CN104728089A - Three-stage compressor and refrigeration equipment with same - Google Patents
Three-stage compressor and refrigeration equipment with same Download PDFInfo
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- CN104728089A CN104728089A CN201510136943.1A CN201510136943A CN104728089A CN 104728089 A CN104728089 A CN 104728089A CN 201510136943 A CN201510136943 A CN 201510136943A CN 104728089 A CN104728089 A CN 104728089A
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Abstract
The invention discloses a three-stage compressor and refrigeration equipment with the same. The three-stage compressor comprises a shell, a compression mechanism, a first partition plate, a second partition plate and a bent shaft. The compression mechanism comprises a first-stage compression component, a second-stage compression component and a third-stage compression component. The first-stage compression component, the second-stage compression component and the third-stage compression component include at least one rotating compression component and at least one centrifugal compression component. The first partition plate is arranged between the first-stage compression component and the second-stage compression component. The second partition plate is arranged between the second-stage compression component and the third-stage compression component. The bent shaft comprises a body portion and at least one offset shaft portion formed on the body portion. The offset shaft portion is sleeved with a roller. The body portion is sleeved with an impeller. The three-stage compressor is high in efficiency and good in performance.
Description
Technical field
The present invention relates to compressor field, especially relate to a kind of three stage compressor and the chiller plant with this three stage compressor.
Background technique
One-level in three stage compressor in correlation technique, secondary and three stage compression parts are rotary compression structure, the feature of the exhaust of rotary compression structure is only exhausted in the scope of 180 ° that roller rotates, exhaust has intermittence, has so just had a strong impact on the efficiency of three stage compressor.Although alleviate the problem of exhaust interval in prior art by arranging middle chamber (middle pressure chamber), such structure air intake passage is long, and refrigerant gas is easily subject to the heating of pump body hot environment, affects refrigerating/heating poor performance.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention needs to propose a kind of three stage compressor, and the efficiency of this three stage compressor is high, performance good.
The present invention also needs to propose a kind of chiller plant with this three stage compressor.
The three stage compressor of embodiment according to a first aspect of the present invention, comprising: housing, compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises: one stage of compression parts, two-stage compression parts and three stage compression parts, wherein said one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise at least one rotary compression parts and at least one centrifugal compressed parts, wherein said rotary compression parts comprise rotary cylinder, be located at roller in described cylinder and reciprocable and the slide plate be only against on described roller, the impeller that described centrifugal compressed parts comprise centrifugal type gas cylinder and are rotatably located in described centrifugal type gas cylinder, first dividing plate, described first dividing plate is located between described one stage of compression parts and described two-stage compression parts, and described first dividing plate is provided with the first gas channel of the intakeport of air outlet for being communicated with described one stage of compression parts and described two-stage compression parts, second partition, described second partition is located between described two-stage compression parts and described three stage compression parts, and described second partition is provided with the second gas channel of the intakeport of air outlet for being communicated with described two-stage compression parts and described three stage compression parts, bent axle, described bent axle comprises main part and is formed at least one the off-axis portion on described main part, and described roller sleeve is located in described off-axis portion, and described impeller set is located on described main part.
According to the three stage compressor of the embodiment of the present invention, by rotary compression parts and centrifugal compressed parts are combined as a whole, thus the advantage of centrifugal compressed parts can be utilized to promote the efficiency of three stage compressor, namely the exhaust of centrifugal compressed parts continuously, uninterruptedly, and exhaust temperature rise is little, thus each compression member that can overcome in prior art in three stage compressor is the shortcoming of rotary compression parts, and then efficiency and the refrigerating/heating performance of three stage compressor can be promoted.
In addition, for three stage compressor of the prior art, the bent axle of the three stage compressor in the embodiment of the present invention arranges two off-axis portions at the most, greatly can reduce assembling difficulty like this.
In addition, also following additional technical feature can be had according to three stage compressor of the present invention:
According to one embodiment of present invention, described one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise described centrifugal compressed parts and two described rotary compression parts.
