CN102667157A - Refrigeration compressor - Google Patents
Refrigeration compressor Download PDFInfo
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- CN102667157A CN102667157A CN2010800584065A CN201080058406A CN102667157A CN 102667157 A CN102667157 A CN 102667157A CN 2010800584065 A CN2010800584065 A CN 2010800584065A CN 201080058406 A CN201080058406 A CN 201080058406A CN 102667157 A CN102667157 A CN 102667157A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/048—Heat transfer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
A refrigeration compressor comprises a housing which surrounds the component parts of said compressor. A heat accumulating material (6), which can be arranged within or adjacent to the compressor housing, acts as a thermal capacitor being able to absorb heat while the compressor is on and to release heat while the compressor is off, so as to increase the thermal efficiency of the compressor. The heat accumulating material can be a phase change material (PCM).
Description
Technical field
The present invention relates to a kind of refrigeration compressor, and relate more specifically to a kind of compressor,, carry out its cooling through using from the characteristic of its hot transient state when said compressor application during in refrigeration system.
Background technique
The pressure that compressor has some fluid displacement increases to the function of carrying out the required pressure of refrigeration cycle.In refrigerating industry, use hermetic compressor usually, this hermetic compressor generally includes envelope sealed; Compressor part is installed in the shell of sealing: electric motor-compressor assembly; This electric motor-compressor assembly comprises cylinder block, and this cylinder block has by the end of cylinder head sealing, and this cylinder head limits discharges the chamber; This discharge chamber pressing chamber interior with being limited at cylinder is communicated with, and this pressing chamber is disposed in the valve plate sealing between cylinder end and the cylinder head.
In the operation period of compressor, the heat that the compression of gas produces finally adds the constituent elements of thermocompressor.
A performance that major issue is a refrigeration compressor of refrigerating industry.In fact,, various work and research have been carried out, those work and the research that particularly are intended to during sucking, to increase the amount of the gas that sucks and reduce to compress the required power of this gas in order to improve this performance.
These schemes need reduce the temperature of the compression locular wall that gas temperature (increasing its density) and reduction contact with gas during sucking.In this respect, should be appreciated that the development of the scheme of the temperature levels reduction that promotes compressor is directly worked to the raising of volume and electrical efficiency, the latter is result's (because the reduction of superheated loss and raising of compression process efficient) of thermomechanics part.
In these years, used various heat designs so that reduce the inside temperature level of compressor.
One in these designs is to isolate the discharge system, of the main inner heating source that this discharge system is a compressor.In U. S. Patent 3926009 and U. S. Patent 4371319, can see the scheme that relates to such approach, this U. S. Patent uses discharge to isolate (heat through enclosed space is isolated) through using the double-walled design.
Yet patent WO 2007/068072 utilizes the design of the heating source of isolating cylinder.According to this document, at interval catheter configurations is on valve plate and lead to the inner chamber of compressor case, and it is spaced apart and form annular supercharging around the conduit at the interval with valve plate to keep the compressor cylinder lid.This allow to reduce the heat transport from the cylinder head to the valve plate, and the heating that this finally reduces the cylinder block in the zone of pressing chamber improves the efficient of compressor.
The other type of internal heat mechanical property of control compressor is through comprising heat transfer element, its objective is to remove heat from the source that the thermal efficiency to compressor has a considerable influence and this heat is delivered to the zone away from it.In this design, be worth mentioning patent WO2007/014443, this patent proposes a kind of scheme that is used for improving the efficient of compressor, and this compressor uses heat pipe to come to remove heat from the heated part that contacts with cylinder.The hermetic compressor that said document proposition has the heat dissipation system, wherein the thermal energy transfer pipe is connected to cylinder block.This pipe has the thermal absorption end on the cylinder and discharges end with isolated another heat of cylinder block; Make the heat that produces through the compression of the freezing mixture in the cylinder be absorbed and be dissipated to zone, therefore reduce cylinder temperature and also improve compressor efficiency further from cylinder.
Another of temperature that is used for reducing compression cylinder possibly scheme be the use of optimization as the lubricant oil of the compressor of cooling way.The major function that in fact oil have is the lubricate compressors transmission device so that guarantee the reliability and the serviceability of its parts.Based on what oil is used for cylinder cooling purpose is U. S. Patent 4569639; Wherein the inventor has proposed in axle output, to use prolongation and on cylinder head, use baffle plate; Make the oil stream that comes out from the axle prolongation be introduced to cylinder head so cooling cylinder.This cylinder prolongation has the hole, and oil is flatly discharged towards the cylinder head baffle plate through this hole, makes this prolongation rotation simultaneously.Baffle plate also has the hole with the approximately uniform height of the height place that discharges oil, makes oil on cylinder head, flow and the cooling cylinder lid.
Through the description of the top existing technology that provides, can see, used different designs and scheme so that reduce the inside temperature of compressor, yet, should be noted that this scheme has developed into to concentrate on respectively on the compressor of regarding thermic devices as.
Summary of the invention
The present invention is intended to through using when compressor application cooling from the characteristic promotion compressor of the hot transient state of compressor during in refrigeration system.
Therefore, utilization of the present invention is present in the thermodynamic property between compressor and the compression system, realizes the reduction of inside temperature reliably and efficiently, and therefore improves the performance of compressor.
The present invention realizes above-mentioned target through hermetic compressor, and this hermetic compressor comprises the shell of the constituent elements that surrounds compressor, and the heat accumulation material occupies the inner volume of compressor case or occupies the volume of contiguous compressor case.The heat accumulation material serves as thermal capacitance, this thermal capacitance can when compressor operating, absorb a large amount of heat and when compressor is not worked released heat so that improve the thermal efficiency of compressor.
