CN204344467U - Fixed scroll assembly and there is its scroll compressor - Google Patents
Fixed scroll assembly and there is its scroll compressor Download PDFInfo
- Publication number
- CN204344467U CN204344467U CN201420823855.XU CN201420823855U CN204344467U CN 204344467 U CN204344467 U CN 204344467U CN 201420823855 U CN201420823855 U CN 201420823855U CN 204344467 U CN204344467 U CN 204344467U
- Authority
- CN
- China
- Prior art keywords
- fixed scroll
- vapor injection
- injection pipe
- cover plate
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model provides fixed scroll assembly and has its scroll compressor.This fixed scroll assembly comprises: fixed scroll, fixed scroll is provided with the second vapor injection path running through fixed scroll vertically; Thimble assembly, thimble assembly comprises second vapor injection pipe and is set in the heat-insulating structure outside second vapor injection pipe, and the inner chamber of second vapor injection pipe is connected with second vapor injection path.This fixed scroll assembly can prevent tonifying Qi overheated.
Description
Technical field
The utility model relates to apparatus of air conditioning field, in particular to a kind of fixed scroll assembly and the scroll compressor with it.
Background technique
Scroll compressor because its structure is simple, volume is little, lightweight, efficiency advantages of higher is widely used in common refrigerated air-conditioning system.But common refrigerated air-conditioning system is applied to north cold area heat or on air-source water heater time, when ambient temperature is lower, condensing temperature is higher, the pressure ratio of compressor will increase, this will cause, and compressor air suction end inspiratory volume increases, gas transmission coefficient reduces, thus cause compression mechanism shortage of heat, excessive discharge temperature, the working efficiency of compressor can be made to reduce rapidly, long-time running can increase the problem such as wearing and tearing, refrigeration oil inefficacy between mechanical part, greatly reduces the long-term reliability of compressor.
In order to solve above-mentioned series of problems, scholars have invented the scroll compressor with intermediate injection function by research.Between it is characterized in that within the compressor, compression chamber offers gas supplementing opening, and be communicated with intermediate pressure tonifying Qi (liquid) source of system by tonifying Qi pipeline, make middle compression refrigerant gas (liquid) body in system spray into the intermediate compression chamber of compressor.Object increases the air displacement of compressor, reduces delivery temperature, thus the ability of raising compressor, efficiency and reliability.
In existing intermediate injection technology, mostly be and offer the high tonifying Qi hole of positioning precision and connected pore channel on fixed scroll, connected pore channel is connected with middle pressure tonifying Qi (liquid) pipeline in system by being communicated with assembly again.There is the problems such as setting accuracy on work high, assembly technology complicated by the known prior art of its feature more, improve processing and assembly cost accordingly.
It is high that the patent that the patent No. is " 201320155277.2 " not only solves tonifying Qi hole machined positioning precision, the problem of technology for assembling complexity, also preventing from pressing in compressor the device of chamber medium pressure gas backflow by arranging second vapor injection path, reducing clearance volume, adding compression efficiency.
Analyzed by Experimental Comparison, above-mentioned patent second vapor injection pipe is directly exposed to compressor high-temperature exhaust air chamber, produce strong heat transfer by convection between the refrigerant gas meeting of High Temperature High Pressure and second vapor injection pipe, cause second vapor injection can there is certain overheat condition, have adverse influence to tonifying Qi performance.
Model utility content
Main purpose of the present utility model is the scroll compressor providing a kind of fixed scroll assembly and have it, to solve the problem of scroll compressor tonifying Qi weak effect of the prior art.
To achieve these goals, according to an aspect of the present utility model, provide a kind of fixed scroll assembly, fixed scroll assembly comprises: fixed scroll, fixed scroll is provided with the second vapor injection path running through fixed scroll vertically; Thimble assembly, thimble assembly comprises second vapor injection pipe and is set in the heat-insulating structure outside second vapor injection pipe, and the inner chamber of second vapor injection pipe is connected with second vapor injection path.
Further, heat-insulating structure comprises sleeve pipe, and casing pipe sleeve is located at outside second vapor injection pipe, and and between second vapor injection pipe, there is receiving cavity, be filled with insulation medium in receiving cavity or receiving cavity is vacuum or air.
Further, fixed scroll is provided with the one side of static vortex tooth for above, and the one side away from static vortex tooth of fixed scroll is the back side, and the back side of fixed scroll is provided with fluid groove, fluid groove and second vapor injection communication; Cover plate, cover plate covers on the back side of fixed scroll, cover plate is provided with cover plate gas supplementing opening, and the inner chamber of second vapor injection pipe is connected with fluid groove by cover plate gas supplementing opening.
Further, cover plate gas supplementing opening is provided with Anti-backflow structure, Anti-backflow structure is fixedly installed on cover plate gas supplementing opening place, second vapor injection pipe is connected on Anti-backflow structure, and Anti-backflow structure has the inner chamber of partition second vapor injection pipe and the closed condition of fluid groove and the open mode that the inner chamber of second vapor injection pipe is communicated with fluid groove.