According to one embodiment of present invention, described two-stage compression parts are positioned at the top of described one stage of compression parts, described three stage compression parts are positioned at the top of described two-stage compression parts, further: described one stage of compression parts are configured to described centrifugal compressed parts and described one stage of compression parts comprise one-level cylinder and are located at the one stage impeller in described one-level cylinder; Described two-stage compression parts are configured to described rotary compression parts and described two-stage compression parts comprise secondary cylinder, are located at secondary roller in described secondary cylinder and reciprocable and the secondary slide plate be only against in described secondary roller; Described three stage compression parts are configured to described rotary compression parts and described three stage compression parts comprise three-stage cylinder, are located at three grades of rollers in described three-stage cylinder and reciprocable and the three grades of slide plates be only against in described three grades of rollers.
According to one embodiment of present invention, described one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise two described centrifugal compressed parts and described rotary compression parts.
According to one embodiment of present invention, described two-stage compression parts are positioned at the top of described one stage of compression parts, described three stage compression parts are positioned at the top of described two-stage compression parts, further: described one stage of compression parts are configured to described centrifugal compressed parts and described one stage of compression parts comprise one-level cylinder and are located at the one stage impeller in described one-level cylinder; Described two-stage compression parts are configured to described rotary compression parts and described two-stage compression parts comprise secondary cylinder, are located at secondary roller in described secondary cylinder and reciprocable and the secondary slide plate be only against in described secondary roller; Described three stage compression parts are configured to described centrifugal compressed parts and described three stage compression parts comprise three-stage cylinder and are located at three grades of impellers in described three-stage cylinder.
According to one embodiment of present invention, the lumenal cross-section of described one-level cylinder reduces from bottom to top gradually, and the physical dimension of the lower end of described one stage impeller is greater than the physical dimension of the upper end of described one stage impeller.
According to one embodiment of present invention, the lower end surface of described first dividing plate is provided with the diffusion groove with the inner space of described one-level cylinder, and the first gas channel on described first dividing plate is for being communicated with the intakeport of described diffusion groove and described two-stage compression parts.
According to one embodiment of present invention, described diffusion groove is annular, and the cross-sectional dimension of described diffusion groove increases on the direction of described first gas channel gradually at the intakeport from described one stage of compression parts.
According to one embodiment of present invention, described second partition, comprise: lower clapboard and the upper clapboard being located at described lower clapboard upper end, the upper-end surface of described lower clapboard is provided with first ring connected in star, the lower end surface of described upper clapboard is provided with the second annular groove, described first ring connected in star relative with described second annular groove and composition annular pass, described lower clapboard is provided with the lower channel be communicated with the air outlet of described second compression member, described upper clapboard is provided with the upper channel be communicated with the intakeport of described 3rd compression member, described second gas channel is by described annular pass, described upper channel and described lower channel composition.
The chiller plant of embodiment according to a second aspect of the present invention, comprises three stage compressor described according to a first aspect of the present invention.Because three stage compressor has above-mentioned advantage, therefore, by arranging this three stage compressor thus the efficiency of refrigeration system and refrigerating/heating performance can being made to be improved.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of three stage compressor according to an embodiment of the invention;
Fig. 2 is the structural representation of three stage compressor in accordance with another embodiment of the present invention.
Reference character:
Three stage compressor 100;
Housing 20; Shell air inlet 201; Housing relief opening 202; Suction tude 203
Upper bearing (metal) 30; Lower bearing 40.
Compressing mechanism 10;
One stage of compression parts 1; One-level cylinder 11; One stage impeller 12; The intakeport 13 of one stage of compression parts;
Two-stage compression parts 2; Secondary cylinder 21; Secondary roller 22; The intakeport 23 of two-stage compression parts;
Three stage compression parts 3; Three-stage cylinder 31; Three grades of rollers 32; Three grades of impellers 33; The intakeport 34 of three stage compression parts;
First dividing plate 4; First gas channel 41; Diffusion groove 42;
Second partition 5; Second gas channel 51; Annular pass 511; First ring connected in star 5111; Second annular groove 5112; Upper channel 512; Lower clapboard 52; Upper clapboard 53;
Bent axle 6; Main part 61; Off-axis portion 62.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1 and Fig. 2, the three stage compressor 100 according to the embodiment of the present invention is described.As depicted in figs. 1 and 2, housing 20 and compressing mechanism 10 is comprised according to the three stage compressor 100 of the embodiment of the present invention.Compressing mechanism 10 is located in housing 20, and compressing mechanism 10 comprises one stage of compression parts 1, two-stage compression parts 2, three stage compression parts 3, first dividing plate 4, second partition 5 and bent axle 6.