In an embodiment of the present invention, the heat accumulation material when compressor operating with first the amount hot released heat and when compressor is not worked with second the amount hot released heat.In this respect, the heat accumulation material can discharge the heat of minimum flow and when compressor is not worked, discharge a large amount of heat when compressor operating.
Still should be noted that the heat accumulation material can absorb heat when compressor operating and when compressor is not worked, some of this heat are discharged into parts in the parts of compressor.
The heat accumulation material can be latent heat accumulator or responsive heat accumulation device, yet the use of PCM (phase-change material) is particularly conducive to the inventive concept of proposition.
In this respect, should be noted that PCM is included in all material that begins to receive latent heat (that is, be in constant basically temperature and have the process of high thermal absorptivity) under certain design temperature for the present invention.In this respect, though the PCM material is restricted to the material that experience changes between liquid phase and solid phase usually, have minority PCM material, this minority PCM material does not change their phase, but changes the structure of their materials; These PCM are called solid-solid PCM.Therefore, mention phase transformation though run through text, the PCM term also is encompassed in the structure that changes them under certain design temperature, the material that absorbs high flux of heat.
The heat accumulation material can occupy the idle volume in the compressor, perhaps even can be at least one the part of structure of compressor part.
Description of drawings
Fig. 1-Fig. 1 illustrates first embodiment of refrigeration compressor of the present invention;
Fig. 2 and Fig. 3-Fig. 2 and Fig. 3 illustrate the The results of numerical simulation curve that heat that indication obtains through the embodiment shown in Fig. 2 removes;
Fig. 4-Fig. 4 illustrates second embodiment of refrigeration compressor of the present invention;
Fig. 5 a illustrates the 3rd embodiment of refrigeration compressor of the present invention to Fig. 5 c to Fig. 5 c-Fig. 5 a;
Fig. 6-Fig. 6 illustrates the 4th embodiment of refrigeration compressor of the present invention;
Fig. 7-Fig. 7 illustrates the 5th embodiment of refrigeration compressor of the present invention;
Fig. 8-Fig. 8 illustrates the 6th embodiment of refrigeration compressor of the present invention;
Fig. 9-Fig. 9 illustrates the 7th embodiment of refrigeration compressor of the present invention;
Figure 10-Figure 10 illustrates the 8th embodiment of refrigeration compressor of the present invention;
Figure 11 a illustrates the 9th embodiment of refrigeration compressor of the present invention to 11b to Figure 11 b-Figure 11 a; And
Figure 12-Figure 12 illustrates the tenth embodiment of refrigeration compressor of the present invention.
Embodiment
Below, will describe the present invention in detail with reference to the example shown in figure.Be used as example though describe the alternative compressor that will be used to freeze in detail, should be appreciated that principle of the present invention can be applied to the refrigeration compressor of any kind, size or layout.Therefore, the present invention can be applied to closed or semi-enclosed reciprocating compressor, rotary compressor or rolling compressor, maybe can receive the refrigeration compressor of any kind of the heat accumulation material of the certain volume that serves as fill container.
When its operation of compressor starts, in the near future various parts (such as, motor, compression cylinder and discharging area) begin to generate heat.When seeing that compressor is in thermal steady state, all energy dissipations that produced by the parts of heat are to other parts.Yet during the heating period (at this moment temperature does not still raise), the energy of many generations is not dissipated, but is absorbed by parts self, so that increases ability in it, and therefore improves its temperature.This ability of stored energy is directly related with the thermal capacitance of corresponding part during transition period.Supposing that parts have trends towards infinitely-great thermal capacitance, and then its temperature will be almost constant, owing to need increase this temperature by too many energy.In this optimal cases, parts will almost be worked under initial temperature, and this heat that will cause dissipating is zero, and other parts are not heated.
When going up the compressor of operation, thermal capacitance cuts little ice, because it only is used to change the heating time of parts at equilibrium temperature state (quite long non-stop run time) when observing.
Yet when observing compressor application in refrigeration system, because the dynamic characteristic of this system, compressor is worked discontinuously.Its experience circuit process, wherein in some cases, it maintains in the closed condition longer than maintaining in the open mode.Therefore, its operation period on refrigeration system, the temperature of the inner member of compressor is unsettled.
The present invention is based on the use that can absorb the element of heat at the compressor operation time durations from the parts of heat.The temperature of these parts of use diameter influences of these elements reduces, and improves the thermodynamic efficiency of compressor.In fact, the present invention discloses a kind of heat management mechanism that is used for compressor, and this heat management mechanism utilizes the thermal characteristics of its parts when on refrigeration system, so reduces the heating of compressor during its working hour.
Because, be necessary it is put in the situation that is applied to refrigeration system in order to use the design that the present invention proposes expeditiously.
Suppose that compressor has high heat content ability and works incessantly, then the temperature of these elements will continue to increase and will not realize that temperature reduces.Yet; The real work circulation time of the compressor in observing refrigeration system; The period that has the length that compressor cuts out; And in this period, can pass by energy loss that time enough makes that these high heat content elements absorb to compressor environment and from the compressor environment to the external environment condition.
Therefore, consider the real work circulation of the compressor in the refrigeration cycle, can see that closed circulation can realize, wherein the heat energy of high heat capacity element absorption occurred being released before in the new period of opening.
As the term " high heat capacity element " that here uses means heat absorbing element, and wherein many materials can be used for making this element.