Further, the side of the close fixed scroll of cover plate is provided with anti-reverse valve block baffle plate, anti-reverse valve block baffle plate protrudes towards fixed scroll, fixed scroll is provided with relief opening, anti-reverse valve block baffle plate is positioned at above relief opening, and relief opening is coated with can the anti-reverse valve block of movement between fixed scroll and anti-reverse valve block baffle plate.
Further, cover plate is also provided with relief hole, relief hole is connected with fluid groove, relief hole is provided with the pressure release control structure controlling relief hole opening and closing.
Further, the back side of fixed scroll is provided with the first closure gasket groove and the second closure gasket groove, and the first closure gasket groove is positioned at the inner side of fluid groove, and the second closure gasket groove is positioned at outside fluid groove.
Further, Anti-backflow structure comprises: shell, and shell is fixedly installed on cover plate gas supplementing opening place, and be control chamber in shell, second vapor injection pipe is fixedly connected on one end away from cover plate of shell, and inner chamber is connected with fluid groove by control chamber; Control piece, control piece is arranged on the mouth of pipe place of second vapor injection pipe, when Anti-backflow structure is in closed condition, the control piece shutoff mouth of pipe, when Anti-backflow structure is in open mode, control piece opens the mouth of pipe; Elastic recovery part, elastic recovery part is arranged between control piece and shell, by the position of control piece fexible bias pressure at the shutoff mouth of pipe.
According to another aspect of the present utility model, provide a kind of scroll compressor, scroll compressor comprises: compression case, compression case is provided with the mounting hole passed for second vapor injection pipe; Fixed scroll assembly, fixed scroll assembly is arranged in compression case, and fixed scroll assembly is above-mentioned fixed scroll assembly, and second vapor injection pipe passes compression case; Orbiter, orbiter coordinates with fixed scroll, and forms compression chamber.
Further, compression chamber comprises the sub-compression chamber of multiple continuous print, and second vapor injection passage is communicated with the sub-compression chamber of middle pressure.
Application the technical solution of the utility model, fixed scroll assembly comprises fixed scroll and thimble assembly.Fixed scroll is provided with the second vapor injection path running through fixed scroll vertically; Thimble assembly comprises second vapor injection pipe and is set in the heat-insulating structure outside second vapor injection pipe.The inner chamber of second vapor injection pipe is connected with second vapor injection path.By heat-insulating structure protection second vapor injection pipe, because the heat-transfer coefficient of heat-insulating structure is low, heat is not easily exchanged, effectively prevent the High Temperature High Pressure refrigerant in compression case and the refrigerant heat exchange in second vapor injection pipe, prevent tonifying Qi superheating phenomenon.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the scroll compressor according to embodiment of the present utility model;
Fig. 2 shows the sectional structure plan view of the fixed scroll according to embodiment of the present utility model;
Fig. 3 shows the sectional structure plan view of the fixed scroll according to another embodiment of the present utility model;
Fig. 4 shows the plan structure schematic diagram of the fixed scroll according to embodiment of the present utility model;
Fig. 5 shows the perspective view of the cover plate according to embodiment of the present utility model;
Fig. 6 shows the enlarged view at the B place in Fig. 1;
Fig. 7 shows the enlarged view at the A place in Fig. 1; And
Fig. 8 shows the partial enlarged drawing of the scroll compressor according to another embodiment of the present utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, fixed scroll; 1a, static vortex tooth; 2, second vapor injection path; 3, compression chamber; 4, orbiter; 4a, dynamic vortex tooth; 5a, 5b, fluid groove; 5c, the second closure gasket groove; 5d, the first closure gasket groove; 6, cover plate; 6a, planar end plate; 7, cover plate gas supplementing opening; 8, anti-reverse valve block baffle plate; 9, anti-reverse valve block; 10, relief opening; 11, Anti-backflow structure; 12, second vapor injection pipe; 13, shell; 14, dividing plate; 15, steel ball; 16, spring; 17, housing exhaust cavity; 18, intakeport; 19, cross slip-ring; 20, upper bracket; 21, eccentric crankshaft; 21a, bias turn; 22, oil guiding hole; 23a, motor stator; 23b, rotor; 24, lower support frame; 25, lower cover; 26, refrigeration oil; 27, compression case; 28, upper cover; 51, sleeve pipe; 52, sealing gas; 53a, the second gasket seal; 53b, the first gasket seal; 55, thimble assembly; 56, relief hole; 57, pressure release valve block; 91, bolt hole; 92, pressure release baffle plate; 93, screw; 96, housing relief opening.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Fig. 1 to 8, according to embodiment of the present utility model, fixed scroll assembly comprises fixed scroll 1 and thimble assembly 55.Fixed scroll 1 is provided with the second vapor injection path 2 running through fixed scroll 1 vertically; The heat-insulating structure that thimble assembly 55 comprises second vapor injection pipe 12 and is set in outside second vapor injection pipe 12.The inner chamber of second vapor injection pipe 12 is connected with second vapor injection path 2.By heat-insulating structure protection second vapor injection pipe 12, because the heat-transfer coefficient of heat-insulating structure is low, heat is not easily exchanged, effectively prevent the High Temperature High Pressure refrigerant in compression case and the refrigerant heat exchange in second vapor injection pipe 12, prevent tonifying Qi superheating phenomenon.
