CN110360131A

CN110360131A - Vapour compression machine

Info

Publication number: CN110360131A
Application number: CN201810314770.1A
Authority: CN
Inventors: 周晓东; 邓聪; 王建宁
Original assignee: Nantong Dart Pollrich Fan Co Ltd
Current assignee: Nantong Dart Pollrich Fan Co Ltd
Priority date: 2018-04-10
Filing date: 2018-04-10
Publication date: 2019-10-22

Abstract

The present invention provides a kind of vapour compression machine, the vapour compression machine includes shell, impeller, main shaft, driving part and common bed, the impeller set is set to one end of the main shaft and is contained in the shell, the other end of the relatively described impeller of the main shaft is connected to the driving part, the common bed carries the shell, the main shaft and the driving part, the impeller includes wheel hub, blade assembly, wheel cap and wheel disc, the main shaft is embedded in the wheel hub, one end of the blade assembly is fixedly connected on the wheel hub, the other end is connected to the wheel cap and the wheel disc, the wheel cap and the wheel disc are connected to the two sides of the wheel hub, wind deflector is additionally provided on the wheel disc, one end of the wind deflector is connected to the wheel disc, the other end is connected to the side of the wheel hub, the wind deflector cooperates the wheel hub to draw Baffle medium enters in the impeller.The vapour compression machine provided by the invention, is with a wide range of applications.

Description

Vapour compression machine

Technical field

The present invention relates to mechanical equipment technical field more particularly to a kind of vapour compression machines.

Background technique

Vapour compression machine is compressed to the secondary steam generated in preceding road evaporization process, and the pressure and temperature of steam are improved Degree, can reenter the heat recovery equipment in vaporization cycle, be widely used in chemical industry, medical treatment, food concentration, solution Multiple important industrial circles such as recycling.Domestic vapour compression machine manufacturer at present, can not also the excellent steaming of production performance Vapour compressor, product is relatively not mature enough, and high-end vapour compression machine relies on import for a long time.Its chief reason is impeller Power output cannot achieve efficient conversion, and the overall performance of vapour compression machine is not excellent enough.

Summary of the invention

In view of this, impeller mechanical efficiency is relatively high, complete machine it is necessary to provide a kind of improved vapour compression machine It can relative good.

The present invention provides a kind of vapour compression machine, the vapour compression machine include shell, impeller, main shaft, driving part and Common bed, the impeller set are set to one end of the main shaft and are contained in the shell, the relatively described impeller of the main shaft The other end be connected to the driving part, the common bed carries the shell, the main shaft and the driving part, institute Stating impeller includes wheel hub, blade assembly, wheel cap and wheel disc, and the main shaft is embedded in the wheel hub, one end of the blade assembly It is fixedly connected on the wheel hub, the other end is connected to the wheel cap and the wheel disc, and the wheel cap and the wheel disc are connected to institute The two sides of wheel hub are stated, wind deflector is additionally provided on the wheel disc, one end of the wind deflector is connected to the wheel disc, and the other end connects It is connected to the side of the wheel hub, the wind deflector cooperates the wheel hub guidance fluid media (medium) to enter in the impeller.

Further, through-hole is offered at the center of the wheel hub, the through-hole includes the first segment for closing on the wheel cap And the second segment of the wheel disc is closed on, the second segment of the through-hole is tapered, and the impeller is connected by the second segment of the through-hole It is connected to the main shaft, the main shaft is connect with the wheel hub cone match.

Further, it is interference fitted between the main shaft and the wheel hub.

Further, the wind deflector and the wheel hub and the wheel cap form air guide structure, and the air guide structure includes First face, the second face and third face, the one end in second face are connected to first face, and the other end is connected to the third Face, first face and second face are two sections of lateral surfaces that the wheel hub closes on the wheel cap, and the third face is described Wind deflector is greater than second face adjacent to the angle that the side of the wheel cap, first face and the hub central axle line are formed The angle formed with the hub central axle line, the angle that the third face and the hub central axle line are formed are greater than described the The angle formed on one side with the hub central axle line.

Further, the blade assembly includes the first blade and the second blade, first blade and second leaf The setting of piece interval, the length of first blade are less than the length of second blade, and first blade is connected to the wheel One end of hub is three-dimensional torque structure, and first blade does the fluid media (medium) entered in the impeller with second blade Function and compression fluid medium.

