CN205370919U - Increase enthalpy part and have its compressor - Google Patents
Increase enthalpy part and have its compressor Download PDFInfo
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- CN205370919U CN205370919U CN201620049474.XU CN201620049474U CN205370919U CN 205370919 U CN205370919 U CN 205370919U CN 201620049474 U CN201620049474 U CN 201620049474U CN 205370919 U CN205370919 U CN 205370919U
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Abstract
The utility model discloses an increase the enthalpy part, it includes main shells assembly and arranges in the inside straight tube of main shells assembly, the lower extreme of straight tube with main shells assembly's lower extreme sealing connection, all the other parts of straight tube with form accommodation space between main shells assembly's the inner wall, wherein, be equipped with the backward flow hole on the lateral wall of straight tube, the backward flow hole is arrived the distance of main shells assembly lower extreme is greater than the backward flow hole is arrived the distance of main shells assembly upper end. The utility model discloses an increasing the enthalpy part and can effectively avoiding under the three jar modes tonifying qi refluence to lead to increasing the long -pending oil condition of enthalpy part when being used for the multi -cylinder doublestage to increase enthalpy variable volume compressor, consequently can improve the result of use that increases the enthalpy part, the life -span of avoiding the multi -cylinder doublestage to increase enthalpy variable volume compressor is reduced. The utility model also discloses a compressor.
Description
Technical field
This utility model relates to Compressor Technology field, is specifically related to a kind of increasing enthalpy parts.This utility model further relates to a kind of compressor.
Background technology
Two-stage enthalpy increasing frequency-changeable compressor owing to can keep efficient characteristic under worst cold case, thus occupies increasingly consequence in fields such as air-conditioning, water heater, freezing and refrigerations.But in the inferior refrigerating capacity of worst cold case, existing two-stage enthalpy increasing frequency-changeable compressor essentially twin-tub form, requires that high occasion suffers from row's quantitative limitation.Therefore, multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor is adopted to become inexorable trend.
The low-pressure stage of multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor has two or more cylinder (namely compressing mechanism), at least one of which cylinder can realize load operating by switching mechanism or unloading runs, thus realizing two kinds of high-low pressure volumetric ratio switchover operations, under the premise ensureing efficiency, when reaching specified heating capacity efficiency the best and low-temperature heating, promote the purpose of heating capacity.
But, increasing enthalpy parts of the prior art design principally for twin-tub Dual-level enthalpy adding compressor, when multi-cylinder Dual-level enthalpy adding compressor operates under multi-cylinder (such as triplex) pattern, flow backwards in QI invigorating and mend under the joint effect of gas carrying liquid, adopt and easily occur during the increasing enthalpy parts of prior art increasing the long-pending oil condition of enthalpy parts, thus the result of use increasing enthalpy parts not only can be affected, also the reliability of compressor operating can be had a negative impact.
Therefore, if the problem increasing the long-pending oil of enthalpy parts in multi-cylinder two-stage enthalpy increasing positive displacement compressor can effectively be overcome, the result of use increasing enthalpy parts under worst cold case can just be improved, thus improving the reliability of compressor.
Utility model content
Above-mentioned present situation in view of prior art, main purpose of the present utility model is in that providing a kind of increases enthalpy parts, it is it can be avoided that increase the long-pending oil situation of enthalpy parts when multi-cylinder two-stage enthalpy increasing positive displacement compressor runs under triplex pattern, thus improving increasing enthalpy parts result of use under worst cold case.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of increasing enthalpy parts, it includes main casing assembly and is placed in the straight tube of described main casing component internal, the lower end of the lower end of described straight tube and described main casing assembly is tightly connected, formed between remainder and the inwall of described main casing assembly of described straight tube and hold space, wherein, the sidewall of described straight tube is provided with return port, described return port to the distance of described main casing assembly lower end more than the described return port distance to described main casing assembly upper end.
Preferably, described return port to the distance of described straight tube upper end less than 1/10th of described length of straight pipe.