Wherein, heat-insulating structure comprises sleeve pipe 51, and sleeve pipe 51 is set in outside second vapor injection pipe 12, and and between second vapor injection pipe 12, there is receiving cavity, be filled with insulation medium in receiving cavity or receiving cavity is vacuum or air.
Adopt the scroll compressor structure of this fixed scroll assembly simple, at the outer increase of second vapor injection pipe 12 thimble assembly preventing tonifying Qi overheated 55.
Two symmetrically arranged second vapor injection paths 2 are offered at fixed scroll 1 back side, the middle pressure chamber of the compression chamber 3 that second vapor injection path 2 is formed with orbiter 4 with fixed scroll 1 is communicated with, and ensure that second vapor injection path 2 is not communicated with the air aspiration cavity of compression chamber 3, exhaust cavity, two second vapor injection paths 2 are communicated with fluid passage by fluid groove 5a, the 5b being opened in fixed scroll 1 back side.Wherein fluid groove can be the fluid groove 5a of annular or semiorbicular fluid groove 5b.Fixed scroll 1 back side is also offered can the first closure gasket groove 5d of the large and small O-ring seal of mounting O-shaped and the second closure gasket groove 5c, its effect played be when cover plate 6 by screw or rivet affixed be assemblied in fixed scroll 1 back side time, preventing the medium pressure gas imported in annular or semi-circular fluid groove 5a, 5b from leaking, the first gasket seal 53a and the second gasket seal 53b also can be adopted when not offering closure gasket groove to seal.
Cover plate 6 forms primarily of planar end plate 6a, cover plate gas supplementing opening 7, anti-reverse valve block baffle plate 8 and relief hole 56.It is fixed in the back side of fixed scroll 1 mainly through the mode such as screw or riveted joint.Anti-reverse valve block baffle plate 8 Main Function is anti-reverse valve block 9 the moving up and down in anti-reverse valve block baffle plate 8 lower end that restriction lower end is arranged on relief opening 10 place of fixed scroll 1, when compressor air-discharging, anti-reverse valve block 9 is limited in anti-reverse valve block baffle plate 8 lower end by air-flow jack-up, and gas is discharged by the gap around anti-reverse valve block baffle plate 8.When compressor quits work, anti-reverse valve block 9 falls to sheltering from relief opening 10, prevents the pressurized gas in housing exhaust cavity 17 to be back in compression chamber 3 and produces reversal phenomenon.Cover plate gas supplementing opening 7 is mainly fixedly connected with second vapor injection pipe 12 or Anti-backflow structure 11 by welding, force fit or other seal form, and cover plate gas supplementing opening 7 can be equal diameter through hole, also can be step-like through hole.Relief hole 56 mainly plays decompression function, open and close is carried out above by pressure release valve block 57, pressure release baffle plate 92 and screw 93 assembly, when compressor operating is in the situation that the low operating mode of pressure ratio and second vapor injection are closed, overcompression gas in compression chamber returns in fluid groove 5a, 5b by second vapor injection path 2, and then drained in housing exhaust cavity 17 by relief hole 56, play the effect of pressure release.
Anti-backflow structure 11 forms primarily of shell 13, dividing plate 14, steel ball 15, spring 16.Its Main Function plays the effect preventing gas backstreaming in fluid groove 5a, 5b.When carrying out intermediate injection tonifying Qi, when the pressure of medium pressure gas is greater than the intermediate pressure in the elastic force of spring 16 and compression chamber 3, gas can be entered in compression chamber 3 by fluid groove 5a, 5b and second vapor injection path 2 and press chamber.When intermediate injection tonifying Qi is closed, steel ball 15 is upspring the ingress of the intermediate hole that is sealably coupled to dividing plate 14 or second vapor injection pipe 12 by spring 16, prevent the medium pressure gas in compression chamber 3 from returning in second vapor injection pipe 12 and system blowdown pipe, play and prevent clearance volume from increasing, improve the effect of volumetric efficiency.Its housing 13 and cover plate 6 by welding, force fit or other Connecting format carry out affixed, dividing plate 14 and shell 13 are by weld or the mode such as force fit is connected.
The overheated thimble assembly 55 of anti-second vapor injection is primarily of sleeve pipe 51, and (solid has been exactly high temperature resistant, flame-proof thermal insulation material for air or the low gas of thermal conductivity, such as carbon dioxide, oxygen etc. for sealing gas 52.Also can be vacuum) composition.Main Function play to prevent in housing exhaust cavity 17 high-temperature high-pressure refrigerant gas directly and second vapor injection pipe 12 carry out heat transfer by convection.When not increasing sleeve pipe 51, compressor air-discharging high-temperature gas and second vapor injection pipe 12 directly carry out convection heat exchange, and heat output is comparatively large, and the gas superheat of second vapor injection is larger.Second vapor injection pipe 12 and compressor air-discharging hyperbaric chamber are isolated by the increase of sleeve pipe 51, diabatic process is exhaust cavity high-temperature gas and sleeve pipe 51 heat transfer by convection, conduction heat transfer is carried out between sleeve pipe and second vapor injection pipe 12, owing to being filled with the low gas of thermal conductivity between sleeve pipe 51 and second vapor injection pipe 12, reduce the degree of superheat of second vapor injection, improve tonifying Qi performance.Sleeve pipe 51 can be connected with between anti-reverse assembly, second vapor injection pipe and housing by seal form such as welding.