Two-stage compression parts 2 are located at the top of one stage of compression parts 1, and three stage compression parts 3 are located at the top of two-stage compression parts 2.First dividing plate 4 is located between one stage of compression parts 1 and two-stage compression parts 2, first dividing plate 4 is provided with the first gas channel 41 of the intakeport 23 of air outlet for being communicated with one stage of compression parts 1 and two-stage compression parts 2, second partition 5 is located between two-stage compression parts 2 and three stage compression parts 3, and second partition 5 is provided with the second gas channel 51 of the intakeport 34 of air outlet for being communicated with two-stage compression parts 2 and three stage compression parts 3.Housing 20 is provided with shell air inlet 201 and housing relief opening 202.The intakeport 13 of one stage of compression parts 1 is connected with shell air inlet 201, and the air outlet of three stage compression parts 3 is connected with housing relief opening 202.
When three stage compressor 100 works, refrigerant gas to enter in one stage of compression parts 1 through the intakeport 13 of one stage of compression parts 1 from shell air inlet 201 and carries out first compression, again successively through the air outlet of one stage of compression parts 1, the first gas channel 41 on first dividing plate 4 and the intakeport 23 of two-stage compression parts 2 enter in two-stage compression parts 2 and carry out secondary compression, again successively through the air outlet of two-stage compression parts 2, the second gas channel 51 on second partition 5 and the intakeport 34 of three stage compression parts 3 enter in three stage compression parts 3 and carry out three second compression, finally discharge three stage compressor 100 through the air outlet of three stage compression parts 3 and housing relief opening 202 successively again, complete three second compression processes of refrigeration agent thus.
In an embodiment of the present invention, one stage of compression parts 1, two-stage compression parts 2 and three stage compression parts 3 comprise at least one rotary compression parts and at least one centrifugal compressed parts, wherein rotary compression parts comprise rotary cylinder, are located at roller in cylinder and reciprocable and the slide plate be only against on roller, the impeller that centrifugal compressed parts comprise centrifugal type gas cylinder and are rotatably located in centrifugal type gas cylinder.
It should be noted that, refrigerant gas enters in rotary compression parts, promotes the pressure of refrigerant gas by the rotation of roller in rotary cylinder; Refrigerant gas enters into after in centrifugal compressed parts, by the High Rotation Speed of impeller, the speed of refrigerant gas is promoted, then reduces gas flow rate through diffusion structure thus improve refrigerant gas pressure.Alternatively, roller can be identical with the structure of slide plate with the roller in rotary compressor of the prior art with the structure of slide plate, and the structure of impeller also can be identical with the blade wheel structure in centrifugal compressor of the prior art, do not repeat them here.
That is, first in one stage of compression parts 1, two-stage compression parts 2 and three stage compression parts 3 be configured to centrifugal compressed parts, second be configured to rotary compression parts, the 3rd can be configured to centrifugal compressed parts or rotary compression parts can be configured to.In other words, one stage of compression parts 1, two-stage compression parts 2 and three stage compression parts 3, rotary compression parts and two centrifugal compressed parts can be comprised in these three compression member, or centrifugal compressed parts and two rotary compression parts can be comprised in these three compression member.
Specifically, there are following six specific embodiments here:
The first, one stage of compression parts 1 are configured to rotary compression parts, and two-stage compression parts 2 are configured to centrifugal compressed parts, and three stage compression parts 3 are configured to centrifugal compressed parts (scheming not shown);
The second, one stage of compression parts 1 are configured to centrifugal compressed parts, and two-stage compression parts 2 are configured to rotary compression parts, and three stage compression parts 3 are configured to centrifugal compressed parts, as shown in Figure 2;
Three, one stage of compression parts 1 are configured to centrifugal compressed parts, and two-stage compression parts 2 are configured to centrifugal compressed parts, and three stage compression parts 3 are configured to rotary compression parts (scheming not shown);
Four, one stage of compression parts 1 are configured to centrifugal compressed parts, and two-stage compression parts 2 are configured to rotary compression parts, and three stage compression parts 3 are configured to rotary compression parts, as shown in Figure 1;
Five, one stage of compression parts 1 are configured to rotary compression parts, and two-stage compression parts 2 are configured to centrifugal compressed parts, and three stage compression parts 3 are configured to rotary compression parts (scheming not shown);
Six, one stage of compression parts 1 are configured to rotary compression parts, and two-stage compression parts 2 are configured to rotary compression parts, and three stage compression parts 3 are configured to centrifugal compressed parts (scheming not shown).
