CN219865472U - Compression assembly for compressor, compressor and refrigeration equipment - Google Patents
Compression assembly for compressor, compressor and refrigeration equipment Download PDFInfo
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- CN219865472U CN219865472U CN202320906373.XU CN202320906373U CN219865472U CN 219865472 U CN219865472 U CN 219865472U CN 202320906373 U CN202320906373 U CN 202320906373U CN 219865472 U CN219865472 U CN 219865472U
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- 238000007906 compression Methods 0.000 title claims abstract description 164
- 230000006835 compression Effects 0.000 title claims abstract description 163
- 238000005057 refrigeration Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 124
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 6
- 230000010349 pulsation Effects 0.000 abstract description 10
- 230000001502 supplementing effect Effects 0.000 abstract description 4
- 239000013589 supplement Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 3
- 230000000153 supplemental effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of refrigeration equipment, and discloses a compression assembly for a compressor. The first compression mechanism and the second compression mechanism are both arranged in the installation space inside the shell. The first compression mechanism is provided with an exhaust port. The second compression mechanism is provided with an air intake. The intermediate chamber structure is arranged outside the shell and comprises a first air inlet pipe and a first air outlet pipe. The first compression mechanism is positioned at the lower part of the second compression mechanism, the middle cavity structure is higher than the second compression mechanism in the vertical direction, and the first air inlet pipe is communicated with the air outlet of the first compression mechanism. The first exhaust pipe is communicated with an air inlet of the second compression mechanism. The middle cavity structure is arranged outside the shell, the volume of the middle cavity structure can be increased according to actual conditions, the gas pulsation in the middle cavity structure is reduced, and the reduction of the actual air supplementing amount caused by the gas expansion in the middle cavity structure can be avoided, so that the energy efficiency of the compressor is improved. The utility model also discloses a compressor and refrigeration equipment.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a compression assembly for a compressor, the compressor and the refrigeration equipment.
Background
At present, the traditional single-stage compressor has the defects of poor high-temperature refrigeration and low-temperature heating effects, low energy efficiency and the like. As a core component of a refrigeration apparatus, a two-stage compressor is replacing a conventional single-stage compressor step by step due to its higher energy efficiency, along with development of technology. The two-stage compressor generally comprises a first-stage compression mechanism and a second-stage compression mechanism, wherein a low-pressure chamber is arranged in the first-stage compression mechanism, a high-pressure chamber is arranged in the second-stage compression mechanism, an intermediate chamber is arranged between the first-stage compression mechanism and the second-stage compression mechanism, and the intermediate chamber is a chamber in which exhaust gas and air supplement are mixed after the first-stage compression mechanism compresses. The two-stage compression process is as follows: medium-pressure gas and supplementary gas compressed by the first-stage compression mechanism are mixed through the middle chamber and then enter the second-stage compression mechanism for further compression. Therefore, the size of the volume of the medium pressure chamber is one of the important factors affecting the compressor efficiency. In the related art, the intermediate chamber is generally disposed inside the pump body of the compressor, and the volume of the intermediate chamber is set smaller due to the restriction of the pump body structure.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in the related art, the middle chamber of the two-stage compressor is arranged in the pump body, the volume of the middle chamber is smaller, the pulsation of the medium-pressure gas compressed by the primary compression structure and the air after the air supplement enters the middle chamber is larger, and the medium-pressure gas and the air supplement can be overheated and expanded when entering the middle chamber due to the higher temperature in the pump body, so that the actual air supplement amount is reduced, and the energy efficiency of the compressor is affected.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a compression assembly for a compressor, the compressor and refrigeration equipment, and aims to solve the problem that the energy efficiency of the compressor is affected due to the fact that the volume of an intermediate chamber of a two-stage compressor is smaller and is arranged in a pump body.
In some embodiments, a compression assembly for a compressor includes a housing, a first compression mechanism, a second compression mechanism, and an intermediate chamber structure. The housing defines an installation space therein. The first compression mechanism is arranged in the installation space and is provided with an exhaust port. The second compression mechanism is arranged in the installation space and is provided with an air inlet. The intermediate chamber structure is arranged outside the shell and comprises a first air inlet pipe and a first air outlet pipe. The first air inlet pipe is communicated with an air outlet of the first compression mechanism and used for guiding air of the first compression mechanism into the middle cavity structure, and the first air outlet pipe is communicated with an air inlet of the second compression mechanism and used for guiding air of the middle cavity structure into the second compression mechanism.