Similarly; Though here use a technical term " element "; But the present invention is based on volume that uses the inside occupy compressor case or the heat accumulation material that occupies the volume of contiguous compressor case, and be not limited to be inserted into " self-contained element " in the inner space of compressor.
Be with using the relevant intrinsic advantage of heat of phase change absorber element, they during the thermal absorption process with constant basically temperature work (this promotes this absorption and also prevents these other parts of parts heating).In addition,, just can will be adjusted in optimum from the operating temperature of inner member, therefore realize higher control this scheme based on system dynamics in case be set (material that has the phase transition temperature of hope through selection) from the operating temperature of these parts.
Therefore, hope to use the thermal absorption material of under can be predefined constant temperature, working.
Needs that illustrate above considering and advantage in a preferred embodiment of the invention, are used the material (latent heat accumulator) of experience phase transformation during the thermal absorption process.These materials that are called PCM (phase-change material) comprise paraffin, special fat especially, and this can manufacture in different their phases of design temperature change.Yet, are solid-solids though should be appreciated that most of phase transformations, the structural change that also can under design temperature, absorb the material (solid-solid PCM) of big calorimetric also is included in the scope of the present invention.
Except can the Composition Control phase transition temperature through the material that uses, opposite with the responsive heat accumulation process that causes remarkable temperature variation, this process provides the high energy absorption capability with constant basically temperature.
Certainly,, also can use other high specific heat material (responsive heat accumulation device), because they also can absorb heat under their situation of slow increase of temperature though the preferred embodiments of the present invention are used PCM.An example according to the adaptable high specific heat material of advantage provided by the invention is a water.
Particularly, should be appreciated that and the present invention is based on that the heat accumulation material occupies internal capacity or near the conclusion of compressor case.Therefore; This material (no matter it is PCM or any other high heat capacity material) can be applied to any position in the compressor; Wherein, should confirm this position from effect, the free space that is used for locating these parts, the expense that relates to and the technological challenge for this purpose of the temperature of inner member according to reduction.
According to basic principle of the present invention, the heat accumulation material serves as thermal capacitance, when compressor operating, absorbs a large amount of heat and when compressor is not worked, discharges this heat.
The dynamic characteristic of this " thermal capacitance " can appear two kinds multi-form: it can absorb a large amount of heat; Released heat and be in off position released heat of following time at compressor subsequently as few as possible when compressor operating, perhaps it absorbs a large amount of heat during can be in working order and the heat that during work and down time, is consistent removes speed.In this latter's form, though when compressor operating, exist heat to discharge, the energy that produces removes during this identical period much higher, helps the reduction of thermal distribution.
The existence of one or another dynamic characteristic will be depended on hot input and output boundary conditions (convection coefficient and temperature potential), and will change according to design.
Fig. 1 illustrates the first embodiment of the present invention, and wherein the heat accumulation material is in being formed on the housing and the volume between the compressor cylinder lid that surrounds cylinder head.
This zone of cylinder head is crucial for compressor, and this is because all gases flows through the there.In order to get into cylinder, the zone of the absorbing silencer that suction gas process contacts with cylinder head.Come self-compressed high-temperature gas also to be discharged into lid, it flows to the remaining part of releasing system therefrom.Therefore; Through removing the gas heat on the cylinder head and therefore reducing its temperature; The heat dissipation that can see the low heating in the absorbing silencer output and spread all over the releasing system that cover downstream is reduced, and this is because the temperature potential reduction between the internal environment of gas self and compressor.In addition, cover in when cooling and more how to absorb heat, improve the thermodynamic efficiency of compressor from cylinder.
In Fig. 1, the part together with the compressor of the housing 1 of the lid 2 that surrounds cylinder 3 is shown.Produce volume 4 being formed on housing 1 and covering in the space between 2, the heat accumulation material be stored in this volume (as previously mentioned, this material can be grease, paraffin, another type PCM, or even have an another kind of material of high heat capacity).
Like what in Fig. 1, can see, housing 1 can also comprise outer fin 5.The selection of adding outer fin 5 results from system's thermodynamic property self: it is very strong that heat gets into this system, and this is owing to hit on the wall of corresponding lid with high speed from the gas of cylinder head, produces high heat transfer rate.Yet for the internal environment released heat from compressor, gas velocity is lower, and especially when compressor was not worked, at this moment, the gas in the internal environment was only through the natural convection campaign.In order during the time period of compressor operating, to discharge all heat that absorb, increase the external heat transfer area through adding fin 5 with high speed.Can randomly also can select dark-coloured japanning, so that improve heat transmission through radiation for housing 1 and fin 5.
Yet, should be noted that to comprise that fin 5 only is a preferred embodiment, and do not need, so that realize through adding the advantage that the heat accumulation material obtains in the volume that is formed between cylinder head 2 and the housing 1.
In an identical manner, this fin can be the internal fin that proximity thermal is gathered material, and this internal fin can promote the heat flow along its structure.Because some materials have low thermal conductivity, therefore, comprise that fin allows the heat flow of maximization along this material.In addition, also can use within the scope of the invention in order to maximize and other scheme that designs along the heat transmission of heat accumulation material, for example, the porous metal substrate that injects with the heat accumulation device.
In order to prove effect of the present invention; Use the design of the example embodiment shown in Fig. 1 to carry out numerical simulation, the heat of the cylinder head of this numerical simulation indication compressor removes potentiality (wherein the heat accumulation material is in being formed on the housing and the volume between the compressor cylinder lid that surrounds cylinder head).