Wherein, at least one off-axis portion 62 that bent axle 6 comprises main part 61 and is formed on main part 61, roller sleeve is located in off-axis portion 62, and impeller set is located on main part 61.That is, when three compression member comprise rotary compression parts, bent axle 6 is formed with an off-axis portion 62; When three compression member comprise two rotary compression parts, bent axle 6 is formed with two off-axis portions 62.
According to the three stage compressor 100 of the embodiment of the present invention, by rotary compression parts and centrifugal compressed parts are combined as a whole, thus the advantage of centrifugal compressed parts can be utilized to promote the efficiency of three stage compressor 100, namely the exhaust of centrifugal compressed parts continuously, uninterruptedly, and exhaust temperature rise is little, thus each compression member that can overcome in prior art in three stage compressor 100 is the shortcoming of rotary compression parts, and then efficiency and the refrigerating/heating performance of three stage compressor 100 can be promoted.
In addition, for three stage compressor 100 of the prior art, the bent axle 6 of the three stage compressor 100 in the embodiment of the present invention arranges two off-axis portions 62 at the most, greatly can reduce assembling difficulty like this.
As depicted in figs. 1 and 2, in preferred embodiment of the present invention, one stage of compression parts 1 can be set to centrifugal compressed parts, like this, the exhaust of one stage of compression parts 1 has continuity, the air-breathing of two-stage compression parts 2 and three stage compression parts 3 can be made more sufficient, and the temperature rise of one stage of compression parts 1 is little, very favorable effect is served to the lifting of the volumetric efficiency of two-stage compression parts 2 and three stage compression parts 3.More effectively can promote working efficiency and the refrigerating/heating performance of three stage compressor 100 thus.
Describe according to first concrete example of the present invention referring to Fig. 1.
As shown in Figure 1, one stage of compression parts 1 are configured to centrifugal compressed parts and one stage of compression parts 1 comprise one-level cylinder 11 and are located at the one stage impeller 12 in one-level cylinder 11; Two-stage compression parts 2 are configured to rotary compression parts and two-stage compression parts 2 comprise secondary cylinder 21, are located at secondary roller 22 in secondary cylinder 21 and reciprocable and the secondary slide plate be only against in secondary roller 22; Three stage compression parts 3 are configured to rotary compression parts and three stage compression parts 3 comprise three-stage cylinder 31, are located at three grades of rollers 32 in three-stage cylinder 31 and reciprocable and the three grades of slide plates be only against in three grades of rollers 32.
By one stage of compression parts 1 are set to centrifugal compressed parts, thus can utilize the advantage of centrifugal compressed parts and gas temperature rise less, air-flow continuity is good, the volumetric efficiency of two-stage compression parts 2, three stage compression parts 3 is promoted and plays favourable effect, more effectively can promote efficiency and the refrigerating/heating performance of three stage compressor 100 thus.
The present invention adopts combined type to compress, the first compression member of rolling piston of the prior art compression is substituted with centrifugal compressed, utilize the gas temperature rise of centrifugal compressed less, the advantage that air-flow continuity is good, improve the volumetric efficiency of two-stage compression parts 2, three stage compression parts 3.And, the present invention can increase centrifugal compressed parts on the three stage compressor of matured product, the bent axle 6 of three stage compressor of the prior art can be avoided with three eccentric parts to be difficult to the problem of assembling, and therefore three stage compressor 100 of the present invention all possesses advantage in performance and cost.
Further, the lumenal cross-section of one-level cylinder 11 reduces from bottom to top gradually, and the physical dimension of the lower end of one stage impeller 12 is greater than the physical dimension of the upper end of one stage impeller 12.One stage impeller 12 can be arranged in one-level cylinder 11 better thus.Alternatively, the main part 61 of bent axle 6 can be provided with ledge structure, and the external diameter of this ledge structure is greater than the external diameter of bent axle 6 main part 61, and one stage impeller 12 is set in the outside of ledge structure, one stage impeller 12 can be made thus to be arranged on bent axle 6 main part 61 better, to install more stable.