Optionally, the displacement of the first compression mechanism is V 1 . The displacement of the second compression mechanism is V 2 . The volume of the intermediate cavity structure is V 3 . Wherein V is more than or equal to 10 3 /V 1 ≤50，0.5≤V 2 /V 1 ≤0.95。
Alternatively, 15.ltoreq.V 3 /V 1 ≤25，0.6≤V 2 /V 1 ≤0.75。
Optionally, the intermediate chamber structure further comprises a second air inlet pipe. The second air inlet pipe is arranged at the top of the middle cavity structure.
Optionally, the first air inlet pipe has an inner diameter D 1 . The inner diameter of the first exhaust pipe is D 2 . The inner diameter of the second air inlet pipe is D 3 . Wherein D is 0.7-0 2 /D 1 ≤0.95，0.2≤D 3 /D 1 ≤0.5。
Optionally 0.75.ltoreq.D 2 /D 1 ≤0.85，0.3≤D 3 /D 1 ≤0.4。
In some embodiments, the compressor includes a compression assembly and a second discharge tube as described above for the compressor. The second exhaust pipe is arranged at the upper part of the shell and is used for exhausting the gas exhausted by the second compression mechanism outside the shell.
Optionally, the compressor further comprises a liquid separator, the liquid separator is arranged outside the shell, and the liquid separator is provided with a third exhaust pipe. The first compression mechanism is provided with an air inlet, wherein a third exhaust pipe is communicated with the air inlet of the first compression mechanism and is used for guiding the gas in the liquid separator into the first compression mechanism.
In some embodiments, the refrigeration device includes a compression assembly for a compressor as described above or a compressor as described above.
Optionally, the refrigeration device further comprises a flash evaporator, and the flash evaporator is provided with an air outlet. And under the condition that the middle cavity structure comprises a second air inlet pipe, the second air inlet pipe is communicated with the air outlet of the flash evaporator and is used for guiding the air in the flash evaporator into the middle cavity structure.
The compression assembly for the compressor, the compressor and the refrigeration equipment provided by the embodiment of the disclosure can realize the following technical effects:
the embodiment of the disclosure provides a compression assembly for a compressor, which comprises a shell, a first compression mechanism, a second compression mechanism and an intermediate cavity structure. Through setting up the intermediate chamber structure in the outside of casing, first compression mechanism sets up the lower part that is located second compression mechanism, and the position setting of intermediate chamber structure is higher than second compression mechanism in the vertical direction. And the first air inlet pipe is communicated with the air outlet of the first compression mechanism and used for guiding the air of the first compression mechanism into the middle cavity structure, and the first air outlet pipe is communicated with the air inlet of the second compression mechanism and used for guiding the air of the middle cavity structure into the second compression mechanism. Therefore, on the basis that compressed gas which can be led into the first compression mechanism is satisfied, and meanwhile, the gas in the middle cavity structure can be discharged to the second compression mechanism, the volume of the middle cavity structure is not limited by the pump body structure of the compressor. Therefore, the volume of the middle cavity structure can be increased according to actual conditions, the volume of the middle cavity structure can be properly increased, and the pulsation of medium-pressure gas compressed by the primary compression structure and gas after the gas supplement enters the middle cavity is reduced. Moreover, because the middle cavity structure is arranged outside the pump body, medium-pressure gas and air supplement can not be expanded due to the influence of the internal temperature of the pump body when entering the middle cavity, so that the actual air supplement amount can not be reduced, and the energy efficiency of the compressor is improved.
Further, the middle cavity structure is arranged outside the shell, so that the span of a crankshaft in the pump body structure can be reduced, the axial stress of the crankshaft is reduced, the integral deflection of the crankshaft is reduced, and the reliability and energy efficiency of the compressor are improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic view of a compression assembly for a compressor according to an embodiment of the present disclosure, wherein the direction of the arrows is the direction of flow of the gas;
FIG. 2 is a schematic illustration of an intermediate chamber structure provided in an embodiment of the present disclosure;
FIG. 3 is a schematic view of a dispenser according to an embodiment of the present disclosure;
fig. 4 is a graph showing a variation trend of pressure pulsation of an intermediate chamber structure of a compressor and a related art compressor according to an increase of an operation frequency of the compressor according to an embodiment of the present disclosure;
fig. 5 is a graph showing a variation trend of the refrigerating capacity of a compressor according to an embodiment of the present disclosure and a related art compressor according to an increase in the operating frequency of the compressor.