Preferably, described main casing assembly includes centrally located direct tube section and is positioned at tapered section of two ends, and wherein, the sidewall of described direct tube section includes inner concave arc surface part.
Preferably, the sidewall of described direct tube section also includes outer convex globoidal part, and described inner concave arc surface part and described outer convex globoidal part collectively form the sidewall of described direct tube section.
Preferably, described straight tube is coaxial with described outer convex globoidal part, and/or, described return port is towards described outer convex globoidal part.
Preferably, the axis of the upper port of described main casing assembly is positioned at the scope in described accommodation space.
Preferably, the upper port of described main casing assembly is connected to inlet tube, and described main casing component internal is stretched in the lower end of described inlet tube, and the mouth of pipe of the lower end of described inlet tube is towards described accommodation space.
Preferably, described main casing assembly be internally provided with diversion member, described diversion member is positioned at the top of described straight tube, and described diversion member has shield portions and flow passage component, wherein, described shield portions blocks the mouth of pipe of described straight tube upper end, and described flow passage component allows fluid from.
Preferably, the body of described diversion member is that flat board or umbrella shape part, described flat board or umbrella shape part are provided with the through hole as described flow passage component, and described through hole is arranged on described flat board or the edge of umbrella shape part.
The purpose of another aspect of the present utility model is in that to provide a kind of compressor, and it can be effectively taking place increasing enthalpy when triplex MODE of operation, and can keep higher operational reliability.
This purpose is achieved through the following technical solutions:
A kind of compressor, it includes foregoing increasing enthalpy parts.
Preferably, described compressor is multi-cylinder twin-stage positive displacement compressor.
Preferably, described main casing assembly includes centrally located direct tube section and is positioned at tapered section of two ends, the sidewall of described direct tube section includes inner concave arc surface part and outer convex globoidal part, and wherein, described inner concave arc surface part is consistent with the laminating of the outer surface in described compressor body portion.
Increasing enthalpy parts of the present utility model can be prevented effectively under triplex pattern when for multi-cylinder two-stage enthalpy increasing positive displacement compressor QI invigorating and flow backwards and cause increasing the long-pending oil condition of enthalpy parts, therefore the result of use increasing enthalpy parts can be improved, it is to avoid the service life reduction of multi-cylinder two-stage enthalpy increasing positive displacement compressor.The preferred version of increasing enthalpy parts of the present utility model can also ensure under ultralow temperature heating condition that the temperature rise increasing enthalpy parts meets requirement, improves the performance of compressor further.
Accompanying drawing explanation
It is described according to the preferred implementation of increasing enthalpy parts of the present utility model and compressor hereinafter with reference to accompanying drawing.In figure:
Fig. 1 is the increasing enthalpy principle schematic of Dual-level enthalpy adding compressor；
Fig. 2 is the typical structure schematic diagram increasing enthalpy parts of prior art；
Fig. 3 is the structural representation increasing enthalpy parts of a kind of preferred implementation of the present utility model；
Fig. 4 is the cross-sectional structure schematic diagram increasing enthalpy parts of another kind of preferred implementation of the present utility model；
Fig. 5 is the structural representation increasing enthalpy parts of another preferred implementation of the present utility model, including diversion member；
Fig. 6 schematically illustrates the diversion member of a kind of structure；
Fig. 7 schematically illustrates the diversion member of another kind of structure；
Fig. 8 is the schematic top plan view of the compressor increasing enthalpy parts with Fig. 4；
Fig. 9 is the schematic front view of the compressor of Fig. 8.
Detailed description of the invention
As shown in Figure 1, in the air-conditioning or heat pump water heater system of application Dual-level enthalpy adding compressor, from condenser coolant out and after first throttle valve A carries out one-level throttling by after flash vessel, enter and increase enthalpy parts, then in the intermediate cavity of compressor, carry out QI invigorating with the aerofluxus after one stage of compression and mix.Entrance vaporizer after two-step throttle is carried out through second throttle B from flash vessel another part coolant out.Therefore, increasing enthalpy parts is the critical component connecting flash vessel with compressor intermediate cavity, and it affects the functional realiey increasing enthalpy QI invigorating.