Alternatively, diffusion structure can be provided with in one-level cylinder 11, under the driving of one stage impeller 12, the speed of refrigerant gas can carry out diffusion after getting a promotion in one-level cylinder 11 like this, the structure of one stage of compression parts 1 can be made so compacter, thus the height of the above-below direction of three stage compressor 100 can be reduced.Certain the present invention is not limited to this, as shown in Figure 1, the lower end surface of the first dividing plate 4 is provided with the diffusion groove 42 with the inner space of one-level cylinder 11, the first gas channel 41 on first dividing plate 4 is for being communicated with the intakeport 23 of diffusion groove 42 and two-stage compression parts 2, that is, diffusion structure can be formed on the first dividing plate 4, can improve the volume of diffusion structure like this, and then the compression ratio of one stage of compression parts 1 can be improved, and then the volumetric efficiency of one stage of compression parts 1 can be improved.
Alternatively, diffusion groove 42 is annular, and the center of diffusion groove 42 can overlap with the rotating center of bent axle 6.Preferably, diffusion groove 42 is symmetrical arranged relative to the line between the intakeport 13 of one stage of compression parts 1 and the first gas channel 41, wherein this line refers to the horizontal line between the center of the intakeport 13 of one stage of compression parts 1 and the axis of the first gas channel 41, in the plan view of that is diffusion groove 42, diffusion groove 42 can become axially symmetric structure.The structure of diffusion groove 42 can be made thus more simple, easy to manufacture.
The cross-sectional dimension of diffusion groove 42 increases on the direction of the first gas channel 41 gradually at the intakeport 13 from one stage of compression parts 1, in the sectional view of that is three stage compressor 100 as shown in Figure 1, the cross-sectional dimension of diffusion groove 42 increases from right to left gradually, particularly, the area of the cross section of diffusion groove 42 increases from right to left gradually, thus, the pressure of the refrigerant gas of discharging from the first gas channel 41 can be made maximum, compression ratio is higher, and then the working efficiency of three stage compressor 100 is higher.
As shown in Figure 1, alternatively, the first gas channel 41 extends and just right with the intakeport 23 of two-stage compression parts 2 along the vertical direction, and the refrigerant gas after diffusion groove 42 diffusion can be made thus to be more promptly drained in two-stage compression parts 2.
Alternatively, the intakeport 13 of one stage of compression parts 1 is formed on the sidewall of one-level cylinder 11, the suction tude 203 of three stage compressor 100 is communicated with the intakeport 13 of one stage of compression parts 1, and one stage of compression parts 1 can form radial air inlet, axial structure of giving vent to anger thus.But the present invention is not limited to this, the structure that one stage of compression parts 1 can also be configured to axial admission, axially give vent to anger, or the structure that one stage of compression parts 1 can also be configured to axial admission, radial direction is given vent to anger, as long as can ensure that the gas between one stage of compression parts 1 and two-stage compression parts 2 is communicated with.
With reference to shown in Fig. 1, second partition 5 comprises lower clapboard 52 and is located at the upper clapboard 53 of lower clapboard 52 upper end, the upper-end surface of lower clapboard 52 is provided with first ring connected in star 5111, the lower end surface of upper clapboard 53 is provided with the second annular groove 5112, first ring connected in star 5111 relative with the second annular groove 5112 and composition annular pass 511, lower clapboard 52 is provided with the lower channel be communicated with the air outlet of the second compression member, upper clapboard 53 is provided with the upper channel 512 be communicated with the intakeport of the 3rd compression member, second gas channel 51 is by annular pass 511, upper channel 512 and lower channel composition.That is, the refrigerant gas that the air outlet of two-stage compression parts 2 is discharged is entered in three stage compressor 100 by lower channel, annular pass 511 and upper channel 512 successively and compresses.Like this by arranging annular pass 511, thus the effect of intermediate cavity can be played in annular pass 511, can improve the exhaust continuity of two-stage compression parts 2 thus, and then can improve the volumetric efficiency of three stage compression parts 3.And by second partition 5 is set to upper and lower spaced upper clapboard 53 and lower clapboard 52, thus can make the structure of second partition 5 more simple, manufacture convenient.