Reference numerals:
10: a housing; 11: a first compression mechanism; 12: a second compression mechanism; 13: a second exhaust pipe;
20: an intermediate cavity structure; 21: a first air inlet pipe; 22: a first exhaust pipe; 23: a second air inlet pipe;
30: a knockout; 31: and a third exhaust pipe.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.
In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.
The embodiment of the disclosure provides a compression assembly for a compressor, the compressor and refrigeration equipment, and aims to solve the problem that the energy efficiency of the compressor is affected due to the fact that the volume of an intermediate chamber of a two-stage compressor is smaller and is arranged in a pump body.
As shown in connection with fig. 1-3, embodiments of the present disclosure provide a compression assembly for a compressor including a housing 10, a first compression mechanism 11, a second compression mechanism 12, and an intermediate chamber structure 20. The housing 10 defines an installation space therein. The first compression mechanism 11 is provided in the installation space, and the first compression mechanism 11 is provided with an exhaust port. The second compression mechanism 12 is provided in the installation space, and the second compression mechanism 12 is provided with an air intake. The intermediate chamber structure 20 is provided outside the housing 10, and the intermediate chamber structure 20 includes a first intake pipe 21 and a first exhaust pipe 22. Wherein the first compression mechanism 11 is located at the lower part of the second compression mechanism 12, the middle chamber structure 20 is located higher than the second compression mechanism 12 in the vertical direction, the first air inlet pipe 21 is communicated with the air outlet of the first compression mechanism 11 for guiding the air of the first compression mechanism 11 into the middle chamber structure 20, and the first air outlet pipe 22 is communicated with the air inlet of the second compression mechanism 12 for guiding the air of the middle chamber structure 20 into the second compression mechanism 12.
The compression assembly for a compressor provided by the embodiments of the present disclosure includes a housing 10, a first compression mechanism 11, a second compression mechanism 12, and an intermediate chamber structure 20. The housing 10 defines an installation space therein. The first compression mechanism 11 and the second compression mechanism 12 are both disposed inside the installation space, and the first compression mechanism 11 is provided with an exhaust port for exhausting the gas inside the first compression mechanism 11. The second compression mechanism 12 is provided with an air inlet for introducing outside air into the second compression mechanism 12. The intermediate chamber structure 20 is provided outside the housing 10, and the intermediate chamber structure 20 is provided with a first intake pipe 21 and a first exhaust pipe 22. By disposing the first compression mechanism 11 at the lower portion of the second compression mechanism 12, the intermediate chamber structure 20 is disposed at a position vertically higher than the second compression mechanism 12. And the first intake pipe 21 is communicated with the exhaust port of the first compression mechanism 11 for introducing the gas of the first compression mechanism 11 into the intermediate chamber structure 20, and the first exhaust pipe 22 is communicated with the intake port of the second compression mechanism 12 for introducing the gas of the intermediate chamber structure 20 into the second compression mechanism 12. The intermediate chamber structure 20 is arranged outside the shell 10 in this way, and the volume of the intermediate chamber structure 20 is not limited by the pump body structure of the compressor on the basis that the primary compressed gas which can be discharged by the first compression mechanism 11 can be introduced and the gas in the intermediate chamber structure 20 can be discharged to the second compression mechanism 12. Therefore, the volume of the middle cavity structure 20 can be increased according to the actual situation, the volume of the middle cavity structure 20 can be properly increased, and the pulsation of the medium-pressure gas after primary compression and the gas supplementing of the primary compression structure enter the middle cavity can be reduced. Moreover, since the intermediate chamber structure 20 is disposed outside the housing 10, the intermediate pressure gas and the air supply are not expanded due to the influence of the internal temperature of the pump body when entering the intermediate chamber, thereby not causing the actual air supply to be reduced and further improving the energy efficiency of the compressor.
Further, the middle cavity structure 20 is arranged outside the shell 10, so that the span of a crankshaft in the pump body structure can be reduced, the axial stress of the crankshaft is reduced, the integral deflection of the crankshaft is reduced, and the reliability and energy efficiency of the compressor are improved.