As shown in Figure 1, scroll compressor mainly comprises: fixed scroll 1 and static vortex tooth 1a; Orbiter 4 and dynamic vortex tooth 4a; Frame set comprises cylindrical compression casing 27, upper cover 28, lower cover 25, is fixed together by welding between each assembly; In order to support the upper bracket 20 of the orbiting and fixed scroll and to support the lower support frame 24 of eccentric crankshaft 21, be fixed on compression case 27 compression case 27 by the form of welding, the form that fixed scroll 1 is bolted and upper bracket 20 are fixed together, orbiter 4 is arranged between fixed scroll 1 and upper bracket 20 with 180 °, phase angle, and can move certain distance down in the axial direction; Eccentric crankshaft 21, comprises bias and turns 21a and oil guiding hole 22, and the refrigeration oil 26 that oil guide pipe or oil pump (not shown) suck passes to each parts needing lubrication by oil guiding hole 22; Rotor 23b is connected by interference with eccentric crankshaft 21, and is turned 21a under the driving of motor, made orbiter 4a turn round translation around fixed scroll 1 under the constraint of the anti-rotation of cross slip-ring 19 by eccentric.
Compressor operation is that the refrigerant gas of low-temp low-pressure is sucked into by compressor air suction mouth 18 in the crescent shape compression chamber 3 of fixed scroll tooth 1a and dynamic vortex tooth 4a composition, orbiter carries out rotation motion around fixed scroll 1 by eccentric crankshaft 21 under the driving of motor, this relative movement will cause compression chamber volume constantly to reduce, thus the pressure in increase compression chamber, to reach the working condition of regulation.Meeting the requirements of high-temperature high-pressure refrigerant gas drains in housing by quiet vortex relief opening 10, then discharges compressor by housing relief opening 96 and enters systemic circulation.
Above-mentioned is the air-conditioning system of ordinary cycle, if will cause under the working condition of high pressure ratio, compressor air suction end inspiratory volume will increase, gas transmission coefficient reduces, thus cause compressor to heat (cold) quantity not sufficient, excessive discharge temperature, the working efficiency of compressor can be made to reduce rapidly, long-time running can increase the problem such as wearing and tearing, refrigeration oil inefficacy between mechanical part, greatly reduces the long-term reliability of compressor.
In order to solve the problems such as compression efficiency under high pressure ratio condition is low, delivery temperature is high, scholars have invented the scroll compressor with intermediate injection function by research.Between it is characterized in that within the compressor, compression chamber offers gas supplementing opening, and be communicated with intermediate pressure tonifying Qi (liquid) source of system by tonifying Qi pipeline, make medium temperature and medium pressure refrigeration agent gas (liquid) body in system spray into the intermediate compression chamber of compressor.Object increases the air displacement of compressor, reduces delivery temperature, thus the ability of raising compressor, efficiency and reliability.
Two symmetrically arranged second vapor injection paths 2 are offered at fixed scroll 1 back side, chamber is pressed to be communicated with in the compression chamber 3 that second vapor injection path 2 and fixed scroll 1 and orbiter 4 are formed, and ensure that second vapor injection path 2 is not communicated with the air aspiration cavity of compressor, exhaust cavity, two second vapor injection paths 2 are communicated with by the annular or semi-circular fluid groove 5a, 5b being opened in fixed scroll 1 back side.Fixed scroll 1 back side is also offered can the first closure gasket groove 5d of the large and small annular sealing gaskets of mounting O-shaped and the second closure gasket groove 5c, the effect played be when cover plate 6 by screw or rivet affixed be assemblied in fixed scroll 1 back side time, preventing the medium pressure gas imported in annular or semi-circular fluid passage 5a, 5b from leaking, large and small gasket seal 53a, 53b also can be adopted when not offering closure gasket groove to seal.
Cover plate 6 forms primarily of planar end plate 6a, cover plate gas supplementing opening 7, anti-reverse valve block baffle plate 8 and relief hole 56.It is fixed in the back side of fixed scroll 1 mainly through the mode such as screw or riveted joint.Anti-reverse valve block baffle plate 8 Main Function is anti-reverse valve block 9 the moving up and down in anti-reverse valve block baffle plate 8 lower end that restriction lower end is arranged on fixed scroll relief opening 10 place, when compressor air-discharging, anti-reverse valve block 9 is limited in anti-reverse valve block baffle plate 8 lower end by air-flow jack-up, and gas is discharged by the gap around anti-reverse valve block baffle plate 8.When compressor quits work, anti-reverse valve block 9 falls to sheltering from relief opening 10, prevents the pressurized gas in housing exhaust cavity 17 to be back in compression chamber 3 and produces reversal phenomenon.Cover plate gas supplementing opening 7 is mainly fixedly connected with second vapor injection pipe 12 or Anti-backflow structure 11 by welding, force fit or other seal form, and cover plate gas supplementing opening 7 can be equal diameter through hole, also can be step-like through hole.Relief hole 56 mainly plays decompression function, open and close is carried out above by pressure release valve block 57, pressure release baffle plate 92 and screw 93 assembly, when compressor operating is in the situation that the low operating mode of pressure ratio and second vapor injection are closed, overcompression gas in compression chamber returns in fluid groove 5a, 5b by second vapor injection path 2, and then by relief hole 56 housing exhaust cavity 17, play the effect of pressure release.