Further, it is provided with blade tooth on first blade and second blade, institute is corresponded on the wheel disc The position for stating blade tooth offers welding groove, the blade tooth be embedded in the welding groove and by welding connecting mode with it is described Wheel disc is fixedly connected.

Further, the blade tooth is fixed to each other with the wheel disc by the connection type of plug welding.

Further, carbon ring seal between the main shaft and the shell.

Further, the shell includes air intake cover and outlet housing, and the air intake cover is used to enter for steam, the outlet air Cover is additionally provided with damping system, the damping system is described for reducing for being discharged for compressed steam on the main shaft The vibration of main shaft.

Further, the vapour compression machine further includes lubricating system, and the lubricating system is set to the common bed Go up and be connected to the main shaft, the lubricating system for lubricating the bearing being set on the main shaft, the main shaft with it is described Shaft coupling is provided between driving part, one end of the shaft coupling is connected to the main shaft, and the other end is connected to the driving The shaft of component.

The vapour compression machine provided by the invention, the blade assembly is vertically arranged, and improves doing for the impeller Function power improves the sealing performance of the vapour compression machine by shell described in the carbon ring seal and the main shaft, thus The overall performance for improving the vapour compression machine, is with a wide range of applications.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the vapour compression machine in an embodiment of the present invention.

Fig. 2 is the structural schematic diagram at another visual angle of vapour compression machine shown in Fig. 1.

Fig. 3 is the structural schematic diagram at the another visual angle of vapour compression machine shown in Fig. 1.

Fig. 4 is the stereoscopic schematic diagram of impeller shown in Fig. 1.

Fig. 5 is the partial cutaway view schematic of impeller shown in Fig. 4.

Fig. 6 is the schematic cross-sectional view of impeller shown in Fig. 4.

Fig. 7 is the part-structure enlarged drawing of impeller shown in Fig. 6.

Fig. 8 is the part-structure enlarged drawing at the A of vapour compression machine shown in Fig. 1.

Fig. 9 is the connection status figure of impeller and wheel cap shown in Fig. 4.

Figure 10 is the connection status figure of impeller and another visual angle of wheel cap shown in Fig. 9.

Figure 11 is the connection status figure of wheel hub and wheel disc shown in Fig. 4.

Figure 12 is the connection status figure of wheel hub and another visual angle of wheel disc shown in Figure 11.

Figure 13 is the part-structure enlarged drawing at the B of vapour compression machine shown in Fig. 1.

Main element symbol description

The present invention that the following detailed description will be further explained with reference to the above drawings.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It should be noted that it can be installed directly in another group when component is referred to as " being installed in " another component On part or there may also be components placed in the middle.When a component is considered as " being set to " another component, it be can be directly It connects and is arranged on another component or may be simultaneously present component placed in the middle.When a component be considered as " being fixed on " another Component, it, which can be, is directly anchored on another component or may be simultaneously present component placed in the middle.

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases Any and all combinations of the listed item of pass.

It is the structural representation of the vapour compression machine 100 in an embodiment of the present invention also referring to Fig. 1 to Fig. 3, Fig. 1 Figure, Fig. 2 be Fig. 1 shown in another visual angle of vapour compression machine 100 structural schematic diagram, Fig. 3 be Fig. 1 shown in vapour compression machine 100 again The structural schematic diagram at one visual angle.Secondary steam of the vapour compression machine 100 for being generated in the compressed steam circulatory system, by steaming Vapour does work to improve the temperature and pressure of steam, and compressed steam is reentered in vaporization cycle, is reached to two The thermal cycle of secondary steam vaporization potential utilizes.

In present embodiment, vapour compression machine 100 is applied in chemical field.It is appreciated that steam provided by the invention Compressor 100 is not limited to be applied in chemical field, in other implementations, vapour compression machine provided by the invention 100 can also be applied in other industrial circles such as medical treatment, food concentration, solution recycling.