For convenience of description, the first compression mechanism 11 is taken as a low-pressure compression mechanism, and the second compression mechanism 12 is taken as a high-pressure compression mechanism as an example.
It will be appreciated that, in conjunction with the arrow direction in fig. 1 being the gas flow direction, the knockout 30 discharges the low pressure gas from the third exhaust pipe 31 and directs it into the first compression mechanism 11 for primary compression to form a medium pressure gas. Then, medium-pressure gas enters the intermediate chamber structure 20 through the first air inlet pipe 21 of the intermediate chamber structure 20, is mixed with the air supplementing entering the intermediate chamber structure 20 through the second air inlet pipe 23 of the intermediate chamber structure 20 discharged from the flash evaporator, and is discharged through the first air outlet pipe 22 of the intermediate chamber structure 20, and is led into the second compression structure to be subjected to secondary compression to form high-pressure gas. The high-pressure gas is discharged from the second compression mechanism 12 to the inside of the casing 10, and finally the high-pressure gas is discharged to the outside of the casing 10 through the second exhaust pipe 13 at the upper portion of the casing 10.
Alternatively, the displacement of the first compression mechanism 11 is V 1 . The displacement of the second compression mechanism 12 is V 2 . The volume of the intermediate chamber structure 20 is V 3 . Wherein V is more than or equal to 10 3 /V 1 ≤50，0.5≤V 2 /V 1 ≤0.95。
So arranged, by setting the displacement of the first compression mechanism 11 to V 1 The displacement of the second compression mechanism 12 is set to V 2 The volume of the intermediate chamber structure 20 is set to V 3 . And the displacement of the first compression mechanism 11, the displacement of the second compression mechanism 12, and the volume of the intermediate chamber structure 20 are made to satisfy: v is more than or equal to 10 3 /V 1 ≤50，0.5≤V 2 /V 1 Less than or equal to 0.95. In this way, after the primary compressed gas and the air supplement discharged from the first compression mechanism 11 are led into the intermediate chamber structure 20 and mixed, the mixed gas of the intermediate chamber structure 20 is discharged to the second compression mechanism 12, so that the second compression mechanism 12 discharges enough secondary compressed gas, and the energy efficiency of the compressor is improved. For example, V 3 /V 1 ＝12、V 3 /V 1 ＝16、V 3 /V 1 ＝20、V 3 /V 1 ＝20、V 3 /V 1 ＝25，V 2 /V 1 ＝0.5、V 2 /V 1 ＝0.55、V 2 /V 1 ＝0.6、V 2 /V 1 ＝0.75、V 2 /V 1 ＝0.85、V 2 /V 1 ＝9、V 2 /V 1 ＝9.5。
Alternatively, 15.ltoreq.V 3 /V 1 ≤25，0.6≤V 2 /V 1 ≤0.75。
So configured, by setting the displacement of the first compression mechanism 11, the displacement of the second compression mechanism 12, and the volume of the intermediate chamber structure 20 to satisfy: v is 15 to or less 3 /V 1 ≤25，0.6≤V 2 /V 1 Less than or equal to 0.75 percent. This ensures that the intermediate chamber structure 20 mixes the primary compressed gas introduced into the first compression mechanism 11 and the supplemental air, and then the intermediate chamber structure20 to the second compression mechanism 12, so that the second compression mechanism 12 discharges enough secondary compressed gas, thereby further improving the energy efficiency of the compressor. For example, V 3 /V 1 ＝15、V 3 /V 1 ＝18、V 3 /V 1 ＝21、V 3 /V 1 ＝23、V 3 /V 1 ＝25，V 2 /V 1 ＝0.6、V 2 /V 1 ＝0.65、V 2 /V 1 ＝0.69、V 2 /V 1 ＝0.72、V 2 /V 1 ＝0.75。
Optionally, the intermediate chamber structure 20 further comprises a second air inlet pipe 23. The second air inlet pipe 23 is arranged at the top of the intermediate chamber structure 20.
So arranged, the intermediate chamber structure 20 is further provided with a second inlet duct 23, the second inlet duct 23 being arranged at the top of the intermediate chamber structure 20, so that gas can enter the intermediate chamber structure 20 through the second inlet duct 23. When the medium-pressure gas exhausted from the middle cavity structure 20 is insufficient to enter the second compression mechanism 12, the gas can be supplemented through the second gas inlet pipe 23, so that the operation is convenient.