Anti-backflow structure 11 forms primarily of shell 13, dividing plate 14, steel ball 15, spring 16.Its Main Function plays the effect preventing gas backstreaming in fluid groove 5a, 5b.When carrying out intermediate injection tonifying Qi, when the pressure of medium pressure gas is greater than the intermediate pressure in the elastic force of spring 16 and compression chamber 3, gas can be entered in compression chamber 3 by fluid groove 5a, 5b and second vapor injection path 2 and press chamber.When intermediate injection tonifying Qi is closed, steel ball 15 is upspring the ingress of the intermediate hole that is sealably coupled to dividing plate 14 or second vapor injection pipe 12 by spring 16, prevent the medium pressure gas in compression chamber 3 from returning in second vapor injection pipe 12 and system blowdown pipe, play and prevent clearance volume from increasing, improve the effect of volumetric efficiency.Its housing 13 and cover plate 6 by welding, force fit or other Connecting format carry out affixed, dividing plate 14 and shell 13 are by weld or the mode such as force fit is connected.
The overheated thimble assembly of anti-second vapor injection primarily of sleeve pipe 51, sealing gas 52 (air or the low gas of thermal conductivity) composition.Main Function play to prevent in housing exhaust cavity 17 high-temperature high-pressure refrigerant gas directly and second vapor injection pipe 12 carry out heat transfer by convection.When not increasing sleeve pipe 51, compressor air-discharging high-temperature gas and second vapor injection pipe 12 directly carry out convection heat exchange, and heat output is comparatively large, and the gas superheat of second vapor injection is larger.Second vapor injection pipe 12 and compressor air-discharging hyperbaric chamber are isolated by the increase of sleeve pipe 51, diabatic process is exhaust cavity high-temperature gas and sleeve pipe 51 heat transfer by convection, conduction heat transfer is carried out between sleeve pipe and second vapor injection pipe 12, owing to being filled with the low gas of thermal conductivity between sleeve pipe 51 and second vapor injection pipe 12, reduce the degree of superheat of second vapor injection, improve tonifying Qi performance.Sleeve pipe 51 can be connected with between anti-reverse assembly, second vapor injection pipe and housing by seal form such as welding.
Describe the specific works process of intermediate injection tonifying Qi compression in detail.When system intermediate injection tonifying Qi path is opened, when intermediate pressure in the elastic force being greater than Anti-backflow structure 11 medi-spring 16 by the refrigerant gas pressure in second vapor injection pipe 12 and compression chamber 3, gas can be entered in compression chamber 3 by fluid groove 5a, 5b and second vapor injection path 2 and press chamber, compression refrigerant gas and vapor permeation in compressing with fixed scroll 1 and orbiter 4, mixed gas by quiet vortex relief opening 10, backs down anti-reverse valve block 9 and drains in housing exhaust cavity 17 after compressing further.When compressor quits work, anti-reverse valve block 9 falls to sheltering from relief opening 10, prevents the pressurized gas in housing exhaust cavity 17 to be back to compression chamber and produces reversal phenomenon.When intermediate injection tonifying Qi path blockade, steel ball 15 is upspring the ingress of the intermediate hole that is sealably coupled to dividing plate 14 or second vapor injection pipe 12 by Anti-backflow structure 11 medi-spring 16, prevents the gas in compression chamber from returning in second vapor injection pipe 12 and system blowdown pipe.During low-pressure ratio operating mode, the overcompression gas in compression chamber is returned in fluid groove 5a, 5b by second vapor injection path 2, and then by relief hole 56 housing exhaust cavity 17, plays the effect of pressure release.
In other embodiments, second vapor injection pipe 12 and the cover plate gas supplementing opening 7 on cover plate 6 are directly by weld or force fit is connected and sealed.Specific works process is, when system intermediate injection tonifying Qi path is opened, when being greater than the intermediate pressure in compression chamber 3 by the refrigerant gas pressure in second vapor injection pipe 12, gas can be entered in compression chamber 3 by fluid groove 5a, 5b and second vapor injection path 2 and press chamber, compression refrigerant gas and vapor permeation in compressing with fixed scroll 1 and orbiter 4, mixed gas by quiet vortex relief opening 10, backs down anti-reverse valve block 9 and drains in housing exhaust cavity 17 after compressing further.When compressor quits work, anti-reverse valve block 9 falls to sheltering from relief opening 10, prevents the pressurized gas in housing exhaust cavity 17 to be back to compression chamber and produces reversal phenomenon.When intermediate injection tonifying Qi path blockade, retrain compression refrigerant gas in compression chamber 3 by the outside safety check near gas supplementing opening of compressor and be back to second vapor injection path.Feature in mode of execution two is simple, the easy processing of structure, assembling easily, but has lacked the Anti-backflow structure in mode of execution one, increases clearance volume compared with the structure of mode of execution one.