Fig. 2 and 3 illustrates plotted curve, and this plotted curve illustrates the Simulation result (line A corresponding to the embodiment of the volume with heat accumulation material and line B corresponding to conventional compressor) in the drawings, of execution.
Fig. 2 illustrates plotted curve, and this plotted curve illustrates from cylinder head and is discharged into the heat the internal environment of compressor.More how heat though the lid that seems to have the heat accumulation material dissipates than conventional lid, should analyze the heat that the refrigerant gas in the cylinder head removes.Shown in Fig. 3 this analyze to show, when compressor is in the work (opening the period among the figure), the heat accumulation element is Duoed the about 3W of dissipation than conventional lid, yet during this identical period, this system is from the extra 8W that removes of this gas.Therefore, on population equilibrium, realize gas cooling, and therefore reduce the thermal distribution of compressor that this helps to improve energy efficiency.
Fig. 2 and 3 plotted curve can be explained according to the following analysis of systematic function: heat is from being in the gas entering heat accumulation material of high speed and high temperature.Yet, for the heat with identical amount is discharged to the internal environment of compressor, needing the more time, this is because it is discharged to and is in than low speed (low contracurrent system) and has in the gas of lower temperature gesture.Therefore; It need be in the time period in the work more than compressor and fill and efflux time so that close heat; And therefore; This process finishes with continuous discharge process, absorbs (should consider for the purposes of the present invention, should period) but during compressor is in the period in the work, have much better than hot gas.
Fig. 4 illustrates second example embodiment of the present invention.In this embodiment, the heat accumulation material is arranged in the discharge system of compressor.
Like what in Fig. 4, can see, in this embodiment, the case 6 of heat accumulation material is added in the discharge volume V in cylinder head 2 downstream.Therefore, concentric shell 7 is soldered to discharge tube, produces enclosed volume, and the heat accumulation material leaves in this enclosed volume.The major advantage that should be noted that this embodiment is its simple structure itself.
A benefit of the heat accumulation material being added on the discharge path on any other parts in cylinder head or downstream is; Depend on design optimization, when on compressor outlet, realizing significantly reduced gas temperature, compressor outlet must discharge less heat on the system condensing device; This relates to reduction condensing temperature (and pressure); And therefore, cycle efficiency will improve generally, and this is because the difference between the temperature of the source (condenser) of heating and low-temperature receiver (vaporizer) reduces.
About the content shown in first embodiment, this embodiment shown in Fig. 4 can comprise fin 5 above being similar to, and concentric shell 7 is preferably externally arranged and be connected to this fin.The existence of these fins increases external area, and therefore, when compressor is not worked, helps to remove heat.
Like what mention, can internal fin be set so that maximize heat transmission along heat accumulation device base material about the first embodiment of the present invention.
Fig. 5 a, 5b and 5c illustrate the third embodiment of the present invention, and wherein the heat accumulation material externally is used for the zone of compressor crankcase 8.
Shown in Fig. 5 a, in this embodiment, the phase-change material 6 of certain volume with volume that the internal environment of compressor separates in be arranged on the bottom of compressor.This volume can be the form of storage 9, and this storage will can guarantee that maybe bubble-tight other form of target area is closed through welding, gummed, so that guarantee the sealing between inner compressor volume and the heat accumulation device volume.
To shown in the 5b, this storage 9 can comprise metal fin 10 in the zone of heat accumulation device volume like Fig. 5 a, so that therefore the heat transmission promoting from the heat accumulation material to external environment condition maximizes the efficient that hot type goes out process.
Embodiment shown in Fig. 5 a-5c has two important advantages: in case oil is cooled; Because it is in lower temperature; Oil removes heat along other parts of compressor through out-of-date other parts from compressor at it, causes that these parts are cooled (comprising cylinder zone and filter by suction).If compressor has cylinder and cylinder head is positioned at the structure on the oily zone of vicinity, then more strengthen by the effect that such accumulator is included in this region generating, this is because the cooling of oil and adjacent area more effectively reaches compression cylinder.
In addition, the operation period of the compressor in cooling system, compressor part (oil in this case) can experience significantly different state of temperature.Go up (critical situation) in the test of leaving behind (pull down test), oil is very hot, and in the power consumption test, it is much cold.Therefore, oil viscosity is different greatly between two states, and this influences whole support design and does not allow these parts accurately to be optimized.Allow them to be conditioned so that hotlyyer under the condition of high temperature, remove the comprising of heat of phase change accumulator that is in uniform temperature; And therefore key state (such as; Leave behind) reduce oil temperature down, therefore make closer proximity to each other from the temperature of leaving behind with the power consumption operator scheme.Therefore, oil viscosity in the application changes and reduces, and allows the support design more optimized, and this causes the energy efficiency of compressor to improve.
The 4th illustrative example of the present invention relates to adds the heat accumulation material in the zone on the exterior section of compressor case to, and said zone produces with the compressor substrate relatedly.
This embodiment shown in Fig. 6 comprises provides case 11, and this case and the substrate 12 of compressor are formed on the part of the exterior section in contiguous compressor crankcase zone 8 relatedly.
Therefore, the body of case 11 uses the part of substrate 12, therefore is convenient to assembling process.
Be similar to situation about discussing about other embodiment, the outer wall of case 11 can be provided with fin 13, so that promote heat to transmit and maximize the efficient of the process that dissipates the heat into external environment condition.
The 5th illustrative example of the present invention comprises adds the heat accumulation material in the case 14 in the zone that is formed on compressor crankcase 8 to, and wherein case 14 is inner at compressor.
