CN111306060A - Scroll compressor and refrigeration equipment - Google Patents
Scroll compressor and refrigeration equipment Download PDFInfo
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- CN111306060A CN111306060A CN202010118995.7A CN202010118995A CN111306060A CN 111306060 A CN111306060 A CN 111306060A CN 202010118995 A CN202010118995 A CN 202010118995A CN 111306060 A CN111306060 A CN 111306060A
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- scroll compressor
- cavity
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- suction
- compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a scroll compressor and refrigeration equipment. The scroll compressor includes: a housing having an intake port, a first exhaust port, and a second exhaust port; the compression assembly comprises a movable disc and a fixed disc, the fixed disc is provided with a working cavity, and the working cavity is divided by the movable disc in the process of moving relative to the fixed disc so as to form a first compression cavity and a second compression cavity which are independent of each other; the suction port is communicated with the working cavity, the first compression cavity is communicated with the first exhaust port, the second compression cavity is communicated with the second exhaust port, and the first exhaust port and the second exhaust port are used for exhausting gas with different pressures. Through making first compression chamber and first exhaust port intercommunication, second compression chamber and second exhaust port intercommunication are favorable to first exhaust port and second exhaust port to discharge the gas of different pressures, realize scroll compressor's double exhaust pressure, have avoided needing to adopt the function that a plurality of scroll compressors could realize multi exhaust pressure among the correlation technique, save space, reduce cost.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to a scroll compressor and refrigeration equipment.
Background
The scroll compressor in the related art has only a single discharge pressure, and a plurality of compressors are required to be connected to realize a multi-temperature refrigeration system, which leads to an increase in the cost of the product as a whole.
Therefore, how to design a scroll compressor that can provide multiple exhaust pressures simultaneously by using a single compressor is a problem to be solved.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a scroll compressor.
A second aspect of the invention proposes a refrigeration device.
In view of this, according to a first aspect of the present invention, there is provided a scroll compressor including: a housing having an intake port, a first exhaust port, and a second exhaust port; the compression assembly comprises a movable disc and a fixed disc, the fixed disc is provided with a working cavity, and the working cavity is divided by the movable disc in the process of moving relative to the fixed disc so as to form a first compression cavity and a second compression cavity which are independent of each other; the suction port is communicated with the working cavity, the first compression cavity is communicated with the first exhaust port, the second compression cavity is communicated with the second exhaust port, and the first exhaust port and the second exhaust port are used for exhausting gas with different pressures.
The invention provides a scroll compressor, which comprises a shell and a compression assembly, wherein the shell is provided with a gas suction port, a first gas exhaust port and a second gas exhaust port, the compression assembly comprises a movable disc and a static disc, the static disc is provided with a spiral working cavity, the movable disc can move in the working cavity of the static disc, a plurality of crescent sub working cavities are formed in the moving process, gas is gradually compressed, and the gas is sucked through the gas suction port communicated with the working cavity. Specifically, the working chamber is separated to form a first compression chamber and a second compression chamber in the process that the movable disc moves relative to the static disc, namely, when the movable disc rotates relative to the static disc to a preset angle range, the compressor can be separated to form the first compression chamber and the second compression chamber, at the moment, the two sub working chambers are independent of each other and are not communicated with each other, the pressure of the central area of the static disc is larger in a plurality of sub working chambers formed by separating the working chambers, the pressure of the first compression chamber is different from that of the second compression chamber, the second compression chamber is communicated with the second exhaust port by communicating the first compression chamber with the first exhaust port, the first exhaust port and the second exhaust port are favorable for exhausting gas with different pressures, so that the double exhaust pressure of the scroll compressor is realized, and the function of realizing the multi-exhaust pressure by adopting a plurality of scroll compressors in the related technology is avoided, the space is saved, the cost is reduced, and when the scroll compressor is applied to a refrigerating system, the cascade utilization of energy and energy conservation can be realized by connecting a plurality of heat exchangers.
It should be noted that, when the movable plate rotates to a predetermined angle range relative to the stationary plate, the volumes of the first compression chamber and the second compression chamber may change, but still remain relatively independent and are not communicated with each other.
In addition, according to the scroll compressor in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in one possible embodiment, the movable disk is provided with a first spiral portion, the stationary disk is provided with a spiral groove and a second spiral portion, the spiral groove is configured as a working chamber, the second spiral portion is configured as a groove side wall of the spiral groove, and the first spiral portion extends into the spiral groove and is engaged with the second spiral portion.
In the design, a first spiral part is arranged on the movable disc, a spiral groove is arranged on the static disc, namely, a spiral groove, at least one part of groove side wall of the spiral groove is formed by a second spiral part on the static disc, the spiral groove is enclosed to form a working cavity, and the first spiral part extends into the working cavity, moves in the working cavity and separates the working cavity. In the process of movable disk rotation, the lateral wall of first spiral portion and the many places of inside wall can laminate mutually with the groove lateral wall in helical groove to separate the working chamber and form independent crescent compression chamber, and press gas to the center in helical groove gradually, realize the compression to gas, and the port of breathing in is located outlying tip suction gas from the helical groove, realizes inhaling, compression and the discharge to gas.