Fixed scroll 1 is provided with the one side of static vortex tooth 1a for above, and the one side away from static vortex tooth 1a of fixed scroll 1 is the back side, and the back side of fixed scroll 1 is provided with fluid groove 5a, 5b, and fluid groove 5a, 5b are communicated with second vapor injection path 2; Cover plate 6 covers on the back side of fixed scroll 1, cover plate 6 is provided with cover plate gas supplementing opening 7, and the inner chamber of second vapor injection pipe 12 is connected with fluid groove 5a, 5b by cover plate gas supplementing opening 7.Can fluid-encapsulated groove 5a, 5b by cover plate 6, ensure tonifying Qi reliability.
Reflux to prevent pressurized gas, guarantee equipment safety in operation, cover plate gas supplementing opening 7 is provided with Anti-backflow structure 11, Anti-backflow structure 11 is fixedly installed on cover plate gas supplementing opening 7 place, second vapor injection pipe 12 is connected on Anti-backflow structure 11, and Anti-backflow structure 11 has the inner chamber of partition second vapor injection the pipe 12 and closed condition of fluid groove 5a, 5b and the open mode that the inner chamber of second vapor injection pipe 12 is communicated with fluid groove 5a, 5b.
In the present embodiment, the side of the close fixed scroll 1 of cover plate 6 is provided with anti-reverse valve block baffle plate 8, anti-reverse valve block baffle plate 8 protrudes towards fixed scroll 1, fixed scroll 1 is provided with relief opening 10, anti-reverse valve block baffle plate 8 is positioned at above relief opening 10, and relief opening 10 is coated with can the anti-reverse valve block 9 of movement between fixed scroll 1 and anti-reverse valve block baffle plate 8.Anti-reverse valve block 9 can prevent High Temperature High Pressure refrigerant return.
In order to pressure release effective under low-pressure ratio operating mode, cover plate 6 is also provided with relief hole 56, and relief hole 56 is connected with fluid groove 5a, 5b, relief hole 56 is provided with the pressure release control structure controlling relief hole 56 opening and closing.Overvoltage refrigerant can be entered in compression case 27 by relief hole 56, realizes compression chamber 3 effectively pressure release.
In order to ensure the sealing of fluid groove 5a, 5b, and then ensure the reliability of second vapor injection, the back side of fixed scroll 1 is provided with the first closure gasket groove 5d and the second closure gasket groove 5c, first closure gasket groove 5d is positioned at the inner side of fluid groove 5a, 5b, and the second closure gasket groove 5c is positioned at outside fluid groove 5a, 5b.
Anti-backflow structure 11 comprises shell 13, control piece and elastic recovery part.
Shell 13 is fixedly installed on cover plate gas supplementing opening 7 place, and be control chamber in shell 13, second vapor injection pipe 12 is fixedly connected on one end away from cover plate 6 of shell 13, and inner chamber is connected with fluid groove 5a, 5b by control chamber; Control piece is arranged on the mouth of pipe place of second vapor injection pipe 12, when Anti-backflow structure 11 is in closed condition, and the control piece shutoff mouth of pipe, when Anti-backflow structure 11 is in open mode, control piece opens the mouth of pipe; Elastic recovery part is arranged between control piece and shell 13, by the position of control piece fexible bias pressure at the shutoff mouth of pipe.
In the present embodiment, cover plate 6 is provided with bolt hole 91 for construction bolt.
According to another aspect of the present utility model, provide a kind of scroll compressor, scroll compressor comprises compression case 27, fixed scroll assembly and orbiter 4.
Compression case 27 is provided with the mounting hole passed for second vapor injection pipe 12; Fixed scroll assembly is arranged in compression case 27, and second vapor injection pipe 12 passes compression case 27; Orbiter 4 coordinates with fixed scroll 1, and forms compression chamber 3.
Preferably, compression chamber 3 comprises the sub-compression chamber of multiple continuous print, and second vapor injection passage is communicated with the sub-compression chamber of middle pressure.
It should be noted that, the pressure of the sub-compression chamber of compression chamber 3 increases gradually along the direction near relief opening, the sub-compression chamber of middle pressure is the sub-compression chamber getting rid of minimum pressure chamber and maximum pressure chamber, and the concrete setting position of second vapor injection passage can be selected according to real needs.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
The fixed scroll back side arranges annular or semi-circular fluid passage in order to be communicated with intermediate injection gas supplementing opening, and the groove width of annular channels is set to 1 ~ 4 times that sprays tonifying Qi bore dia, and after ensureing sealing, fluid passage cross section is greater than the area of tonifying Qi bore dia.Arrange at groove two ends in order to mounting O-shaped o-ring groove or the smooth flat of installing gasket seal.
Design a kind of sealed cover, comprise planar end plate, anti-reverse valve block baffle plate and relief hole, or offer the through hole be connected with intermediate injection blowdown pipe, or offer the through hole be connected with Anti-backflow structure.