This embodiment shown in Fig. 7 comprises partly that the inwall of shell and the case that is limited on other wall 15 the case 14 that wherein limits like this is arranged in the zone that is immersed in compressor oil.
Be similar to situation about discussing about other embodiment, the wall of case 14 can be provided with fin 16, so that promote heat to transmit and maximize the efficient of this process.
About shown in the 3rd illustrative example of the present invention, according to this application aims, the oil that the heat accumulation device is used for crankcase area can produce two significant advantage like the front:
Through during current compressor operation, promoting the cooling of oil, the heat accumulation material improves the heat that it removes from each parts, allows the temperature levels of compressor to reduce and therefore improve energy and volumetric efficiency.
Through promoting to concentrate on the cooling of the oil on the key application state, can reduce temperature difference from key state to the nominal application state, therefore promote the optimization and the design (reducing) of equipment because viscosity changes.
The heat accumulation device is arranged on the advantage that has on the crankcase area; Rely on the whole base regions of shell; This whole base regions is with the heat dissipation element of substrate as the heat of storing at the compressor operation time durations, and this makes that the discharge process of this thermal capacitance is easier to realize.
In this respect, (particularly, the setting of phase-change material-PCM) is highly favourable to the latent heat accumulator in this case, and this is because it not only can be used for reducing suction chamber and cylinder temperature, and can be used for control and regulate oil temperature.Through this Application Design is become to concentrate on the crankcase area of compressor; Become can be in storage on the preset temperature range from the heat energy of oil so that prevent the superheating (through the PCM thermal absorption) under extreme case, so make the levels of viscosity of this application more near those levels of viscosity of extreme case.
This result directly influences the minimizing (satisfying the requirement of key in application and nominal condition simultaneously) of design constraints, and therefore promotion has the development of the new mechanism of higher-energy efficient.
In this respect, should be noted that the embodiments of the invention shown in Fig. 5 and 6 (wherein heat accumulation material arrangements is on the zone of contiguous crankcase) show being similar to above those the advantage with reference to embodiment's description of figure 7.
Fig. 8 illustrates the 6th illustrative example of the present invention, and wherein the heat accumulation material is added to absorbing silencer.
Like what can see from this figure, in this embodiment, the case with heat accumulation material 18 is arranged on the suction pipe 19 of filter by suction 20 of compressor.
Therefore, the heat accumulation material passes the cooling that pipe is used for gas 19 time when it, is reduced in its temperature on the cylinder inlet, and therefore improves energy and volumetric efficiency.
Wherein the heat accumulation material is latent heat accumulator (PCM), and phase transition temperature should be lower than the gas temperature of the location of pipe, helps the temperature potential that heat removes so that produce.
Should be noted that the heat accumulation material can be responsive heat accumulation device (for example, water or oil), wherein, in this case, it must be considered the temperature variation in the absorption process neutralization heat dissipative process through the heat accumulation base material by design carefully.Preferably; Consider system performance; The heat accumulation device is arranged on the absorbing silencer: the main cause that energy efficiency is low in the compressor is the gas superheating during sucking, and based on the unnecessary heating along the gas in path from the suction pipe to the compression cylinder.Observe significant efficiency gain through changing the metal filter by suction into the plastics filter by suction in the past.Now, each compressor that almost is applied to the family expenses refrigeration uses plastic filter, yet the temperature of the gas of cylinder ingress is about 20 to 30 ℃, and this is higher than the temperature at place, suction port of compressor.
Therefore, in the sixth embodiment of the present invention, the heat accumulation material passes the cooling that pipe is used for gas 19 time when it, is reduced in its temperature on the cylinder inlet, and therefore improves energy and volumetric efficiency.
Wherein use latent heat accumulator (PCM), phase transition temperature should be lower than the gas temperature of the location of pipe, helps the temperature potential that heat removes so that produce.Can select responsive heat accumulation device (for example, water or oil), yet this design should be by careful plan, so that when compressor is not worked, guarantee the hot driving of heat accumulation device.
Being similar to about the described situation of other embodiments of the invention, only is illustrative example like the fin of seeing in the drawings, and whether they should be set up and depend on the Application Design that is used for the heat accumulation device.The setting of this fin is intended to improve from the gas heat in the zone of managing the heat accumulation device and removes (through increasing its area).
The hybrid plan that is used for the material of filter by suction and heat accumulation device can be designed so that maximize the performance that heat removes.For example, can think, the use of the suction cover (for said design, this suction cover comprises suction pipe) of metallic material (for example, steel or aluminium) allow gas to PCM than low thermal resistance.
Fig. 9 illustrates the 7th illustrative example of the present invention, and wherein heat accumulation material arrangements is in the zone of compressor cylinder 3.
In this embodiment, the maintenance passage 23 that is used for heat accumulation material 24 forms along cylinder.Shown in figure, passage 23 can be by the Sealing sealing of cylinder head 22 self.Yet this passage can alternatively be closed through welding, gummed or any other appropriate means.
Wherein the heat accumulation material is latent heat accumulator (PCM), can control this properties of materials and make it be used for heat at compressor operation time durations clocklike to remove, therefore reduce the temperature of cylinder, and therefore reduce the temperature of gas wherein.This reduction directly influences the raising of the energy efficiency of compressor.For example: if under 90 ℃ temperature, work in the cylinder nominal, this material can be designed such that it will make new cylinder temperature be lower than 90 ℃ 60 ℃ of covert and raising heat transmission, therefore cause thermodynamic efficiency to improve.