Vapour compression machine 100 include shell 10, impeller 20, main shaft 30, driving part 40 and common bed 50, shell 10, Main shaft 30 and driving part 40 are connected to common bed 50, and impeller 20 is contained in shell 10, and one end of main shaft 30 is connected to leaf Wheel 20, the other end are connected to driving part 40, and shell 10 is for protecting impeller 20, and impeller 20 is used for compressed steam, and main shaft 30 is used It is rotated in impeller 20, driving part 40 is for driving main shaft 30 to rotate, and common bed 50 is for carrying shell 10, impeller 20, main shaft 30 and driving part 40.40 driving spindle 30 of driving part rotates and the impeller 20 in shell 10 is driven to rotate, impeller 20 compressions enter the steam in shell 10, so that the pressure of steam increases, temperature increases, and the steam after increasing and heating passes through shell Body 10 is discharged and is reentered in steam circulation, to realize the recycling to secondary steam vaporization potential.

Shell 10 coats and protects impeller 20, the impeller 20 of high-speed rotation can be isolated with external environment, avoid people Member causes safety accident because touching impeller 20, and shell 10 has closed accommodating chamber 11, and the accommodating chamber 11 is for accommodating impeller 20, one end of accommodating chamber 11 is tightly connected by external steam generating equipment (not shown), and the other end and main shaft 30 are tightly connected. Air intake cover 12 and outlet housing 13 are provided on shell 10, air intake cover 12 is set between impeller 20 and external steam occurrence of equipment, The secondary steam that external steam generating equipment generates is entered in shell 10 by air intake cover 12.In present embodiment, air intake cover The central axis of 12 central axis and impeller 20 substantially overlaps, to improve the working efficiency of vapour compression machine 100.

Outlet housing 13 is arranged on the side of shell 10, and outlet housing 13 is for guiding compressed steam to reenter steam In circulation.In present embodiment, the air outlet of outlet housing 13 is horizontally disposed, and outlet housing 13 is threadedly coupled with shell 10.It can manage Solution, in other implementations, the air outlet of outlet housing 13, which can also use, other installations such as is vertically arranged, is obliquely installed Mode, can also other connection directions be fixed to each other using welding, riveting, glue is solid etc. between outlet housing 13 and shell 10.

In present embodiment, for the ease of installation, shell 10 and air intake cover 12 and outlet housing 13 use separate structure.It can be with Understand, in other implementations, shell 10 and air intake cover 12 and outlet housing 13 can also use integrally formed mode, with Improve the bonding strength and stability of shell 10 and air intake cover 12 and outlet housing 13.

It is referring to Figure 4 together the stereoscopic schematic diagram of impeller 20 shown in Fig. 1 to Fig. 8, Fig. 4, Fig. 5 is impeller 20 shown in Fig. 4 Partial cutaway view schematic, Fig. 6 be Fig. 4 shown in impeller 20 schematic cross-sectional view, Fig. 7 be Fig. 6 shown in impeller 20 part-structure Enlarged drawing, Fig. 8 are the part-structure enlarged drawing at the A of vapour compression machine shown in Fig. 1.Impeller 20 is sheathed on one end of main shaft 30, Impeller 20 can rotate under the drive of main shaft 30, and do work to the steam entered inside impeller 20 by air intake cover 12.

Impeller 20 includes wheel hub 21, blade assembly 22, wheel cap 23 and wheel disc 24, and one end of blade assembly 22 is connected to wheel hub 21, the other end is connected to wheel cap 23 and wheel disc 24, and wheel hub 21, wheel cap 23 and wheel disc 24 surround a compression chamber 25, blade assembly 22 It is placed in the compression chamber 25, the compression chamber 25 is for compressing secondary steam to improve the temperature and pressure of secondary steam.

Wheel hub 21 is substantially in hollow cylindrical, and the approximate center of wheel hub 21 offers through-hole 211, the center of through-hole 211 The central axis of axis and wheel hub 21 substantially overlaps, and wheel hub 21 is sheathed on main shaft 30 by through-hole 211, and through-hole 211 is for allowing Main shaft 30 penetrates, and is fastenedly connected so that wheel hub 21 can be realized with external connection shaft.