It should be noted that the pressure on system QI invigorating pipeline is superfeed pressure, the pressure of compressor two inter-stage is intermediate pressure.For multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor, increasing enthalpy QI invigorating is with the pressure reduction of superfeed pressure and intermediate pressure for motive force, and overcomes the resistance of pipeline to be added in compressor under the effect of this motive force.
In prior art, no matter it is for twin-tub two-stage enthalpy increasing frequency-changeable compressor or multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor, increasing enthalpy parts is all that the return port 3 on straight tube 2 designs the bottom (being positioned at bottom for main casing assembly 1) increasing enthalpy parts, as in figure 2 it is shown, the design to gas-liquid separator is similar in structure.But, this utility model finds, multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor and twin-tub two-stage enthalpy increasing frequency-changeable compressor exist difference in principle so that both feature in increasing enthalpy QI invigorating is also incomplete same:
Under declared working condition, the transfiguration cylinder of multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor is in unloaded state, and it is basically identical with the ruuning situation of twin-tub two-stage enthalpy increasing frequency-changeable compressor.Now, the coolant increasing the suction of enthalpy parts is the medium pressure gas after system once throttles.Telling oil rate due to the aerofluxus of compressor and be subject to the strict control of self and system, thus it is considerably less to increase the coolant oil content in enthalpy parts, return port effect now is only small, and therefore the result of use impact for increasing enthalpy parts is little.
Under worst cold case, in order to meet the needs that heating capacity is substantially improved, the transfiguration cylinder of multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor can realize load operating, now high-low pressure volumetric ratio diminishes, and (What is more, long-term reliability in order to ensure R32 low form heat pump, triplex high-low pressure volumetric ratio can be configured to only small), under equal operating mode, intermediate pressure can improve accordingly.Then, at system capacity than under switching or other non-stable situation, it is possible to there will be the superfeed pressure situation lower than intermediate cavity pressure, coolant and the mixture of lubricating oil after one-level aerofluxus, it is possible to can flow back in increasing enthalpy parts, namely occur QI invigorating to flow backwards.It addition, the existence mending gas carrying liquid also can make accumulation coolant in increasing enthalpy parts, and second vapor injection temperature can be caused relatively low.And owing to coolant density is more than lubricating oil density, therefore lubricating oil can float on the top of coolant, it is substantially at the top increasing enthalpy parts.And due in the increasing enthalpy parts of prior art, return port is generally in the lower position increasing enthalpy parts, this makes to be back to the fluid overwhelming majority of compressor gas supplementing opening by return port under this operating mode is coolant, float on the lubricating oil of top to be then difficult to return to gas supplementing opening from increasing enthalpy parts in time, thus can gradually area in increasing in enthalpy parts.This not only has influence on the result of use increasing enthalpy parts, also can the reliability of compressor be had a negative impact.
In short, under twin-tub pattern, multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor is similar to the QI invigorating principle of twin-tub two-stage enthalpy increasing frequency-changeable compressor, the return port effect now increasing enthalpy parts is only small；But under triplex pattern, flow backwards in QI invigorating and mend under the joint effect of gas carrying liquid, flowing back to the lubricating oil increased in enthalpy parts and be substantially at upper space, it is impossible to return to compressor gas supplementing opening by being positioned at the return port increasing enthalpy parts bottom, lubricating oil just amasss gradually in increasing in enthalpy parts.
On the basis of above-mentioned analysis, this utility model provides a kind of increasing enthalpy parts, and it is particularly suited for multi-cylinder two-stage enthalpy increasing transfiguration (preferred frequency conversion) compressor.