Another of this zone of cylinder possibly used and add that phase transition temperature is higher than the continuous running temperature but the material that is lower than the temperature in the key operation period with being, so that heat accumulation device proper handling is adjusted to extreme working state, such as the high thermal stress state.This will advantageously give the product steadiness, and this is owing in these states, work with colder temperature through the cylinder 3, piston 21 and the oil that allow this location, improves lubricated and supporting process.In addition, can raise the efficiency indirectly, this is because through under extremity, having than high-stability; Can relax some design standards and (for example, reduce oil viscosity, because at high temperature; PCM guarantees suitable viscosity), allow under normal operating conditions, to improve compressor operation.
Be similar to above-described other embodiment, the existence of fin is optional and depends on the design of being concerned about.Among the said embodiment who illustrates in the drawings; Fin 25 is provided for promoting hot driving through the exchange area that increases heat accumulation base material (this heat accumulation base material can be latent heat accumulator PCM or responsive heat accumulation device), because hot packing ratio is in that side stronger (because the height convection current in the cylinder) of the internal environment of compressor.
Figure 10 illustrates the 8th illustrative example of the present invention, and wherein the heat accumulation material is included in the case or cylinder sleeve 27 of electric motor of compressor (seeing Figure 10, wherein reference character 26 indication rotors and reference character 26 indication stators).
In the illustrated embodiment, this cylinder sleeve 27 is interference fit in the perimeter of stator 26, so that the thermal resistance that modules of said type is intrinsic is reduced to minimum.
Therefore, when electric motor heats, and during certain operating temperature of appointment in the application that reaches the heat accumulation device, the heat accumulation device will absorb the heat that electric motor dissipates, and electric motor is worked under than the lower temperature of the situation that does not have the heat accumulation device.
Except the cooling of electric motor self, the existence of heat accumulation device prevents to be dissipated to thermal runaway in these parts to the internal environment of compressor, causes the reduction of cavity temperature, and causes indirectly because the reducing of the superheated energy loss of gas.
Another advantage of this scheme is the reliability of the compressor (for example, having the compressor of low-yield efficient) that can guarantee to be operated in the key temperatures state, therefore reduces steel and reduces the use (low-cost compressor) of copper especially.
Among the embodiment who illustrates in the drawings, do not comprise the dissipation fin; Yet, in inventive concept of the present invention, can add this fin.
Figure 11 a and 11b illustrate the 9th illustrative example of the present invention, and wherein the heat accumulation material is applied to suction pipe 28, discharge tube 29 or arrives and sucks and discharge tube 28,29 (pipe).
The heat accumulation device is applied to suction pipe and produces at least two advantages.First advantage relates to the still superheating of the suction gas before getting into compressor (because this pipe is in the shell heating of higher temperature).When passing pipe, this being flowing on the suction gas of heat found lower drag, and this suction gas shows the thermal transmission coefficient more much higher than outer side, because outer side is characterized as being natural convection usually.Add the heat accumulation material in the case 30 around the suction pipe 28 intention produce preferred path so that flowing from the heat of shell (be different from and suck gas).Therefore, the interpolation of fin 31 can increase exchange area for the heat accumulation device.
Another advantage of this application is to produce the obstacle from the heat of discharge tube 29, and this discharge tube is much warmmer than suction pipe 28 and shell self.In some compressors, because designing requirement, suction pipe 28 is close to (for example, seeing the exemplary embodiments that illustrates) each other with discharge tube 29 very much.Therefore, owing between suction gas and discharge gas, have high temperature gradient, should expect to have hot short circuit.Yet the existence of this heat accumulation element also is used for working from the preferred path of the heat of these parts through generation.
When this heat accumulation device 32 is applied to discharge tube 29, hope to reach this identical effect, form to be different from and transport the path that is used for preferred heat of the path of this heat energy towards sucking the zone.In an identical manner, the existence of fin 33 is played and is promoted that this heat is delivered to the effect in the heat accumulation base material.
It is that the temperature of discharging gas reduces that heat accumulation device 32 is applied to discharge tube 29 another intrinsic advantages, and this is owing to the heat dissipation that is used for this accumulator is enhanced.Because discharge temperature reduces, possibly there is indirect efficiency gain (owing on condenser, exchanging the needs that reduce of this heat).Because this of heat that will on condenser, be exchanged reduces, it can have the size (cost reduction) that reduces, and perhaps when keeping the size of condenser, pressure wherein and saturation temperature reduce, and have improved the efficient of [thermodynamic.
As other possibility embodiment, the case that is used for the heat accumulation device can be processed by metal and/or plastics, and wherein when it was made of metal, metal can be soldered to outer shell-and-tube.Under the situation of plastics, gummed will be the first feasible selection.
Figure 12 illustrates the tenth illustrative example of the present invention, and wherein the heat accumulation material is applied to the top 35 of compressor case.
This in the illustrated embodiment, the plate 36 that is preferably metal is placed on compressor and covers, said parts are connected through any appropriate means (for example, welding or gummed), guarantee to be used for to hold the formation of the sealing case of heat accumulation material 37.
Owing to be applied on this zone, realize the temperature levels lower than nominal shell, environment absorbs more heat internally, reduces inside temperature, and therefore is reduced in during the suction process because the superheated loss of gas.
Like what mention about the embodiment shown in other, plate 36 can comprise the fin 38 that is intended to increase area of heat transfer.
Combine the description shown in the accompanying drawing only to relate to be used for the possible embodiment of refrigeration compressor of the present invention above should be appreciated that, and its actual range is liked and is limited in the claim enclosed.