Alternatively, the first air inlet pipe 21 has an inner diameter D 1 . The first exhaust pipe 22 has an inner diameter D 2 . The second air inlet pipe 23 has an inner diameter D 3 . Wherein D is 0.7-0 2 /D 1 ≤0.95，0.2≤D 3 /D 1 ≤0.5。
So arranged, as shown in connection with FIG. 2, by setting the inner diameter of the first air intake pipe 21 to D 1 The first exhaust pipe 22 has an inner diameter D 2 The second air inlet pipe 23 has an inner diameter D 3 . And the inner diameter of the first intake pipe 21, the inner diameter of the first exhaust pipe 22, and the inner diameter of the second intake pipe 23 are made to satisfy: d is more than or equal to 0.7 2 /D 1 ≤0.95，0.2≤D 3 /D 1 Less than or equal to 0.5. Thus, when the intermediate chamber structure 20 introduces the primary compressed gas discharged from the first compression mechanism 11 from the first intake pipe 21 and the supplemental gas from the second intake pipe 23, the gas circulation requirement of the intermediate chamber structure 20 is satisfied, and the requirement of discharging the mixed primary compressed gas of the intermediate chamber structure 20 to the second compression mechanism 12 is satisfied, thereby ensuring the energy efficiency of the compressor. Example(s)E.g. D 2 /D 1 ＝0.7、D 2 /D 1 ＝0.75、D 2 /D 1 ＝0.80、D 2 /D 1 ＝0.85、D 2 /D 1 ＝0.90、D 2 /D 1 ＝0.95，D 3 /D 1 ＝0.2、D 3 /D 1 ＝0.25、D 3 /D 1 ＝0.3、D 3 /D 1 ＝0.35、D 3 /D 1 ＝0.4、D 3 /D 1 ＝0.45、D 3 /D 1 ＝0.5。
Optionally 0.75.ltoreq.D 2 /D 1 ≤0.85，0.3≤D 3 /D 1 ≤0.4。
So configured, by setting the inner diameter of the first intake pipe 21, the inner diameter of the first exhaust pipe 22, and the length of the second intake pipe 23 to satisfy: d is more than or equal to 0.75 2 /D 1 ≤0.85，0.3≤D 3 /D 1 Less than or equal to 0.4. Thus, when the intermediate chamber structure 20 introduces the primary compressed gas discharged from the first compression mechanism 11 from the first intake pipe 21 and the supplemental gas from the second intake pipe 23, it is possible to improve the efficiency of the gas introduced into the intermediate chamber structure 20 and to satisfy the improvement of the efficiency of discharging the mixed primary compressed gas of the intermediate chamber structure 20 to the second compression mechanism 12, thereby further improving the energy efficiency of the compressor. For example, D 2 /D 1 ＝0.75、D 2 /D 1 ＝0.78、D 2 /D 1 ＝0.81、D 2 /D 1 ＝0.83、D 2 /D 1 ＝0.85，D 3 /D 1 ＝0.3、D 3 /D 1 ＝0.33、D 3 /D 1 ＝0.35、D 3 /D 1 ＝0.37、D 3 /D 1 ＝0.4。
In some embodiments, the compressor includes the compression assembly for a compressor described above and a second discharge tube 13. The second exhaust pipe 13 is provided at an upper portion of the casing 10 for exhausting the gas exhausted from the second compression mechanism 12 to the outside of the casing 10.
The disclosed embodiments also provide a compressor comprising the compression assembly for a compressor described above and a second discharge pipe 13. Thus, the intermediate chamber structure 20 of the compression assembly of the compressor is arranged outside the shell 10, and the energy efficiency of the compressor can be improved on the basis of meeting the internal gas circulation of the compressor. Further, a second exhaust pipe 13 is provided at an upper portion of the casing 10, and may be used to exhaust the gas discharged from the second compression mechanism 12 to the outside of the casing 10.
Optionally, the compressor further comprises a dispenser 30, the dispenser 30 being arranged outside the housing 10, the dispenser 30 being provided with a third exhaust pipe 31. The first compression mechanism 11 is provided with an air inlet, wherein a third exhaust pipe 31 communicates with the air inlet of the first compression mechanism 11 for introducing the gas in the dispenser 30 into the first compression mechanism 11.