Specifically, as shown in Figure 3, increasing enthalpy parts of the present utility model include main casing assembly 1 and are placed in the straight tube 2 within described main casing assembly 1, the lower end of the lower end of described straight tube 2 and described main casing assembly 1 is tightly connected, and is formed and hold space (such as annular accommodation space) between remainder (stretching into main casing assembly 1 internal) and the inwall of described main casing assembly 1 of described straight tube 2.Wherein, the sidewall of described straight tube 2 is provided with return port 3, and described return port 3 arrives the distance distance more than described return port 3 to described main casing assembly 1 upper end of described main casing assembly 1 lower end.That is, relative to main casing assembly 1 generally speaking return port 3, is positioned at the position that middle part is above, that is, be positioned at the upper position increasing enthalpy parts.
As it is shown on figure 3, the height of main casing assembly 1 (or length) is L0, return port 3 is L3 to the distance of the lower end lower end of straight tube 2 (be also) of main casing assembly 1 simultaneously, then of the present utility model primarily the improvement is that, L3 > L0-L3.
By return port is arranged in increasing the upper position place of enthalpy parts, make these increasing enthalpy parts when for multi-cylinder two-stage enthalpy increasing transfiguration frequency-changeable compressor, under worst cold case, flow back to the lubricating oil (it floats on above coolant in described accommodation space) increased in enthalpy parts can be back to compressor gas supplementing opening in time, without being substantially coolant by what return port refluxed as the increasing enthalpy parts of prior art, cause increasing the long-pending oil condition of enthalpy parts thus can being prevented effectively under triplex pattern QI invigorating and flowing backwards, therefore the result of use increasing enthalpy parts can be improved, avoid the service life reduction of multi-cylinder two-stage enthalpy increasing positive displacement compressor.Simultaneously as decrease the amount of liquid refrigerants backflow, additionally aid minimizing or avoid liquid hit phenomenon.
Preferably, described return port 3 arrives the distance of described straight tube 2 upper end less than 1/10th of described straight tube 2 length.That is, return port 3 is generally within the top of straight tube 2.As it is shown on figure 3, the length of straight tube 2 is L1, return port 3 is L2 (=L1-L3) to the distance of straight tube 2 upper end, then, and and L1 > 10 × L2.
By return port 3 being arranged on the top of straight tube 2, except can guarantee that flowing back to the lubricating oil increased in enthalpy parts is back to gas supplementing opening by return port 3 in time, when in increasing enthalpy parts, coolant is more, the lubricating oil fully floated directly forms backflow also by the upper end mouth of pipe of straight tube 2, increases the chance of lubricating oil backflow further.
By contrast, in the increasing enthalpy parts of prior art, return port is positioned at the bottom increasing enthalpy parts, it is positioned at the hypomere (below middle part) of straight tube simultaneously, flow backwards in QI invigorating and mend under the combined effect of gas carrying liquid, increasing and the accommodation space of enthalpy parts will be accumulated coolant and lubricating oil, owing to return port position is on the lower side, the coolant that density is bigger always has an opportunity to be back to gas supplementing opening by return port, and the lubricating oil that density is less is then always in the top of return port.Further, since return port is relatively big to the distance of straight tube upper end, the liquid level of the liquid (coolant+lubricating oil) of accumulation also is difficult to reach straight tube upper end, thus is also impossible to the situation that lubricating oil passes through the mouth of pipe backflow of straight tube upper end occur.
On the other hand, the enthalpy parts that increase of prior art generally have the cross section of circle, that is, the cross section of its main casing assembly is circular, for instance concentric with straight tube, it is conceivable that increasing enthalpy parts of the present utility model can also adopt this structure.When being mounted to compressor, the main casing assembly 1 increasing enthalpy parts is also generally spaced a distance with compressor housing, and this distance is such as compensated by the outlet 5 of increasing enthalpy parts.It addition, under special operating mode, for instance under ultralow temperature heating condition, the temperature rise increasing enthalpy parts of prior art is difficult to meet requirement, also can affect the result of use increasing enthalpy parts.