Therefore in this respect, should be appreciated that inventive concept of the present invention is to utilize the thermodynamic property that is present between compressor and the refrigeration system,, and improve the performance of compressor so that realize the reduction of inner compressor temperature reliably and expeditiously.
This inventive concept is implemented through refrigeration compressor, and this refrigeration compressor comprises the heat accumulation material that serves as thermal capacitance, so that improve the thermal efficiency of compressor.
Though the heat accumulation material that can use any other kind within the scope of the invention (for example; Latent heat accumulator or responsive heat accumulation device); But top description clearly illustrates that through the latent heat accumulator is used as phase-change material (PCM), the present invention is efficient especially.
The layout of heat accumulation material and depend on compressor design to the means of the application of compressor structure, and the embodiment shown in describe in detail only be possible embodiment example.
In this respect; Accompanying drawing illustrates several embodiments; Wherein ((this free time volume is in for the specially designed case of that purpose, perhaps in the space that is formed between the parts of compressor preferably, PCM) to be applied to the interior idle volume of compressor case for the heat accumulation material; Perhaps even in the enclosed space in being formed on the parts of compressor), the perhaps volume of contiguous compressor case externally.Yet, should be noted that to the invention is not restricted to the embodiments described herein.
For example, the present invention is not to use the volume that produces between two plates, but for example can use the elastic material (rubber sheet) that wherein has PCM, and wherein said material can be connected to compressor case through glue or other adhesive means.This variant will allow the PCM material to change in time.
In addition, the heat accumulation material (preferably, PCM) can for example directly be used for one manufacturing of compressor part or even be used for compressor case.
In a similar fashion, the fin that is provided by said embodiment can be outside (shown in figure) or inner, and proximity thermal is gathered material, so that promote flowing along the heat of its structure.As running through that text mentions, the interpolation of fin allows maximization flowing along the heat of this material.In this respect, should be noted that also can use within the scope of the invention to be used for maximizing other scheme of transmitting along the heat of heat accumulation material, for example, the porous metal substrate that is injected into the heat accumulation device.
Though the present invention can use the heat accumulation material of any kind; But the following example of operable within the scope of the invention PCM material is listed in order to inform purpose: can be from the model RT52 and the RT65 of Rubitherm Technologies GmbH acquisition; Model Plus Ice-S58 and S72 (based on the PCM scheme of hydrated salt) and model Plus Ice A55, A62 and the A70 (organic base PCM scheme) that can obtain from Change Material Products Limited and the model C limsel C58 and the Climsel C70 that can obtain from Climator Sweden AB.
Claims (25)
1. refrigeration compressor; Said refrigeration compressor comprises the shell of the constituent elements that surrounds said compressor; It is characterized in that; Said refrigeration compressor comprises the heat accumulation material that serves as thermal capacitance, said heat accumulation material can when said compressor operating, absorb big calorimetric and when said compressor is not worked released heat so that improve the thermal efficiency of said compressor.
2. compressor according to claim 1 is characterized in that, said heat accumulation material discharges the heat of first amount and when said compressor is not worked, discharges the heat of second amount when said compressor operating.
3. compressor according to claim 2 is characterized in that, said heat accumulation material discharges the heat of minimum flow and when said compressor is not worked, discharges a large amount of heat when said compressor operating.
4. according to each the described compressor in the claim 1,2 or 3; It is characterized in that said heat accumulation material absorbs heat and when said compressor is not worked, the part of this heat is discharged into a constituent elements in the constituent elements of said compressor when said compressor operating.
5. according to each the described compressor in the claim 1 to 4, it is characterized in that said heat accumulation material is the latent heat accumulator.
6. according to each the described compressor in the claim 1 to 4, it is characterized in that said heat accumulation material is responsive heat accumulation device.
7. according to each the described compressor in the claim 1 to 6, it is characterized in that said heat accumulation material occupies the inside (4,7 of said compressor case; 15,18,23,27) volume or occupy contiguous (9; 11,30,32,37) volume of said compressor case.
8. compressor according to claim 7 is characterized in that, said heat accumulation material occupies the idle volume in the inside of said compressor.
9. compressor according to claim 7 is characterized in that, the part of the structure of at least one constituent elements in the constituent elements that said heat accumulation material is said compressor.
10. compressor according to claim 8 is characterized in that, in the volume (4) of said heat accumulation material arrangements between the lid (2) of housing (1) that is formed on the lid (1) that surrounds compressor cylinder (3) and said compressor cylinder (3).
11. compressor according to claim 8 is characterized in that, said heat accumulation material occupies by the enclosed volume (6) that forms with the substantially concentric housing (7) of compressor discharge tube.
12. compressor according to claim 7 is characterized in that, said heat accumulation material arrangements is in the storage (9) of the bottom of contiguous said compressor.
13. compressor according to claim 7; It is characterized in that; Said heat accumulation material arrangements with case (11) that the substrate (12) of said compressor forms relatedly in, said case (11) is outside and formed by the part of said substrate (12) at least in part at said compressor.
14. compressor according to claim 8; It is characterized in that; In the case (14) of said heat accumulation material arrangements in the inner region that is formed on compressor crankcase (8), wherein said case (14) is limited between the inwall of said compressor case and the other wall (15).
15. compressor according to claim 8 is characterized in that, said heat accumulation material arrangements is in case (18), and said case (18) is disposed in the suction pipe (10) of filter by suction (20) of said compressor.
16. compressor according to claim 8 is characterized in that, said heat accumulation material arrangements is in cylinder sleeve (27), and said cylinder sleeve is formed in the electric motor of said compressor.
17. compressor according to claim 7 is characterized in that, said heat accumulation material arrangements is in the sealing case (37) that is formed by compressor roof and other plate (36).