In one possible design, the first compression pocket is closer to a central region of the spiral groove than the second compression pocket.
In this design, the gas pressure is greater closer to the center region of the scroll groove in the scroll compressor. And then through making first compression chamber compare in the central zone that second compression chamber is closer to the spiral groove, ensure that the gas pressure in two compression chambers is different for the gas pressure in the first compression chamber is greater than the gas pressure in the second compression chamber, thereby guarantees scroll compressor's double exhaust pressure.
In one possible design, the first compression pocket is located in a central region of the spiral groove and the second compression pocket is located outside the first compression pocket.
In this design, the first compression chamber is located in the center region of the spiral groove, and the second compression chamber is located outside the first compression chamber, so that the gas pressure in the first compression chamber is higher than the gas pressure in the second compression chamber, for example, the first compression chamber is used for discharging high-pressure gas, and the second compression chamber is used for discharging medium-pressure gas, thereby realizing double discharge pressure of the scroll compressor.
Wherein the discharge pressure of the first compression chamber is defined as the discharge pressure when the first spiral part and the second spiral part are engaged to be communicated with the first discharge port; the exhaust pressure of the second compression cavity is defined as the average pressure in the second compression cavity when the second compression cavity and the second exhaust port start to be communicated to the end communication process.
In one possible design, the movable disc separates the working cavity in the process of moving relative to the static disc, and a first air suction cavity and a second air suction cavity which are independent of each other are further formed in sequence; the first air suction cavity is formed by enclosing the outer side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery; the second air suction cavity is formed by enclosing the inner side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery; in the rotating process of the movable disc, the first compression cavity is communicated with the first air suction cavity, and the second compression cavity is communicated with the second air suction cavity.
In the design, the movable disc is particularly limited to be capable of separating the working cavity to sequentially form a first air suction cavity and a second air suction cavity in the process of rotating relative to the fixed disc, and particularly, the first air suction cavity is formed by enclosing the outer side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part, which is positioned at the periphery; the second air suction cavity is formed by enclosing the inner side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery, namely the first air suction cavity and the second air suction cavity are mutually independent. Therefore, in the process of rotating the movable disc, the first compression cavity can be communicated with the first air suction cavity, the second compression cavity is communicated with the second air suction cavity, namely, the gas in the first compression cavity is provided by the first air suction cavity, and the gas in the second compression cavity is provided by the second air suction cavity, so that the first compression cavity and the second compression cavity are mutually independent in the rotating process of the movable disc, and the double-exhaust pressure of the scroll compressor is realized.
In one possible design, the ratio of the volume of the second compression chamber to the suction volume of the compression assembly ranges from 0.374 to 0.656; and the air suction volume of the compression assembly is the sum of the volume of the first air suction cavity and the volume of the second air suction cavity.
In this design, the energy efficiency of the scroll compressor is advantageously increased by having a ratio of the volume of the second compression chamber to the suction volume of the compression assembly between 0.374 and 0.656. Wherein the volume of the second compression chamber is Vm, which can be expressed as the product of the area Am of the crescent-shaped cross section of the second compression chamber and the height H of the second spiral part. The suction volume Vsmax of the compression assembly, by default its maximum suction volume, may be expressed as the maximum suction area Asmax, i.e. the product of the crescent-shaped cross-sectional area of the suction cavity at maximum suction and the height H of the second spiral. The maximum suction volume is actually a specific maximum suction volume and is not limited to the extension of the spiral portion.
Specifically, the movable disc separates the working cavity in the process of moving relative to the static disc, and a first air suction cavity and a second air suction cavity which are independent of each other are further formed in sequence; the first air suction cavity is formed by enclosing the outer side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery; the second air suction cavity is formed by enclosing the inner side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part at the periphery; the suction volume of the compression assembly is substantially equal to the sum of the maximum volume of the first suction chamber and the maximum volume of the second suction chamber.
For example, when the first spiral portion and the second spiral portion are of a symmetrical involute type, the maximum suction volume of the first suction cavity is equal to the maximum suction volume of the second suction cavity, and the maximum suction area Asamax of the first suction cavity, that is, the cross-sectional area of the first suction cavity at the maximum suction volume, is equal to the maximum suction area Asbmax of the second suction cavity, that is, the cross-sectional area of the second suction cavity at the maximum suction volume, Asmax is 2 × Asamax. When the first spiral portion and the second spiral portion are of an asymmetric involute type, Asmax is Asamax + Asbmax.
In one possible design, the first spiral and the second spiral are of a symmetrical involute type; or the first spiral part and the second spiral part are in an asymmetric involute type; or the first helix and/or the second helix are of an archimedean helix.