Certain the present invention is not limited to this, and second partition 5 can also be integrated formed structure, can improve structural strength and the structure stability of second partition 5 thus.
Describe according to second concrete example of the present invention referring to Fig. 2.
As shown in Figure 2, one stage of compression parts 1 are configured to centrifugal compressed parts and one stage of compression parts 1 comprise one-level cylinder 11 and are located at the one stage impeller 12 in one-level cylinder 11; Two-stage compression parts 2 are configured to rotary compression parts and two-stage compression parts 2 comprise secondary cylinder 21, are located at secondary roller 22 in secondary cylinder 21 and reciprocable and the secondary slide plate be only against in secondary roller 22; Three stage compression parts 3 are configured to centrifugal compressed parts and three stage compression parts 3 comprise three-stage cylinder 31 and the three grades of impellers 33 be located in three-stage cylinder 31.
By one stage of compression parts 1 and three stage compression parts 3 are all set to centrifugal compressed parts, thus can utilize the advantage of centrifugal compressed parts and gas temperature rise less, air-flow continuity is good, the volumetric efficiency of two-stage compression parts 2 is promoted and plays favourable effect, more effectively can promote efficiency and the refrigerating/heating performance of three stage compressor 100 thus.
The present invention adopts combined type to compress, the first compression member of rolling piston of the prior art compression is substituted with centrifugal compressed, utilize the gas temperature rise of centrifugal compressed less, the advantage that air-flow continuity is good, improve the volumetric efficiency of two-stage compression parts 2, three stage compression parts 3.And, the present invention can increase two-stage centrifugal compression member on the three stage compressor of matured product, the bent axle 6 of three stage compressor of the prior art can be avoided with three off-axis portions to be difficult to the problem of assembling, and therefore three stage compressor 100 of the present invention all possesses advantage in performance and cost.
Particularly, the first dividing plate 4 can be identical with the exemplary construction shown in Fig. 1 with the structure of second partition 5, is not described in detail in this.
Certainly, be also provided with upper bearing (metal) 30 and lower bearing 40 in three stage compressor 100, upper bearing (metal) 30 is located at above three stage compression parts 3, and lower bearing 40 is located at the below of one stage of compression parts 1.In the illustrated example shown in fig. 2, the diffusion structure in three stage compression parts 3 is formed in three-stage cylinder 31.But the present invention is not limited to this, the lower end surface of upper bearing (metal) 30 can be provided with diffusion structure, the compression ratio of three stage compression parts 3 can be improved thus.
The refrigeration system of embodiment according to a second aspect of the present invention, comprise the three stage compressor 100 of embodiment according to a first aspect of the present invention, because three stage compressor 100 has above-mentioned advantage, therefore, by arranging this three stage compressor 100 thus the efficiency of refrigeration system and refrigerating/heating performance can being made to be improved.
Alternatively, this refrigeration system can be the equipment such as refrigerator, air-conditioning.Its concrete refrigeration cycle structure, electrical structure etc. and operation are all known for those of ordinary skills, no longer describe in detail here.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a three stage compressor, is characterized in that, comprising:
Housing;
Compressing mechanism, described compressing mechanism is located in described housing, described compressing mechanism comprises: one stage of compression parts, two-stage compression parts and three stage compression parts, wherein said one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise at least one rotary compression parts and at least one centrifugal compressed parts, wherein said rotary compression parts comprise rotary cylinder, be located at roller in described cylinder and reciprocable and the slide plate be only against on described roller, the impeller that described centrifugal compressed parts comprise centrifugal type gas cylinder and are rotatably located in described centrifugal type gas cylinder,
First dividing plate, described first dividing plate is located between described one stage of compression parts and described two-stage compression parts, and described first dividing plate is provided with the first gas channel of the intakeport of air outlet for being communicated with described one stage of compression parts and described two-stage compression parts;
Second partition, described second partition is located between described two-stage compression parts and described three stage compression parts, and described second partition is provided with the second gas channel of the intakeport of air outlet for being communicated with described two-stage compression parts and described three stage compression parts;
Bent axle, described bent axle comprises main part and is formed at least one the off-axis portion on described main part, and described roller sleeve is located in described off-axis portion, and described impeller set is located on described main part.