18. compressor according to claim 9 is characterized in that, said heat accumulation material arrangements is in the maintenance passage (23) that the cylinder along said compressor forms.
19. the compressor according to claim 9 is characterized in that, said heat accumulation material is applied to the suction pipe (28) of said compressor.
20. each the described compressor according in claim 9 or 19 is characterized in that, said heat accumulation material is applied to the discharge tube (29) of said compressor.
21. each the described compressor according in the claim 1 to 20 is characterized in that said heat accumulation material has internal fin, so that make along the mobile maximization of the heat of said material.
22. each the described compressor according in the claim 1 to 20 is characterized in that the zone that surrounds said heat accumulation material has outer fin, so that make the transmission maximization by the heat of perimeter.
23. a refrigeration compressor, said refrigeration compressor comprises the shell of the constituent elements that surrounds said compressor, it is characterized in that, comprises phase-change material (PCM); Said phase-change material occupies the inside (4,7,15,18 of said compressor case; 23,27) volume or occupy contiguous (9,11; 30,32,37) volume of said compressor case; Said phase-change material (PCM) serves as thermal capacitance, said thermal capacitance can when said compressor operating, absorb big calorimetric and when said compressor is not worked released heat so that improve the thermal efficiency of said compressor.
24. compressor according to claim 23 is characterized in that, said phase-change material (PCM) occupies the idle volume in the inside of said compressor.
25. each the described compressor according in claim 23 or 24 is characterized in that, said phase-change material (PCM) is the part of the structure of at least one constituent elements in the constituent elements of said compressor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0904785-9A BRPI0904785A2 (en) | 2009-11-10 | 2009-11-10 | refrigeration compressor |
| BRPI0904785-9 | 2009-11-10 | ||
| PCT/BR2010/000373 WO2011057373A1 (en) | 2009-11-10 | 2010-11-09 | Refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102667157A true CN102667157A (en) | 2012-09-12 |
Family
ID=43734115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800584065A Pending CN102667157A (en) | 2009-11-10 | 2010-11-09 | Refrigeration compressor |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130045119A1 (en) |
| EP (1) | EP2500567A1 (en) |
| KR (1) | KR20120103605A (en) |
| CN (1) | CN102667157A (en) |
| BR (1) | BRPI0904785A2 (en) |
| WO (1) | WO2011057373A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104884803A (en) * | 2012-12-27 | 2015-09-02 | 松下知识产权经营株式会社 | Hermetic compressor and refrigeration device with same |
| CN106164607A (en) * | 2014-03-24 | 2016-11-23 | 可口可乐公司 | There is the refrigerating system of phase change material heat exchanger |
| CN109185099A (en) * | 2018-11-09 | 2019-01-11 | 广西玉柴机器股份有限公司 | Full water cooling air compressor |
| CN110887288A (en) * | 2018-09-11 | 2020-03-17 | Lg电子株式会社 | Small compressor and refrigerator with same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120232936A1 (en) * | 2011-03-11 | 2012-09-13 | Castlight Health, Inc. | Reference Pricing of Health Care Deliverables |
| CN107636404B (en) * | 2015-07-03 | 2020-03-27 | 三菱电机株式会社 | Heat pump device |
| KR20170011237A (en) * | 2015-07-22 | 2017-02-02 | 한국항공우주연구원 | Apparatus and method for controlling temperature of cryopump |
| CN108895721B (en) * | 2018-07-26 | 2024-06-11 | 青岛海尔空调器有限总公司 | Compressor for T3 working condition and air conditioner including the compressor |
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- 2010-11-09 EP EP10803207A patent/EP2500567A1/en not_active Withdrawn
- 2010-11-09 US US13/509,266 patent/US20130045119A1/en not_active Abandoned
- 2010-11-09 CN CN2010800584065A patent/CN102667157A/en active Pending
- 2010-11-09 WO PCT/BR2010/000373 patent/WO2011057373A1/en active Application Filing
- 2010-11-09 KR KR1020127014120A patent/KR20120103605A/en not_active Withdrawn
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| US3926009A (en) * | 1975-01-27 | 1975-12-16 | Lennox Ind Inc | Hermetic compressor with insulated discharge tube |
| US4371319A (en) * | 1979-07-13 | 1983-02-01 | Hitachi, Ltd. | Hermetic motor compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104884803A (en) * | 2012-12-27 | 2015-09-02 | 松下知识产权经营株式会社 | Hermetic compressor and refrigeration device with same |
| CN106164607A (en) * | 2014-03-24 | 2016-11-23 | 可口可乐公司 | There is the refrigerating system of phase change material heat exchanger |
| CN110887288A (en) * | 2018-09-11 | 2020-03-17 | Lg电子株式会社 | Small compressor and refrigerator with same |
| US11143438B2 (en) | 2018-09-11 | 2021-10-12 | Lg Electronics Inc. | Compressor and refrigerator having the same |
| CN109185099A (en) * | 2018-11-09 | 2019-01-11 | 广西玉柴机器股份有限公司 | Full water cooling air compressor |
| CN109185099B (en) * | 2018-11-09 | 2024-04-19 | 广西玉柴机器股份有限公司 | Full water-cooling air compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120103605A (en) | 2012-09-19 |
| BRPI0904785A2 (en) | 2013-07-30 |
| EP2500567A1 (en) | 2012-09-19 |
| US20130045119A1 (en) | 2013-02-21 |
| WO2011057373A1 (en) | 2011-05-19 |
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Application publication date: 20120912 |