air chamber heat insulation ring is stretched by the cylinder wall facing epitaxy, when the insulation type cylinder, exceed, exceed δ to cover cooling block when the heat insulation cooling type cylinder with the heat insulation seam that covers cylinder wall 3＞δ 1The air chamber heat insulation ring is surperficial thermal-protective coating.
Air chamber moving element surperficial heat insulation:
The outer round surface of rolling rotor has thermal-protective coating, slide plate surface heat insulation.
Outer round surface thermal-protective coating, the slide plate of air chamber heat insulation ring, rolling rotor are made with wear-resisting thermal-protective material.
Cold pipe cooling cylinder is air-breathing: the low-temperature characteristics of induction chamber in the breathing process, low temperature refrigeration air-breathing by continuous low temperature and hot cylinder keeps, with the condensation load and the compression net work of air-breathing mass flow rate of abundant raising (cold) and reduction unit cold.
Cooling cylinder compression: will compress heat release and push to, and reduce the compression net work to restrain the overheated formation of exhaust, and further reduce the condensation load of unit cold by subcooled cooling block cylinder wall.The cooling cylinder compression has only heat insulation cooling type cylinder to realize.
5, the mist of oil of exhaust, oil droplet separate.
At M 1Outlet pipe in the top shell chamber connects the umbrella shape disk cover, domed metal screen is equipped with in umbrella shape disk cover bottom, and the space between umbrella shape disk cover and the metal screen constitutes the unhurried current chamber, separates mist of oil and oil droplet to reduce the exhaust flow velocity, reduce exhaust and carry lubricant oil, purify evaporator pipeline.
6, the recycling of the overheated and motor heat release of exhaust:
The bottom of stretching to the immersion oil chamber is chewed in the oil suction of shaft-driven oil pump, contains the more bottom lubricant oil of liquid refrigerant with absorption, utilizes the hot properties heating lubricant oil of rotor, eliminates and damages to plants caused by sudden drop in temperature stream and condensing lubricant oil.The housing outer wall is incubated with thermal-protective coating, prevents scattering and disappearing of motor (stator, rotor) heat release and exhaust superheat, fully improves the oil temperature, eliminates and damage to plants caused by sudden drop in temperature stream and condensing lubricant oil.
7, roughly be divided into three types according to implementation content:
● tabula rasa type M 1: adopt the insulation type cylinder,
Figure B2009100565665D0000031
Promptly adopt the upper and lower cover of existing routine and rolling rotor, slide plate.
● heat insulation type M 1: adopt the insulation type cylinder, the work air chamber is heat insulation.
● full effective type M 1: adopt heat insulation cooling type cylinder, work air chamber heat insulation.
Description of drawings
The AB comparison diagram of Fig. 1 is the plan view of insulation type cylinder.
Fig. 2 is tabula rasa type M 1Partial sectional view.
Fig. 3 is heat insulation type M 1Partial sectional view.
Fig. 4 is the plan view of heat insulation cooling type cylinder.
Fig. 5 is the rear view of cooling block 30 among Fig. 4.
Fig. 6 is the sectional view that cooling block 30 launches along center of arc's line among Fig. 5.
Fig. 7 is full effective type M 1Partial sectional view.
Fig. 8 is heat insulation type M 1Main sectional view.
Fig. 9 is the rolling rotor plan view of outer round surface thermal-protective coating engaged column wrapping wire.
Figure 10 is the rolling rotor plan view that dovetail groove is arranged between outer round surface thermal-protective coating and the metal junction plane.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is described in further detail.
1, tabula rasa type M 1
Referring to accompanying drawing 1, Fig. 2: suction port 1, spring eye 2, slide plate oilhole 3, vane slot 4, cylinder body 5, positioning hole 6, screw 7, cylinder wall 8, heat insulation seam 9, exhaust skewed slot 10, the strong point 11, outer heat insulation seam 12, main bearing hole oil groove 13, cylinder top head 14, main shaft 15, silencer cover 16, screw 17, housing 18, steam-cylinder lower cover 19, supplementary bearing hole oil groove 20, eccentric wheel 21, rolling rotor 22, conduit 23, heat insulating tube 24, sucking pipe 25, bend pipe 26.