Design a kind of Anti-backflow structure, comprise shell, dividing plate, spring, steel ball, its housing lower end is designed to round-meshed back-up ring, can the assembly that forms of fixed placement spring and steel ball, upper end and be communicated with dividing plate by weld or force fit is fixed together.Offer manhole in the middle of dividing plate, upper end is welded with second vapor injection pipe and is communicated with, and lower end is moved and seal action in order to limit on steel ball.The steel ball wherein playing seal action also can adopt plane or cone shape valve block etc., and diameter is greater than bulkhead through-hole diameter, is less than internal diameter of outer cover.
Sealed cover and the fixed scroll back side are fixed together by screw or riveted joint form, and are prevented the leakage of gas in the fluid passage on quiet dish by large and small O type, gasket seal or the other forms of seal ring arranged.Install an anti-reverse valve block between anti-reverse valve block baffle plate on sealed cover and quiet dish relief opening, its diameter is greater than quiet dish diameter of outlet, is less than the diameter of anti-reverse valve block baffle holes.
Anti-reverse valve block baffle plate on sealed cover and valve block can form and be vented anti-reverse assembly, can play the effect preventing the pressurized gas in housing exhaust cavity to be back to compression chamber under compressor shutdown or abnormal gas exhaust situation.
Second vapor injection pipe can be connected with sealed cover by welding or adding the sealing of O type circle, or is connected by the middle Anti-backflow structure arranged.
It is outside that sleeve pipe can be arranged on second vapor injection pipe by forms such as force fit, welding or bolt seal, and ensure to be full of between sleeve pipe and second vapor injection pipe air or low other gases of heat-transfer coefficient.。
Adopt that cover plate for sealing its structure is simple, easily processing, cost be low, functionally can play being tightly connected, being vented effect that is anti-reverse and pressure release.
Medium pressure gas when Anti-backflow structure can well be avoided closing second vapor injection path in compression chamber is back to the gas flow in second vapor injection pipeline, reduces clearance volume, improves volumetric efficiency.
It is low that the annular of fixed scroll back connection second vapor injection path or semi-circular fluid passage have positioning precision, and easy processing, sealing cover and quiet coiling assemble the advantages such as easy.
The use of sleeve pipe reduces the degree of superheat of second vapor injection, has certain effect to raising tonifying Qi performance, reduction delivery temperature.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a fixed scroll assembly, is characterized in that, comprising:
Fixed scroll (1), described fixed scroll (1) is provided with the second vapor injection path (2) running through described fixed scroll (1) vertically;
Thimble assembly (55), described thimble assembly (55) comprises second vapor injection pipe (12) and is set in described second vapor injection pipe (12) heat-insulating structure outward, and the inner chamber of described second vapor injection pipe (12) is connected with described second vapor injection path (2).
2. fixed scroll assembly according to claim 1, it is characterized in that, described heat-insulating structure comprises sleeve pipe (51), described sleeve pipe (51) is set in described second vapor injection pipe (12) outward, and and between described second vapor injection pipe (12), there is receiving cavity, be filled with insulation medium in described receiving cavity or described receiving cavity is vacuum or air.
3. fixed scroll assembly according to claim 2, is characterized in that,
Described fixed scroll (1) is provided with the one side of static vortex tooth (1a) for above, the one side away from described static vortex tooth (1a) of described fixed scroll (1) is the back side, the back side of described fixed scroll (1) is provided with fluid groove (5a, 5b), and described fluid groove (5a, 5b) is communicated with described second vapor injection path (2);
Cover plate (6), described cover plate (6) covers on the back side of described fixed scroll (1), described cover plate (6) is provided with cover plate gas supplementing opening (7), the inner chamber of described second vapor injection pipe (12) is connected with described fluid groove (5a, 5b) by described cover plate gas supplementing opening (7).
4. fixed scroll assembly according to claim 3, it is characterized in that, described cover plate gas supplementing opening (7) is provided with Anti-backflow structure (11), described Anti-backflow structure (11) is fixedly installed on described cover plate gas supplementing opening (7) place, described second vapor injection pipe (12) is connected on described Anti-backflow structure (11), described Anti-backflow structure (11) has the inner chamber and described fluid groove (5a that cut off described second vapor injection pipe (12), closed condition 5b) and make the inner chamber of described second vapor injection pipe (12) and described fluid groove (5a, open mode 5b) be communicated with.
5. fixed scroll assembly according to claim 3, it is characterized in that, the side of the close described fixed scroll (1) of described cover plate (6) is provided with anti-reverse valve block baffle plate (8), described anti-reverse valve block baffle plate (8) is protruded towards described fixed scroll (1), described fixed scroll (1) is provided with relief opening (10), described anti-reverse valve block baffle plate (8) is positioned at described relief opening (10) top, described relief opening (10) is coated with can the anti-reverse valve block (9) of movement between described fixed scroll (1) and described anti-reverse valve block baffle plate (8).
6. the fixed scroll assembly according to claim 3 or 5, it is characterized in that, described cover plate (6) is also provided with relief hole (56), described relief hole (56) is connected with described fluid groove (5a, 5b), described relief hole (56) is provided with the pressure release control structure controlling described relief hole (56) opening and closing.
7. fixed scroll assembly according to claim 3, it is characterized in that, the back side of described fixed scroll (1) is provided with the first closure gasket groove (5d) and the second closure gasket groove (5c), described first closure gasket groove (5d) is positioned at the inner side of described fluid groove (5a, 5b), and described second closure gasket groove (5c) is positioned at described fluid groove (5a, 5b) outside.