In present embodiment, through-hole 211 is set as step-like, through-hole 211 include first segment 212 and with 212 phase of first segment The second segment 213 of connection, first segment 212 is cylindrical, and second segment 213 is in cone, and second segment 213 is along center axis Direction is gradually extended from wheel cap 23 to wheel disc 24, sets tapered surface for second segment 213, wheel hub 21 is enabled to more closely to detain Close main shaft 30.

Blade assembly 22 is three-dimensional twisted blade, and blade assembly 22 is used for scrolling secondary steam, secondary steam is involved in pressure In contracting chamber 25.Blade assembly 22 includes multiple first blades 221 and multiple first leaves that setting is spaced apart from each other with the first blade 221 The radial laying and annular distribution of piece 2222, the first blade 221 and the first blade 2222 along impeller 20 are on impeller 20.First leaf One end of piece 221 and the first blade 2222 is concordant with wheel cap 23 and wheel disc 24, and the length of the first blade 221 is with respect to the first blade 2222 length will be grown, each first blade 221 along impeller 20 be radially disposed at two the first blades 2222 substantially in At the heart, the approximate center that is radially disposed at two first blade 221 of each first blade 2222 along impeller 20.First Leaf 21 and the length of the first blade 2222 are staggered, and can be improved the acting ability of impeller 20.

In present embodiment, the first blade 221 is three-dimensional torque blade, and one end of the first blade 221 is set to two the Between one blade 2222, the other end is three-dimensional twisted and is connected on the lateral surface of wheel hub 21.First blade 221 and the first blade 2222 one end far from wheel hub 21 are the output end of blade assembly 22 to export compressed working fluid；First blade 221 It is the input terminal of blade assembly 22 close to one end of wheel hub 21 to be involved in the working fluid entered in impeller 20.

In present embodiment, the quantity of the quantity of the first blade 221 and the first blade 2222 is 12.It can manage Solution, in other implementations, the quantity of the first blade 221 can also using the other quantity in addition to 12, first The quantity of blade 2222 can also be using the other quantity in addition to 12, as long as the first blade 221 and the first blade 2222 It can cooperate, realize the compressed action to working fluid.

In present embodiment, in order to improve the acting fan-out capability of blade assembly 22, the first blade 221 and the first blade 2222 are vertically installed in wheel cap 23 and wheel disc 24, and the first blade 221 and the first blade 2222 have with vapor stream medium at this time There is biggish contact area windward, impeller 20 has relatively high acting ability.

Wheel disc 24 is connected to the other end of 21 relative vane component 22 of wheel hub.In present embodiment, wheel disc 24 and wheel cap 23 Separate center axis thereof plate face it is arranged in parallel, wheel disc 24 is approximately perpendicular to the central axis of wheel hub 21.It is appreciated that In other implementations, wheel disc 24 and wheel cap 23 can also be mutually inclined setting using other angles.

Wind deflector 26 is additionally provided on wheel disc 24, one end of wind deflector 26 is connected to wheel disc 24, and the other end is connected to wheel hub 21, wind deflector 26 reduces secondary steam to reinforce the structural strength of impeller 20 and secondary steam is guided to be involved in compression chamber 25 Air-flow separating layer when into compression chamber 25.

In present embodiment, wind deflector 26 is obliquely installed on wheel hub 21, the folder of wind deflector 26 and 21 central axis of wheel hub Angle is in 30 ° to 60 °, and impeller 20 has relatively high wind-guiding efficiency at this time.It is appreciated that being led in other connection types Aerofoil 26 can also be set on wheel hub 21 using the other angles in addition to above-mentioned 30 ° to 60 °.

In present embodiment, wind deflector 26 is fixedly connected on wheel hub 21 and wheel disc 24 using the connection type of welding.It can be with Understand, in other implementations, other connection types such as wind deflector 26 can also use riveting, glue solid are fixedly connected on Wheel hub 21 and wheel disc 24.

Impeller 20 provided by the invention, the lateral surface and wind deflector 26 of wheel hub 21 form air guide structure 27, so that Secondary steam can be quickly involved in impeller 20, reduce the air-flow separating layer of secondary steam, improve the ability to work of impeller 20.