The insulation type cylinder:
Heat insulation between cylinder wall 8 and the cylinder body 5: thickness δ 1Cylinder wall 8 and cylinder body 5 between the heat insulation seam 9 of distribution isocentric circular arc heat insulation, cylinder wall 8 is strong points 11 of cylinder wall 8 with the joint (the disconnection section of heat insulation seam 9) of cylinder body 5; The strong point 11 heat insulation: equidistantly distribute one section outer heat insulation seam 12 or screw 7 is heat insulation as outer insulation hole on its outside cylinder body 5; The thickness δ of cylinder wall 8 1Determine its rigidity, as the thickness δ of cylinder wall 8 2＜δ 1When thin, the strong point 11 number needs will increase to guarantee rigidity, utilize this moment screw 7 heat insulation as outer insulation hole as far as possible.
Sucking pipe heat insulation:
The outer wall of conduit 23 is connected with housing 18, and its endoporus is consistent and coaxial with the suction port 1 on the cylinder body 5, and sucking pipe 25 outer walls have the heat insulating tube 24 that is tightly connected, and the outer wall of heat insulating tube 24 and conduit 23 endoporus, suction port 1 are tightly connected; Heat insulating tube 24 usefulness thermal-protective materials are made.Bend pipe 26 connects liquid vapour knockout drum and sucking pipe 25.
Have the flexiplastic king when making in heat insulating tube 24 usefulness: conduit 23 is used copper pipe, sucking pipe 25 hard metal pipe, the at first outer wall of heat insulating tube 24 and conduit 23 endoporus, suction port 1 close-fitting (an amount of interference assembling), again sucking pipe 25 outer wall interference are pushed heat insulating tube 24 endoporus, then the outer wall at conduit 23 applies centripetal force with blunt mouthful of roller
Figure B2009100565665D0000041
Rotation is reined in pipe and further reinforced seal; Interference assembly method between sucking pipe 25 outer walls and flexible heat insulating tube 24 endoporus, also can be with cold cover method---sucking pipe is cooled to low-temperature condition directly inserts heat insulating tube 24 endoporus, or the hot jacket method---the compressor heating is directly inserted heat insulating tube 24 endoporus to the sucking pipe 25 of cold state.
Tabula rasa type M 1Cylinder upper and lower cover 14,19, air chamber moving element rolling rotor 22 and the conventional existing compressor part of slide plate 53 usefulness, therefore the work air chamber only has cylinder wall 8 heat insulation, is called for short tabula rasa type M 1
2, heat insulation type M 1
Still continue to use above-mentioned insulation type cylinder, comprise that sucking pipe is heat insulation.
Work air chamber heat insulation:
Referring to accompanying drawing 3: cylinder upper and lower cover 14,19 has air chamber heat insulation ring 27,29 heat insulation respectively at the air chamber wall.The exradius R of air chamber heat insulation ring 27,29 2Stretched by the cylinder wall facing epitaxy that heat insulation seam 9 exceeds on the cylinder body 5 to cover, interior circle radius then exceeds with the indoor circle of coating gas; If the cylindrical of rolling rotor 22 and main shaft 15 center line minimum distances are R 1, the interior radius of a circle≤R of air chamber heat insulation ring then 1Air chamber heat insulation ring 27,29 is surperficial thermal-protective coating.
Air chamber moving element surperficial heat insulation: rolling rotor 22 outer round surface have thermal-protective coating 28, and the wear-resisting thermal-protective material of slide plate 53 usefulness is made.
Air chamber heat insulation ring 27,29, rolling rotor outer round surface thermal-protective coating 28 are made with wear-resisting thermal-protective material.
3, full effective type M 1
Heat insulation and cooling between the cylinder wall of heat insulation cooling type cylinder and the cylinder body.
Referring to accompanying drawing 4,5,6,7: cooling block 30, inlet screw 31, outlet screw 32, runner inserted sheet 33, weld seam 34, air chamber heat insulation ring 35,36, cooling duct 37b, ductule 38, heat insulating tube 39.
Low pressure air suction side cylinder wall 8 is defined as cooling cylinder.
High pressure gas side cylinder wall is defined as hot cylinder, and for getting rid of the compression heat release, hot cylinder constitutes with the cooling block 30 that is equipped with coolant flow channel; The thickness δ of cooling block 30 3＞δ 1, at vane slot 4 places to left down square neck tiltedly to reduce the area of its shared vane slot 4.Have heat insulation seam 9 heat insulation between cooling cylinder 8 and cooling block 30 and the cylinder body 5, heat insulation seam 12 or screw 7 are heat insulation outside having on the outside of the strong point 11 cylinder body 5.