For this, this utility model considers to utilize the temperature of compressor housing to come for increasing the heating of enthalpy parts, that is, realize increasing the rising of enthalpy part temperatures by making to carry out heat exchange between increasing enthalpy parts and compressor housing.Therefore, the shape increasing enthalpy parts is designed to compressor housing of can fitting by this utility model.
Preferably, the main casing assembly 1 of increasing enthalpy parts of the present utility model includes centrally located direct tube section and is positioned at tapered section (referring to the Fig. 3) at upper and lower two ends, and wherein, as shown in Figure 4, the sidewall of described direct tube section includes inner concave arc surface part 11.The remainder of the sidewall of direct tube section can be evagination cambered surface part 12 or such as prismatic surface part or their combination, it is preferable that outer convex globoidal part.Described inner concave arc surface part and this remainder collectively form the sidewall of described direct tube section.The inner concave arc surface part 11 of the sidewall of direct tube section can be such as inner cylinder face, and outer convex globoidal part 12 can be then external cylindrical surface.This inner concave arc surface part makes to increase enthalpy parts and can fit better with the outer surface (being generally external cylindrical surface) of compressor housing, particularly when the two radius is equal, therebetween large-area contact can be realized, thus ensureing the effect of heat exchange.
When specifically installing, increasing enthalpy parts are such as mounted to the top with compressor housing and fit.Owing to the temperature on compressor housing top is higher, even if thus under ultralow temperature heating condition, also can guarantee that increase enthalpy parts temperature rise meet requirement.On the other hand, compressor housing top is lowered the temperature due to temperature exchange, and this also helps the life-span increasing motor simultaneously, and can improve compressor performance.
Preferably, as shown in Figure 4, described straight tube 2 is coaxial with described outer convex globoidal part 12.This set makes the manufacture increasing enthalpy parts relatively easy.Certainly, straight tube 2 can not also be coaxially disposed with outer convex globoidal part 12, for instance can be arranged on inner concave arc surface part and the middle position of outer convex globoidal part.
Preferably, described return port 3 is towards described outer convex globoidal part 12 (not shown).Owing to the radial distance between straight tube 2 and outer convex globoidal part 12 is bigger, thus partial cross section is long-pending also bigger, correspondingly, the amount of the lubricating oil accumulated in the sector region between straight tube 2 and outer convex globoidal part 12 is also big, therefore, return port is made to be conducive to the backflow of lubricating oil towards outer convex globoidal part (namely being positioned at this sector region scope).
It is contemplated that mend the existence of gas carrying liquid, it is generally not desirable to the coolant in QI invigorating loop be directly sprayed onto in the outlet 5 increasing enthalpy parts under the effect of superfeed pressure and then arrive gas supplementing opening, in order to avoid causing compressor liquid hammer, and it is desirable to only gaseous coolant and enters in outlet 5.For this, this utility model is preferably set to: the axis increasing the upper port of the main casing assembly 1 of enthalpy parts is positioned at the scope in described accommodation space.Namely, by making the upper port (it substantially increases the entrance of enthalpy parts) of main casing assembly 1 towards described accommodation space (and not towards mouth of pipe of straight tube 2), enter the coolant increased in enthalpy parts and be first injected in this accommodation space, liquid coolant can reside in this accommodation space, gaseous coolant then enters in straight tube 2 under the effect of pressure reduction, and then enter in outlet 5, such that it is able to avoid coolant to be directly injected to straight tube 2 causes that liquid refrigerants is directly entered in outlet 5.
Alternatively or further, the upper port of described main casing assembly 1 is connected to inlet tube 4, for avoiding the coolant in QI invigorating loop be directly sprayed onto in the outlet 5 of increasing enthalpy parts under the effect of superfeed pressure and then arrive gas supplementing opening, it is internal that described main casing assembly 1 is stretched in the lower end that can also make described inlet tube 4, and the mouth of pipe of the lower end of described inlet tube 4 is towards described accommodation space.That is, the upper end mouth of pipe of the lower end mouth of pipe with straight tube 2 by making inlet tube 4 keeps dislocation (not relative to each other), it is possible to avoid liquid coolant to be directly entered in outlet 5.When adopting this set, no matter whether the axis of the upper port of main casing assembly 1 is towards the upper end mouth of pipe of straight tube 2, is all easily achieved.