So arranged, as shown in connection with fig. 3, the compressor further comprises a dispenser 30, the dispenser 30 being arranged outside the housing 10, and the dispenser 30 being provided with a third exhaust pipe 31. The first compression mechanism 11 is provided with an air inlet communicating with the third exhaust pipe 31 of the dispenser 30, and can be used to introduce the low-pressure gas discharged from the dispenser 30 into the first compression mechanism 11. The knockout 30 discharges the low-pressure gas from the third exhaust pipe 31, and introduces the low-pressure gas into the first compression mechanism 11 to perform primary compression to form medium-pressure gas. Then, medium-pressure gas enters the intermediate chamber structure 20 through the first air inlet pipe 21 of the intermediate chamber structure 20, is mixed with the air supplementing entering the intermediate chamber structure 20 through the second air inlet pipe 23 of the intermediate chamber structure 20 discharged from the flash evaporator, and is discharged through the first air outlet pipe 22 of the intermediate chamber structure 20, and is led into the second compression structure to be subjected to secondary compression to form high-pressure gas. The high-pressure gas is discharged from the second compression mechanism 12 to the inside of the casing 10, and finally the high-pressure gas is discharged to the outside of the casing 10 through the second exhaust pipe 13 at the upper portion of the casing 10.
The embodiment of the disclosure also provides a refrigeration device, which comprises the compression assembly for the compressor or the compressor.
By providing the above-described compression assembly for the compressor on the refrigeration equipment, such that the intermediate chamber structure 20 is disposed outside the housing 10, the energy efficiency of the compressor can be improved, thereby improving the energy efficiency of the refrigeration equipment. Alternatively, the refrigeration apparatus may be equipped with the above-mentioned compressor, and since the above-mentioned compressor includes the above-mentioned compression assembly for the compressor, the intermediate chamber structure 20 is disposed outside the casing 10, so that the energy efficiency of the compressor can be improved, and thus the energy efficiency of the refrigeration apparatus can be improved.
Optionally, the refrigeration device further comprises a flash evaporator, and the flash evaporator is provided with an air outlet. Where the intermediate chamber structure 20 includes a second air inlet pipe 23, the second air inlet pipe 23 communicates with an air outlet of the flash evaporator for introducing the gas in the flash evaporator into the intermediate chamber structure 20.
So arranged, the refrigeration apparatus is also provided with a flash evaporator. The flash evaporator is provided with an air outlet communicating with a second air inlet pipe 23 of the intermediate chamber structure 20 for introducing the gas in the flash evaporator into the intermediate chamber structure 20. In this way, the intermediate-pressure gas in the flash evaporator enters the intermediate chamber structure 20 through the second gas inlet pipe 23, is mixed with the primary compressed gas entering the intermediate chamber structure 20 from the first gas inlet pipe 21, and is introduced into the second compression mechanism 12 through the first gas outlet pipe 22 to be secondarily compressed. Finally, the air is discharged from the second exhaust duct 13 provided in the casing 10 to the outside of the casing 10, and enters the air circulation of the refrigeration apparatus.
For the convenience of understanding, the displacement of the first compression mechanism 11 is V 1 The displacement of the second compression mechanism 12 is V 2 The volume of the intermediate chamber structure 20 is V 3 Wherein V is 3 /V 1 ＝16，V 2 /V 1 =0.7; the first air inlet pipe 21 has an inner diameter D 1 The first exhaust pipe 22 has an inner diameter D 2 The second air inlet pipe 23 has an inner diameter D 3 Wherein D is 2 /D 1 ＝0.8，D 3 /D 1 For example, =0.35, the energy efficiency of the compressor was checked.
As shown in fig. 4, a solid line is a trend of pressure pulsation of the intermediate chamber structure 20 of the compressor provided in the embodiment of the present disclosure as the operating frequency of the compressor increases, and a broken line is a trend of pressure pulsation of the intermediate chamber structure of the compressor in the related art as the operating frequency of the compressor increases. As the operating frequency of the compressor increases, the pressure pulsation of the intermediate chamber structure 20 of the compressor provided by the embodiment of the present disclosure slowly increases and becomes gentle, whereas the pressure pulsation of the intermediate chamber structure of the compressor in the related art shows a larger rising trend. It can be seen that the compressor provided in the embodiment of the present disclosure, the provision of the intermediate chamber structure 20 outside the casing 10 effectively reduces pressure pulsation generated by gas inside the intermediate chamber structure 20, thereby effectively improving energy efficiency of the compressor.