The coolant flow channel of cooling block 30:
Coolant flow channel is distributed on inlet screw 31 and center of arc's line of outlet between the screw 32, and two runner inserted sheets 33 of upper and lower correspondence constitute the continuous passage that a plurality of U-shapeds are connected mutually, 34 sealings of two weld seams of upper and lower end face and fixing coolant flow channel; Inlet screw 31 is connected respectively with outlet screw 32 introduces cooling fluid c outside housing 18 1Cooling duct 37a and outside housing 18, draw cooling fluid c 2Cooling duct 37b; Cooling duct 37a, 37b outer wall have object in thermal-protective coating and housing 18 chambeies heat insulation, seal heat insulation the connection with ductule 38 endoporus that outer wall is connected in housing 18; Between cooling duct 37a, 37b outer wall and ductule (copper pipe) 38 endoporus with having heat insulating tube that flexible plastics king makes 39 when heat insulation: heat insulating tube 39 interference are assemblied between ductule 38 endoporus and cooling duct 37a, the 37b outer wall, then apply centripetal force at ductule 38 outer walls with blunt mouth roller
Figure B2009100565665D0000051
Rotation is reined in the seal of tube and is connected.
Work air chamber heat insulation:
The air chamber wall of cylinder upper and lower covers has air chamber heat insulation ring 35,36 heat insulation.The exradius R of air chamber heat insulation ring 35,36 3By the cylinder wall facing epitaxy stretch to cover cooling block 30 exceed, interior circle radius then exceeds with the indoor circle of coating gas; Air chamber heat insulation ring 35,36 is surperficial thermal-protective coating.Because the thickness δ of cooling block 30 3＞δ 1So, with heat insulation type M 1R compares 3＞R 2Air chamber moving element rolling rotor 22 outer round surface have thermal-protective coating 28 and slide plate 53 surfaces heat insulation.
Referring to accompanying drawing 8: outlet pipe 45, umbrella shape disk cover 46, metal screen 47, motor windings 48, rotor iron core 49, stator iron core 50, stator cooling hole 51, main shaft oilhole 52, slide plate 53, spring 54, dovetail groove 55, oil suction chew 56, magnet 57.
4, M 1The mist of oil of exhaust, oil droplet separate.
At M 1Outlet pipe 45 in the top shell chamber connects the umbrella shape disk cover 46 that spherical metal screen 47 is equipped with in the bottom, space between umbrella shape disk cover 46 and the metal screen 47 constitutes the unhurried current chamber to reduce the exhaust flow velocity, metal screen 47 separates mist of oil and the oil droplet that enters unhurried current chamber exhaust, reduce exhaust and carry flow rate of lubricating oil, purify the oil content of evaporator pipeline, make the evaporator pipeline temperature fully near evaporating temperature T O
5, M 1The recycling that motor heat release and exhaust are overheated:
The oil suction of shaft-driven oil pump is chewed 56 and is stretched to bottom, immersion oil chamber, contain the more bottom lubricant oil of liquid refrigerant with absorption, utilize the hot properties of rotor in circulating oil path, to heat lubricant oil, make liquid refrigerant in the lubricant oil be converted into the steam state exhaust and eliminate and damage to plants caused by sudden drop in temperature stream.
At the outer wall of housing 18, comprise top cover and bottom, establish thermal insulation layer or be coated with thermal insulating coating, prevent the motor heat release of motor stator and rotor formation and the heat dissipation that thermosetting is crossed in exhaust, with the cavity temperature of the oily gentle housing 18 of abundant raising immersion oil chamber, condensing lubricant oil is eliminated and is damaged to plants caused by sudden drop in temperature stream.
6, the surperficial thermal-protective coating of work air chamber parts:
Referring to accompanying drawing 9,10: edge line 58, wrapping wire 59, dovetail groove 60.
Rolling rotor 22 outer round surface thermal-protective coatings 28, when adopting process for surface coating to make: embedding spiral wrapping wire 59 between its coating (but the wrapping wire predetermined fixed is in metal junction plane) or open dovetail groove 60 at the metal junction plane, with the combination force between strengthening surface coating 28 and the metal junction plane; Cover coat is wear-resisting thermal-protective material (as thermal insulation ceramics etc.).
Rolling rotor about in the of 22 the two ends outer round surface stay metal edge line 58.
Referring to accompanying drawing 3,7,8: the air chamber heat insulation ring 27,29 or 35,36 of cylinder upper and lower cover 14,19 is surperficial thermal-protective coating, can adopt paster technique to make; When adopting process for surface coating to make, open dovetail groove 55 at the metal junction plane equally, with strengthening surface coating 27,29 or 35,36 and the metal junction plane between combination force; Paster and cover coat are wear-resisting thermal-protective material (as thermal insulation ceramics etc.).