It include the first face 271, the second face 272 and the to guide secondary steam to enter air guide structure 27 inside impeller 20 Three faces 273, the first face 271 and the second face 272 are two sections of lateral surfaces that wheel hub 21 closes on wheel cap 23, and third face 273 is wind deflector 26 close on the side of wheel cap 23, secondary steam pass sequentially through the first face 271, the second face 272 and third face 273 enter wheel cap 23 with Between wheel disc 24, improves in the temperature and pressure re-enter vaporization cycle of itself, reach after the acting of blade assembly 22 It is utilized to the thermal cycle to secondary steam vaporization potential.

First face 271 is greater than the second face 272 with the angle that 21 central axis of wheel hub is formed and is formed with 21 central axis of wheel hub Angle, the angle that third face and 21 central axis of wheel hub are formed is greater than the folder that the first face 271 is formed with 21 central axis of wheel hub Angle.Preferably, the angle that the first face 271 is formed with 21 central axis of wheel hub is 0 ° to 45 °, the second face 272 and 21 center of wheel hub The angle that axis is formed is 0 ° to 45 °, and the angle of third face 273 and the formation of 21 central axis of wheel hub is 30 ° to 60 °.

One end of main shaft 30 passes through shell 10, then protrudes into the through-hole 211 in wheel hub 21, and the other end is connected to driving part 40, main shaft 30 and the cooperation of wheel hub 21 are fixed, to realize the motion process of 30 impeller 20 of main shaft rotation.Main shaft 30 and impeller It is connected between 20 using the conical surface, i.e., one end that main shaft 30 protrudes into wheel hub 21 is set as taper, and second segment 213 is interior in wheel hub 21 Side is also configured as taper, and main shaft 30 protrudes into the second segment 213 of wheel hub 21, to realize mutually interconnection of the main shaft 30 with impeller 20 It connects.In present embodiment, in order to improve the bonding strength of main shaft 30 Yu impeller 20, it is interference fitted between main shaft 30 and impeller 20.

Impeller 20 provided by the invention, in order to avoid occurring the distortion due to three dimendional blade in traditional Impeller Machining Amplitude and angle are larger, and difficult problem, blade assembly 22 and wheel disc 24 in impeller 20 are welded caused by blade number is numerous Between be additionally provided with welding structure.

In traditional Impeller Machining, since the amplitude and angle of leaf curling are larger, the number of blade is more and intensive, weldering Bonding tool such as welding gun, welding wire are difficult to protrude on the contact surface of blade and wheel cap, wheel disc, naturally also can not just weld to blade Connect operation.The one end for only closing on wheel hub to blade is welded, and reduces the integrated connection intensity of impeller 20, in addition impeller Long working is generally required, it reduce the service lifes of impeller, or even can interfere to normal production.

Impeller 20 provided by the invention is additionally provided with welding structure between blade assembly 22 and wheel disc 24, to improve leaf The welded connecting intensity of piece component 22.

It is the connection status figure of impeller 20 and wheel cap 23 shown in Fig. 4, Figure 10 Fig. 9 also referring to Fig. 9 to Figure 12, Fig. 9 The connection status figure of shown impeller 20 and another visual angle of wheel cap 23, Figure 11 are the connection status of wheel hub 21 and wheel disc 24 shown in Fig. 4 Figure, Figure 12 are the connection status figure of wheel hub 21 and another visual angle of wheel disc 24 shown in Figure 11.

Using seperated welded structure form, impeller 20 first welds blade assembly 22 to be arranged impeller 20 provided by the invention In on wheel cap 23, then wheel hub 21 is welded and fixed with wheel disc 24 and is connect, finally one end by blade assembly 22 far from wheel cap 23 again It is welded and fixed and is set on wheel disc 24, process is fixedly connected with to impeller 20 to realize.

One end of first blade 221 and the first blade 222 is welded and fixed with wheel cap 23, at this time in the first blade 221 and Blade tooth 223 is set on one one end of blade 222 far from wheel cap 23, and blade tooth 223 is opposite to be convexly equipped in the first blade 221 and first On blade 222.

Position on wheel disc 24 corresponding to blade tooth 223 opens up the welding groove 241 for accommodating blade tooth 223, welds , each welding groove 241 in the accommodating one corresponding with the installation position of 22 blade tooth 223 of blade assembly that open up position of slot 241 A blade tooth 223.