Referring to fig. 5, a solid line in the drawing shows a trend of the compressor provided in the embodiment of the present disclosure, where the trend of the compressor in the related art, where the cooling capacity increases with the operating frequency, is shown by a dotted line in the drawing. As the operating frequency of the compressor increases, the refrigerating capacity of the compressor provided by the embodiment of the disclosure is always significantly higher than that of the compressor in the related art, that is, the refrigerating efficiency of the compressor provided by the embodiment of the disclosure is higher, that is, the energy efficiency of the compressor is higher.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A compression assembly for a compressor, comprising:
a housing defining an installation space therein;
the first compression mechanism is arranged in the installation space and is provided with an exhaust port;
the second compression mechanism is arranged in the installation space and is provided with an air inlet;
the middle cavity structure is arranged outside the shell and comprises a first air inlet pipe and a first air outlet pipe,
the first air inlet pipe is communicated with an air outlet of the first compression mechanism and used for guiding air of the first compression mechanism into the middle cavity structure, and the first air outlet pipe is communicated with an air inlet of the second compression mechanism and used for guiding air of the middle cavity structure into the second compression mechanism.
2. A compression assembly for a compressor as set forth in claim 1, wherein,
the displacement of the first compression mechanism is V 1 ；
The displacement of the second compression mechanism is V 2 ；
The volume of the intermediate cavity structure is V 3 ，
Wherein V is more than or equal to 10 3 /V 1 ≤50，0.5≤V 2 /V 1 ≤0.95。
3. A compression assembly for a compressor as set forth in claim 2, wherein,
15≤V 3 /V 1 ≤25，0.6≤V 2 /V 1 ≤0.75。
4. the compression assembly for a compressor of claim 1, wherein the intermediate chamber structure further comprises:
the second air inlet pipe is arranged at the top of the middle cavity structure.
5. A compression assembly for a compressor as recited in claim 4, wherein,
the inner diameter of the first air inlet pipe is D 1 ；
The inner diameter of the first exhaust pipe is D 2 ；
The inner diameter of the second air inlet pipe is D 3 ，
Wherein D is 0.7-0 2 /D 1 ≤0.95，0.2≤D 3 /D 1 ≤0.5。
6. A compression assembly for a compressor as set forth in claim 5, wherein,
0.75≤D 2 /D 1 ≤0.85，0.3≤D 3 /D 1 ≤0.4。
7. a compressor, comprising:
a compression assembly for a compressor as claimed in any one of claims 1 to 6;
and a second exhaust pipe provided at an upper portion of the housing for exhausting the gas exhausted from the second compression mechanism to an outside of the housing.
8. The compressor of claim 7, further comprising:
the liquid distributor is arranged outside the shell and is provided with a third exhaust pipe;
the first compression mechanism is provided with an air inlet,
the third exhaust pipe is communicated with the air inlet of the first compression mechanism and is used for guiding the air in the liquid separator into the first compression mechanism.
9. A refrigeration device comprising a compression assembly for a compressor according to any one of claims 1 to 6 or a compressor according to claim 7 or 8.
10. A refrigeration device according to claim 9, wherein,
the refrigeration equipment also comprises a flash evaporator, and the flash evaporator is provided with an air outlet;
and under the condition that the middle cavity structure comprises a second air inlet pipe, the second air inlet pipe is communicated with the air outlet of the flash evaporator and is used for guiding the air in the flash evaporator into the middle cavity structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320906373.XU CN219865472U (en) | 2023-04-20 | 2023-04-20 | Compression assembly for compressor, compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320906373.XU CN219865472U (en) | 2023-04-20 | 2023-04-20 | Compression assembly for compressor, compressor and refrigeration equipment |
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| Publication Number | Publication Date |
|---|---|
| CN219865472U true CN219865472U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320906373.XU Active CN219865472U (en) | 2023-04-20 | 2023-04-20 | Compression assembly for compressor, compressor and refrigeration equipment |
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| Country | Link |
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| CN (1) | CN219865472U (en) |
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