Claims (10)

1. low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor, comprise cylinder, cylinder upper and lower covers, rolling rotor, slide plate, suction tracheae etc., it is characterized in that: described cylinder is the insulation type cylinder, heat insulation between its cylinder wall (8) and the cylinder body (5): thickness is δ 1Cylinder wall (8) and cylinder body (5) between the heat insulation seam of distribution isocentric circular arc (9) heat insulation, the joint of cylinder wall (8) and cylinder body (5) is the strong point (11) of cylinder wall; The strong point (11) heat insulation: equidistantly distribute one section outer heat insulation seam (12) or screw (7) is heat insulation as outer insulation hole on its outside cylinder body (5); The thickness δ of cylinder wall (8) 1Determine its rigidity, as cylinder wall thickness δ 2＜δ 1When thin, the number needs of the strong point (11) will increase to guarantee rigidity; In heat insulation seam (9,12), be thermal-protective coating behind the filling thermal-protective material.
2. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 1, it is characterized in that: sucking pipe (25) heat insulation: the outer wall of conduit (23) is connected with housing (18), the endoporus of conduit (23) is coaxial with the suction port (1) on the cylinder body (5), sucking pipe (25) outer wall has the heat insulating tube (24) that is tightly connected, and the outer wall of heat insulating tube (24) and conduit (23) endoporus, suction port (1) are tightly connected; Heat insulating tube (24) is made with thermal-protective material.
3. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 2, it is characterized in that: described cylinder is heat insulation cooling type cylinder, and the heat insulation and cooling between its cylinder wall (8) and the cylinder body (5): low pressure air suction side cylinder wall (8) is defined as cooling cylinder; High pressure gas side cylinder wall is defined as hot cylinder, and hot cylinder constitutes with the cooling block (30) that is equipped with coolant flow channel; There is heat insulation seam (9) heat insulation between cooling cylinder (8) and cooling block (30) and the cylinder body (5), has outer heat insulation seam (12) or screw (7) heat insulation on the strong point (11) outside cylinder body (5); The coolant flow channel of cooling block: coolant flow channel is distributed on the center of arc's line that enters the mouth between screw (31) and the outlet screw (32), and inlet screw (31) is connected respectively with outlet screw (32) introduces cooling fluid c outside housing (18) 1Cooling duct (37a) and outside housing, draw cooling fluid c 2Cooling duct (37b); Cooling duct (37a, 37b) outer wall has in thermal-protective coating and housing (18) chamber object heat insulation and seal heat insulation the connection with housing (18); Cooling fluid c 1Be unit tapped refrigerant or other cooling fluids.
4. according to claim 1 or 2 or 3 described a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressors, it is characterized in that: the heat insulation of air chamber parts cylinder upper and lower covers (14,19) of working: when using the insulation type cylinder, the air chamber wall of cylinder upper and lower cover (14,19) has air chamber heat insulation ring (27,29) heat insulation respectively, the exradius R of air chamber heat insulation ring (27,29) 2The heat insulation seam of being stretched to cover on the cylinder body (5) by the cylinder wall facing epitaxy (9) exceeds, and interior circle radius then exceeds with the indoor circle of coating gas, and the center line minimum distance of the cylindrical of rolling rotor (22) and main shaft (15) is R 1, the interior radius of a circle≤R of air chamber heat insulation ring then 1When using heat insulation cooling type cylinder, the air chamber wall of cylinder upper and lower cover (14,19) has air chamber heat insulation ring (35,36) heat insulation respectively, the exradius R of air chamber heat insulation ring (35,36) 3Stretched to cover cooling block (30) by the cylinder wall facing epitaxy and to exceed, interior circle radius then exceeds with the indoor circle of coating gas, because cooling block (30) thickness δ 3＞δ 1, R compares with application insulation type cylinder 3＞R 2Air chamber heat insulation ring (27,29,35,36) is surperficial thermal-protective coating.
5. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 4, it is characterized in that: the surperficial heat insulation of air chamber moving element of working: the outer round surface of rolling rotor (22) has thermal-protective coating (28), and slide plate (53) is made with wear-resisting thermal-protective material; The outer round surface thermal-protective coating (28) of air chamber heat insulation ring (27,29,35,36), rolling rotor (22) is made with wear-resisting thermal-protective material.
6. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 3 is characterized in that: cooling block (30) is located to left down square neck tiltedly to reduce the area of the shared vane slot of cooling block (30) (4) at vane slot (4); Be distributed in the coolant flow channel on center of arc's line between inlet screw (31) and outlet screw (32): two the runner inserted sheets (33) by upper and lower correspondence constitute the continuous passage that a plurality of U-shapeds are connected mutually, and two weld seams of upper and lower end face (34) seal and fixing coolant flow channel inserted sheet (33).
7. according to claim 2 or 3 described a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressors, it is characterized in that: the outer wall of conduit (23) is connected with housing (18), its endoporus is consistent with the suction port (1) on being positioned at cylinder body (5) and coaxial, when heat insulating tube (24) was made with the plastics king with flexibility: conduit (23) was used copper pipe, sucking pipe (25) is used the hard metal pipe, the at first outer wall of heat insulating tube (24) and conduit (23) endoporus, suction port (1) close-fitting, it is an amount of interference assembling, again sucking pipe (25) outer wall interference is pushed heat insulating tube (24) endoporus, then the outer wall at conduit (23) applies centripetal force with blunt mouthful of roller
Figure F2009100565665C0000021
Rotation is reined in pipe and further reinforced seal; Interference assembly method between sucking pipe (25) outer wall and flexible heat insulating tube (24) endoporus, also can be with cold cover method---sucking pipe is cooled to low-temperature condition directly inserts heat insulating tube (24) endoporus, or the hot jacket method---the compressor heating is directly inserted heat insulating tube (24) endoporus to the sucking pipe of cold state (25).
8. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 3, it is characterized in that: cooling duct (37a, 37b) outer wall and outer wall are connected in the heat insulating tube made from the flexiplastic king between copper ductule (38) endoporus of housing (18) (39) when heat insulation: heat insulating tube (39) interference is assemblied between ductule (38) endoporus and cooling duct (37a, the 37b) outer wall, then applies centripetal force at ductule (38) outer wall with blunt mouthful of roller
Figure F2009100565665C0000031
Rotation is reined in the seal of tube and is connected.
9. according to claim 1 or 2 or 3 described a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressors, it is characterized in that: the mist of oil of exhaust, oil droplet separate: the outlet pipe in the case top chamber (45) connects the umbrella shape disk cover (46) that spherical metal screen (47) is equipped with in the bottom, space between umbrella shape disk cover (46) and the metal screen (47) constitutes the flow velocity that flows slowly the chamber and reduce exhaust, metal screen (47) separates mist of oil and the oil droplet that enters unhurried current chamber exhaust, reduces exhaust and carries flow rate of lubricating oil; The oil suction of shaft-driven oil pump is chewed (56) and is stretched to bottom, immersion oil chamber; Housing (18) comprises that the outer wall of top cover and bottom establishes thermal insulation layer or be coated with thermal insulating coating.
10. a kind of low differential pressure cooling cylinder circuit full-sealed rotor type refrigeration compressor according to claim 5, it is characterized in that: the surperficial thermal-protective coating of work air chamber parts: rolling rotor (22) outer round surface thermal-protective coating (28) is when adopting process for surface coating to make, be embedded with spiral wrapping wire (59) between its coating, wrapping wire (59) but predetermined fixed in the metal junction plane, or open dovetail groove (60) at the metal junction plane, with the combination force between reinforced metal junction plane and the cover coat, the outer round surface of rolling rotor (22) upper and lower end leaves metal edge line (58), the wear-resisting thermal-protective material of cover coat is as thermal insulation ceramics etc.; Air chamber heat insulation ring (27,29) or (35,36) of cylinder upper and lower cover (14,19) are surperficial thermal-protective coating, can adopt paster technique to make, when adopting process for surface coating to make, open dovetail groove (55) at the metal junction plane equally, with the combination force between strengthening surface coating and the metal junction plane, the wear-resisting thermal-protective material of paster or cover coat is as thermal insulation ceramics etc.
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CN111271279A (en) * 2018-12-04 2020-06-12 上海海立电器有限公司 Compressor and assembling method thereof
CN111306061A (en) * 2018-12-11 2020-06-19 广东美芝精密制造有限公司 Compressor and refrigerating device
CN111306061B (en) * 2018-12-11 2022-07-08 广东美芝精密制造有限公司 Compressor and refrigerating device
CN114542471A (en) * 2022-03-07 2022-05-27 珠海凌达压缩机有限公司 Oil blocking cap structure, compressor and air conditioner
CN114542471B (en) * 2022-03-07 2023-06-30 珠海凌达压缩机有限公司 Oil blocking cap structure, compressor and air conditioner

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