In present embodiment, the quantity of welding groove 241 is 24, wherein 12 interval of welding groove 241 settings are used In accommodating spaced first blade 221, the setting of remaining 12 welding grooves 241 interval is for accommodating spaced the One blade 222.

In present embodiment, welding processing process for simplicity, the size for the blade tooth 223 being arranged on the first blade 221 Identical as 223 size of blade tooth being arranged on the first blade 222, the size of each welding groove 241 is also identical, at this time blade assembly 22 welding installation process relative ease.It is appreciated that in other implementations, the blade being arranged on the first blade 221 The size for the blade tooth 223 being arranged on the size of tooth 223 and the first blade 222 can be with difference, the size of welding groove 241 and every A 223 Corresponding matching of blade tooth, the installation accuracy of blade assembly 22 is relatively high at this time.

After blade tooth 223 is embedded in welding groove 241, blade tooth 223 and wheel disc 24 are fitting to connection, at this time blade tooth 223 with Welding material is inserted between welding groove 241, blade tooth 223 is fixed to each other by way of plug welding with wheel disc 24, to realize leaf The integral installation process of wheel 20.

Since blade assembly 22 and wheel disc 24 are fixed to each other by the way of plug welding, enable the entirety of blade assembly 22 It is fixedly connected on wheel disc 24, the bonding strength of impeller 20 improves, and impeller 20 is with higher while guaranteeing acting ability Bonding strength and service life.

It is the part-structure enlarged drawing at the B of vapour compression machine 100 shown in Fig. 1, main shaft 30 also referring to Figure 13, Figure 13 On be provided with carbocyclic ring 31, carbocyclic ring 31 is sheathed on main shaft 30, and carbocyclic ring 31 is set on shell 10 and opens up in fluted 14, and one end is solid Due to shell 10, the other end is fixed on main shaft 30, and carbocyclic ring 31 avoids shell for the gap between seal casinghousing 10 and main shaft 30 Steam in 10 avoids the decline that steam leaks with working efficiency to outward leakage.

In present embodiment, the quantity of carbocyclic ring 31 and groove 14 four, four carbocyclic rings 31 are arranged in parallel.It can manage Solution, in other implementations, the quantity of carbocyclic ring 31 and groove 14 is also with for four or less or four or more, as long as it can Realize the sealing to shell 10 and main shaft 30.

Damping system 32 is additionally provided on main shaft 30, damping system 32 is used to reduce the vibration of main shaft 30.Present embodiment In, damping system 32 buffers the vibration of main shaft 30 using existing hydraulic damping mode, by high-voltage oil liquid in main shaft 30 Flowing when vibration generates damping sense, to reduce and buffer the vibration of main shaft 30.It is appreciated that in other embodiments In, damping system 32 can also realize the slow use of bestirring oneself to main shaft 30 using other components such as bump leveller.

Driving part 40 is arranged on common bed 50, and driving part 40 is connected to main shaft 30, and driving part 40 is used for Main shaft 30 is driven to rotate under the energy supply of exterior source of energy.In present embodiment, driving part 40 is motor.It is appreciated that In other implementations, driving part 40 can also be using other driving elements such as hydraulic motor.

In present embodiment, shaft coupling 41, one end connection of shaft coupling 41 are provided between main shaft 30 and driving part 40 In main shaft 30, the other end is connected to driving part 40, and shaft coupling 41 is used to connect the shaft of main shaft 30 and driving part 40, and can To play the role of overload protection when main shaft 30 bears excessive load.

Common bed 50 is used to carry shell 10, impeller 20, main shaft 30 and driving part 40 for carrying common bed 50, Vapour compression machine 100 further includes lubricating system 60, and lubricating system 60 is set on common bed 50, and lubricating system 60 is connected to master Axis 30, lubricating system 60 is used to provide circulating oil lubrication for the bearing (not labeled) being arranged on main shaft 30, to guarantee main shaft The stability of 30 rotations.It is appreciated that when the use occasion without considering bearing lubrication, lubricating system 60 also be can be omitted.

Vapour compression machine 100 is involved in the secondary steam entered in impeller 20 by air intake cover 12, and impeller 20 compresses secondary steaming Vapour is simultaneously converted into the saturated vapor heated, then saturated vapor is passed through in vaporization cycle again, realizes to secondary steaming The thermal cycle that vapour vaporizes potential utilizes.