Alternatively or preferably, for avoiding the coolant in QI invigorating loop be directly sprayed onto in the outlet 5 of increasing enthalpy parts under the effect of superfeed pressure and then arrive gas supplementing opening, following structure can also be adopted: as shown in Figure 5, described main casing assembly 1 be internally provided with diversion member 6, described diversion member 6 is positioned at the top of described straight tube 2, and described diversion member 6 has shield portions and flow passage component, wherein, described shield portions blocks the mouth of pipe of described straight tube upper end, and described flow passage component allows fluid from.Diversion member 6 such as can be achieved a fixed connection by the inwall of the connecting portion and main casing assembly 1 that are positioned at periphery, and is preferably tightly connected.That is, block effect by the shield portions of diversion member, it is possible to avoid coolant to be directly injected in straight tube 2 (and then arriving gas supplementing opening through outlet 5).
Preferably, the diversion member of a kind of preferred structure is as shown in Figure 6.Diversion member such as includes body 61 and connecting portion 62, and wherein, body 61 can be flat board, and the edge of described flat board is provided with through hole 63, and described through hole 63 constitutes described flow passage component.Correspondingly, the middle part of described flat board does not then have through hole, thus constitutes described shield portions.So, when the coolant in QI invigorating loop enters the main casing component internal increasing enthalpy parts, owing to the shield portions of diversion member 6 is positioned at above the upper end mouth of pipe of straight tube 2, so coolant can not be injected directly in straight tube 2, but spray to described accommodation space through each through hole 63, making liquid refrigerants reside in accommodation space, only gaseous coolant enters in straight tube 2.
Alternatively, the diversion member of another kind of preferred structure is as shown in Figure 7.Described diversion member also includes body 61 and connecting portion 62, and wherein, body 61 can be umbrella shape part, and the edge of described umbrella shape part is provided with through hole 63, and described through hole 63 constitutes described flow passage component.Correspondingly, the middle part (position raised up) of described umbrella shape part is not provided with through hole, thus constitutes described shield portions.The diversion member of this structure can prevent liquid refrigerants from entering in straight tube 2 equally.Additionally, when coolant enters main casing component internal, first spray to the apex of umbrella shape part, and then flow along the surface of umbrella shape part to surrounding, until entered the lower section of diversion member after arriving each through hole 63 place by each through hole, this can make coolant in the flowing increased in enthalpy parts evenly.
Based on the above-mentioned various improvement made to increasing enthalpy parts, another aspect of the present utility model additionally provides a kind of compressor, and it includes foregoing increasing enthalpy parts.
Preferably, compressor described in the utility model is multi-cylinder (such as triplex) twin-stage positive displacement compressor, it is preferable that multi-cylinder twin-stage transfiguration frequency-changeable compressor.Now, the advantage of increasing enthalpy parts of the present utility model can farthest be embodied.
Further preferably, when increasing the direct tube section sidewall of main casing assembly of enthalpy parts and including inner concave arc surface part and outer convex globoidal part, described inner concave arc surface part is consistent with the laminating of the outer surface (i.e. compressor housing) in described compressor body portion, as shown in Figure 8 and Figure 9.In figure, 10 for increasing enthalpy parts, and it is consistent with the housing in compressor body portion 11 (preferably with the top of housing) laminating; to carry out heat exchange with compressor body portion; ensure to increase the temperature increase requirement of enthalpy parts on the one hand, also compressor can be lowered the temperature on the other hand, in order to protection motor.It addition, in figure, 13 is liquor separator parts.