2. three stage compressor according to claim 1, is characterized in that, described one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise described centrifugal compressed parts and two described rotary compression parts.
3. three stage compressor according to claim 2, is characterized in that, described two-stage compression parts are positioned at the top of described one stage of compression parts, and described three stage compression parts are positioned at the top of described two-stage compression parts, further:
Described one stage of compression parts are configured to described centrifugal compressed parts and described one stage of compression parts comprise one-level cylinder and are located at the one stage impeller in described one-level cylinder;
Described two-stage compression parts are configured to described rotary compression parts and described two-stage compression parts comprise secondary cylinder, are located at secondary roller in described secondary cylinder and reciprocable and the secondary slide plate be only against in described secondary roller;
Described three stage compression parts are configured to described rotary compression parts and described three stage compression parts comprise three-stage cylinder, are located at three grades of rollers in described three-stage cylinder and reciprocable and the three grades of slide plates be only against in described three grades of rollers.
4. three stage compressor according to claim 1, is characterized in that, described one stage of compression parts, described two-stage compression parts and described three stage compression parts comprise two described centrifugal compressed parts and described rotary compression parts.
5. three stage compressor according to claim 4, is characterized in that, described two-stage compression parts are positioned at the top of described one stage of compression parts, and described three stage compression parts are positioned at the top of described two-stage compression parts, further:
Described one stage of compression parts are configured to described centrifugal compressed parts and described one stage of compression parts comprise one-level cylinder and are located at the one stage impeller in described one-level cylinder;
Described two-stage compression parts are configured to described rotary compression parts and described two-stage compression parts comprise secondary cylinder, are located at secondary roller in described secondary cylinder and reciprocable and the secondary slide plate be only against in described secondary roller;
Described three stage compression parts are configured to described centrifugal compressed parts and described three stage compression parts comprise three-stage cylinder and are located at three grades of impellers in described three-stage cylinder.
6. the three stage compressor according to claim 3 or 5, is characterized in that, the lumenal cross-section of described one-level cylinder reduces from bottom to top gradually, and the physical dimension of the lower end of described one stage impeller is greater than the physical dimension of the upper end of described one stage impeller.
7. the three stage compressor according to claim 3 or 5, it is characterized in that, the lower end surface of described first dividing plate is provided with the diffusion groove with the inner space of described one-level cylinder, and the first gas channel on described first dividing plate is for being communicated with the intakeport of described diffusion groove and described two-stage compression parts.
8. three stage compressor according to claim 7, is characterized in that, described diffusion groove is annular, and the cross-sectional dimension of described diffusion groove increases on the direction of described first gas channel gradually at the intakeport from described one stage of compression parts.
9. three stage compressor according to claim 1, is characterized in that, described second partition, comprising:
Lower clapboard and the upper clapboard being located at described lower clapboard upper end, the upper-end surface of described lower clapboard is provided with first ring connected in star, the lower end surface of described upper clapboard is provided with the second annular groove, described first ring connected in star relative with described second annular groove and composition annular pass, described lower clapboard is provided with the lower channel be communicated with the air outlet of described second compression member, described upper clapboard is provided with the upper channel be communicated with the intakeport of described 3rd compression member, and described second gas channel is made up of described annular pass, described upper channel and described lower channel.
10. a chiller plant, is characterized in that, comprises the three stage compressor according to any one of claim 1-9.
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| DE2745762A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | Two stage IC engine fuel pump - has both stages mounted on common bearing sleeve to transmit drive between them |
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| CN203906284U (en) * | 2013-06-28 | 2014-10-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
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| CN204627933U (en) * | 2015-03-26 | 2015-09-09 | 广东美芝制冷设备有限公司 | Three stage compressor and the chiller plant with it |
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| DE2745762A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | Two stage IC engine fuel pump - has both stages mounted on common bearing sleeve to transmit drive between them |
| CN2059466U (en) * | 1989-11-29 | 1990-07-18 | 辽宁省黑山县潜水泵厂 | Multifunctional electric immersible pump |
| CN104334884A (en) * | 2012-04-19 | 2015-02-04 | 三菱电机株式会社 | Hermetically sealed compressor and vapor compression refrigeration cycle device with hermetically sealed compressor |
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| CN104728089B (en) | 2017-09-19 |
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