Vapour compression machine 100 provided by the invention, blade assembly 22 is vertically arranged, and improve impeller 20 does function Power improves the sealing performance of vapour compression machine 100, to improve vapour pressure by 31 seal casinghousing 10 of carbocyclic ring and main shaft 30 The overall performance of contracting machine 100, is with a wide range of applications.

Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention, And be not used as limitation of the invention, as long as in spirit of the invention, to made by embodiment of above Appropriate change and variation are all intended to fall within the scope of the claimed invention.

Claims

1. a kind of vapour compression machine, which is characterized in that the vapour compression machine includes shell, impeller, main shaft, driving part and public affairs With pedestal, the impeller set is set to one end of the main shaft and is contained in the shell, the relatively described impeller of the main shaft The other end is connected to the driving part, and the common bed carries the shell, the main shaft and the driving part, described Impeller includes wheel hub, blade assembly, wheel cap and wheel disc, and the main shaft is embedded in the wheel hub, and one end of the blade assembly is solid Surely it is connected to the wheel hub, the other end is connected to the wheel cap and the wheel disc, and the wheel cap and the wheel disc are connected to described The two sides of wheel hub, wind deflector is additionally provided on the wheel disc, and one end of the wind deflector is connected to the wheel disc, other end connection In the side of the wheel hub, the wind deflector cooperates the wheel hub guidance fluid media (medium) to enter in the impeller.

2. vapour compression machine as described in claim 1, which is characterized in that through-hole is offered at the center of the wheel hub, it is described Through-hole includes the second segment for closing on the first segment of the wheel cap and closing on the wheel disc, and the second segment of the through-hole is tapered, institute It states impeller and the main shaft is connected to by the second segment of the through-hole, the main shaft is connect with the wheel hub cone match.

3. vapour compression machine as claimed in claim 2, which is characterized in that be interference fitted between the main shaft and the wheel hub.

4. vapour compression machine as described in claim 1, which is characterized in that the wind deflector and the wheel hub and the wheel cap shape At air guide structure, the air guide structure includes the first face, the second face and third face, and the one end in second face is connected to described the On one side, the other end is connected to the third face, and first face and second face are that the wheel hub closes on the two of the wheel cap Section lateral surface, the third face are the wind deflector adjacent to the side of the wheel cap, first face and the hub central axle In the angle that the angle that line is formed is greater than second face and the hub central axle line is formed, the third face and the wheel hub The angle that the angle that mandrel line is formed is greater than first face and the hub central axle line is formed.

5. vapour compression machine as described in claim 1, which is characterized in that the blade assembly includes the first blade and the second leaf Piece, first blade and second spacing with blades are arranged, and the length of first blade is less than the length of second blade Degree, first blade are connected to one end of the wheel hub as three-dimensional torque structure, first blade and second blade To the fluid media (medium) acting entered in the impeller and compression fluid medium.

6. vapour compression machine as claimed in claim 5, which is characterized in that be all provided on first blade and second blade It is equipped with blade tooth, the position that the blade tooth is corresponded on the wheel disc offers welding groove, and the blade tooth is embedded in the welding It is fixedly connected in slot and by welding connecting mode with the wheel disc.

7. vapour compression machine as claimed in claim 6, which is characterized in that the company that the blade tooth and the wheel disc pass through plug welding The mode of connecing is fixed to each other.

8. vapour compression machine as described in claim 1, which is characterized in that carbon ring seal between the main shaft and the shell.

9. vapour compression machine as described in claim 1, which is characterized in that the shell includes air intake cover and outlet housing, described Air intake cover is used to enter for steam, and the outlet housing is used to be discharged for compressed steam, is additionally provided with damping on the main shaft System, the damping system are used to reduce the vibration of the main shaft.

10. vapour compression machine as described in claim 1, which is characterized in that the vapour compression machine further includes lubricating system, institute It states lubricating system and is set on the common bed and is connected to the main shaft, the lubricating system is set to described for lubrication Bearing on main shaft, is provided with shaft coupling between the main shaft and the driving part, one end of the shaft coupling is connected to institute Main shaft is stated, the other end is connected to the shaft of the driving part.