Multi-cylinder two-stage enthalpy increasing positive displacement compressor of the present utility model can avoid the increasing enthalpy parts long-pending oil situation owing to QI invigorating refluence causes when triplex MODE of operation, therefore the result of use increasing enthalpy parts or even complete machine it is remarkably improved, it is to avoid the service life reduction of multi-cylinder two-stage enthalpy increasing positive displacement compressor.It addition, its preferred structure also ensures that the temperature increase requirement increasing enthalpy parts, prevents or reduce liquid hammer situation, etc..
Those skilled in the art will readily understand, under the premise do not conflicted, above-mentioned measures can freely combine, superposition.
It is to be understood that, above-mentioned embodiment is merely illustrative of, and it is nonrestrictive, when not necessarily departing from ultimate principle of the present utility model, various obvious or equivalent amendment that those skilled in the art can make for above-mentioned details or replacement, be all included in right of the present utility model.
Claims (12)
1. one kind increases enthalpy parts, it includes main casing assembly and is placed in the straight tube of described main casing component internal, the lower end of the lower end of described straight tube and described main casing assembly is tightly connected, formed between remainder and the inwall of described main casing assembly of described straight tube and hold space, it is characterized in that, the sidewall of described straight tube is provided with return port, described return port to the distance of described main casing assembly lower end more than the described return port distance to described main casing assembly upper end.
2. increasing enthalpy parts according to claim 1, it is characterised in that described return port to the distance of described straight tube upper end less than 1/10th of described length of straight pipe.
3. increasing enthalpy parts according to claim 1, it is characterised in that described main casing assembly includes centrally located direct tube section and is positioned at tapered section of two ends, and wherein, the sidewall of described direct tube section includes inner concave arc surface part.
4. increasing enthalpy parts according to claim 3, it is characterised in that the sidewall of described direct tube section also includes outer convex globoidal part, and described inner concave arc surface part and described outer convex globoidal part collectively form the sidewall of described direct tube section.
5. increasing enthalpy parts according to claim 4, it is characterised in that described straight tube is coaxial with described outer convex globoidal part, and/or, described return port is towards described outer convex globoidal part.
6. according to the increasing enthalpy parts one of claim 1-5 Suo Shu, it is characterised in that the axis of the upper port of described main casing assembly is positioned at the scope in described accommodation space.
7. according to the increasing enthalpy parts one of claim 1-5 Suo Shu, it is characterized in that, the upper port of described main casing assembly is connected to inlet tube, and described main casing component internal is stretched in the lower end of described inlet tube, and the mouth of pipe of the lower end of described inlet tube is towards described accommodation space.
8. according to the increasing enthalpy parts one of claim 1-5 Suo Shu, it is characterized in that, described main casing assembly be internally provided with diversion member, described diversion member is positioned at the top of described straight tube, and described diversion member has shield portions and flow passage component, wherein, described shield portions blocks the mouth of pipe of described straight tube upper end, and described flow passage component allows fluid from.
9. increasing enthalpy parts according to claim 8, it is characterised in that the body of described diversion member is that flat board or umbrella shape part, described flat board or umbrella shape part are provided with the through hole as described flow passage component, and described through hole is arranged on described flat board or the edge of umbrella shape part.
10. a compressor, it is characterised in that it includes according to the increasing enthalpy parts one of claim 1-9 Suo Shu.
11. compressor according to claim 10, it is characterised in that described compressor is multi-cylinder twin-stage positive displacement compressor.
12. the compressor according to claim 10 or 11, it is characterized in that, described main casing assembly includes centrally located direct tube section and is positioned at tapered section of two ends, the sidewall of described direct tube section includes inner concave arc surface part and outer convex globoidal part, wherein, described inner concave arc surface part is consistent with the laminating of the outer surface in described compressor body portion.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508203A (en) * | 2016-01-19 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Enthalpy-increasing component and compressor provided with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105508203A (en) * | 2016-01-19 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Enthalpy-increasing component and compressor provided with same |
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