8. fixed scroll assembly according to claim 4, is characterized in that, described Anti-backflow structure (11) comprising:
Shell (13), described shell (13) is fixedly installed on described cover plate gas supplementing opening (7) place, be control chamber in described shell (13), described second vapor injection pipe (12) is fixedly connected on one end away from described cover plate (6) of described shell (13), and inner chamber is connected with fluid groove (5a, 5b) by control chamber;
Control piece, described control piece is arranged on the mouth of pipe place of described second vapor injection pipe (12), when described Anti-backflow structure (11) is in described closed condition, the described control piece shutoff mouth of pipe, when described Anti-backflow structure (11) is in described open mode, described control piece opens the mouth of pipe;
Elastic recovery part, described elastic recovery part is arranged between described control piece and described shell (13), by the position of described control piece fexible bias pressure mouth of pipe described in shutoff.
9. a scroll compressor, is characterized in that, described scroll compressor comprises:
Compression case (27), described compression case (27) is provided with the mounting hole passed for second vapor injection pipe (12);
Fixed scroll assembly, described fixed scroll assembly is arranged in compression case (27), the fixed scroll assembly of described fixed scroll assembly according to any one of claim 1 to 8, described second vapor injection pipe (12) passes described compression case (27);
Orbiter (4), described orbiter (4) coordinates with described fixed scroll (1), and forms compression chamber (3).
10. scroll compressor according to claim 9, is characterized in that, described compression chamber (3) comprises the sub-compression chamber of multiple continuous print, and described second vapor injection passage is communicated with the sub-compression chamber of middle pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420823855.XU CN204344467U (en) | 2014-12-18 | 2014-12-18 | Fixed scroll assembly and there is its scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420823855.XU CN204344467U (en) | 2014-12-18 | 2014-12-18 | Fixed scroll assembly and there is its scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344467U true CN204344467U (en) | 2015-05-20 |
Family
ID=53227739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420823855.XU Expired - Fee Related CN204344467U (en) | 2014-12-18 | 2014-12-18 | Fixed scroll assembly and there is its scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952638A (en) * | 2016-06-21 | 2016-09-21 | 广东美的暖通设备有限公司 | Scroll compressor and air-conditioner |
| CN108035879A (en) * | 2017-12-29 | 2018-05-15 | 广东兴泽尔新能源科技有限公司 | The increasing enthalpy structure and screw compressor of compressor |
-
2014
- 2014-12-18 CN CN201420823855.XU patent/CN204344467U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952638A (en) * | 2016-06-21 | 2016-09-21 | 广东美的暖通设备有限公司 | Scroll compressor and air-conditioner |
| CN108035879A (en) * | 2017-12-29 | 2018-05-15 | 广东兴泽尔新能源科技有限公司 | The increasing enthalpy structure and screw compressor of compressor |
| CN108035879B (en) * | 2017-12-29 | 2023-08-22 | 广东兴泽尔新能源科技有限公司 | Enthalpy increasing structure of compressor and scroll compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201351607Y (en) | Rotary compressor with air injection device | |
| MY134396A (en) | High-low pressure dome type compressor | |
| CN204344467U (en) | Fixed scroll assembly and there is its scroll compressor | |
| CN105570127A (en) | Compressor and air conditioner with same | |
| CN107559192A (en) | A kind of compressor of twin-stage turbulent structure | |
| CN101825087B (en) | Double-injection-port enthalpy-increasing rotary compressor and air conditioning system using same | |
| CN104074752A (en) | Scroll compressor | |
| CN109654017A (en) | A kind of full envelope horizontal type scroll compressor | |
| CN201092959Y (en) | Rotary compressor for increasing enthalpy by utilizing muffling hole air injection | |
| CN205401109U (en) | Compressor and air conditioner with same | |
| CN204476755U (en) | Scroll compressor and air conditioner | |
| CN105317675B (en) | Varying capacity screw compressor | |
| CN109737056A (en) | A kind of vortex vapor compressor assembly and working method using water spray lubrication | |
| CN105443385B (en) | Two-stage enthalpy-increase compressor and air conditioner | |
| CN209943112U (en) | Air supplement structure of scroll compressor and scroll compressor | |
| CN211233426U (en) | Air conditioning system | |
| CN109681432A (en) | A kind of aeration valve and screw compressor of screw compressor | |
| CN203161530U (en) | Static scroll assembly and scroll compressor with same | |
| CN208330734U (en) | Single cylinder compressor with rolling rotor with second vapor injection | |
| CN208330750U (en) | Single cylinder compressor with rolling rotor of the open-type with second vapor injection | |
| CN207500111U (en) | A kind of compressor of twin-stage turbulent structure | |
| CN204140427U (en) | Rotary compressor | |
| CN208330733U (en) | Compressor with rolling rotor of the twin-tub with second vapor injection | |
| CN106286293B (en) | Screw compressor and air-conditioning system | |
| CN109555702A (en) | A kind of gas supplementary structure and screw compressor of screw compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20211218 |