In this design, the first spiral part and the second spiral part may be distributed in a symmetrical involute shape or in an asymmetrical involute shape. The first spiral part and/or the second spiral part are distributed in an Archimedes spiral line type. Of course, the profile may be in an algebraic spiral distribution, an involute profile, or a profile modification.
In one possible design, the suction port communicates with the working chamber via an internal cavity of the housing; the scroll compressor further comprises a first exhaust passage and a second exhaust passage which are independent of each other, the first compression cavity is communicated with the first exhaust port through the first exhaust passage, and the second compression cavity is communicated with the second exhaust port through the second exhaust passage.
In this design, the suction port is specifically communicated with the working chamber via the inner chamber of the housing, making the inner chamber of the housing a low back pressure configuration. So that the first compression chamber is communicated with the first exhaust port through the first exhaust passage and the second compression chamber is communicated with the second exhaust port through the second exhaust passage. The first exhaust passage and the second exhaust passage are independent of each other, are not communicated with each other, and are independent of the inner cavity of the housing.
Furthermore, the first exhaust channel is a first exhaust pipe and is communicated with a first air outlet which is arranged on the static disc and communicated with the first compression cavity; the second exhaust passage is a second exhaust pipe and is communicated with a second air outlet which is arranged on the static disc and communicated with the second compression cavity.
Further, the scroll compressor also includes a seal assembly sealing the junction of the first discharge passage with the compression assembly and the housing, and sealing the junction of the second discharge passage with the compression assembly and the housing.
In one possible design, the second compression chamber communicates with the second exhaust port via an inner chamber of the housing; the scroll compressor further comprises a first air suction passage and a first air discharge passage, the working chamber is communicated with the air suction port through the first air suction passage, and the first compression chamber is communicated with the first air discharge port through the first air discharge passage.
In the design, the second compression cavity is communicated with the second exhaust port through the inner cavity of the shell, so that the inner cavity of the shell is in a middle back pressure structure. The working chamber is communicated with the air suction port through the first air suction passage, and the first compression chamber is communicated with the first exhaust port through the first exhaust passage. The first air suction channel is independent of the inner cavity of the shell and is not communicated with the inner cavity of the shell, and the first air exhaust channel is independent of the inner cavity of the shell and is not communicated with the inner cavity of the shell.
Furthermore, the first air suction channel is a first air suction pipe and is communicated with an air suction port which is arranged on the static disc and communicated with the working cavity; the first exhaust passage is a first exhaust pipe and is communicated with a first air outlet which is arranged on the static disc and communicated with the first compression cavity.
Further, the scroll compressor also comprises a sealing assembly for sealing the connection part of the first air suction passage and the compression assembly and the shell, and sealing the connection part of the first air discharge passage and the compression assembly and the shell.
In one possible design, the first compression chamber communicates with the first exhaust port via an inner chamber of the housing; the scroll compressor further comprises a second suction passage and a second discharge passage, the working chamber is communicated with the suction port through the second suction passage, and the second compression chamber is communicated with the second discharge port through the second discharge passage.
In this design, the first compression chamber is specifically communicated with the first exhaust port via the inner chamber of the housing, so that the inner chamber of the housing is in a high back pressure configuration. The working chamber is communicated with the suction port through the second suction passage, and the second compression chamber is communicated with the second exhaust port through the second exhaust passage. The second air suction channel is independent of the inner cavity of the shell and is not communicated with the inner cavity of the shell, and the second air exhaust channel is independent of the inner cavity of the shell and is not communicated with the inner cavity of the shell.
Furthermore, the second air suction channel is a second air suction pipe and is communicated with an air suction port which is arranged on the static disc and communicated with the working cavity; the second exhaust passage is a second exhaust pipe and is communicated with a second air outlet which is arranged on the static disc and communicated with the second compression cavity.
Further, the scroll compressor further comprises a sealing assembly for sealing the connection between the second suction passage and the compression assembly and the housing, and for sealing the connection between the second discharge passage and the compression assembly and the housing.
In one possible design, the scroll compressor is a vertical compressor.
A second aspect of the present invention provides a refrigeration apparatus comprising: a scroll compressor as claimed in any one of the preceding claims.
The refrigeration equipment provided by the invention has the beneficial effects of any one of the above technical schemes due to the fact that the refrigeration equipment is provided with the scroll compressor of any one of the above technical schemes, and the details are not repeated herein.
In one possible design, the refrigeration appliance further comprises: a first condenser in communication with a first discharge port of the scroll compressor; a first throttling element communicated with the first condenser; the first evaporator is communicated with the first throttling element and is also communicated with a suction port of the scroll compressor; a second condenser in communication with a second discharge port of the scroll compressor; a second throttling element communicated with the second condenser; and the second evaporator is communicated with the second throttling element and is also communicated with a suction port of the scroll compressor.
In the design, the scroll compressor and the first condenser, the first throttling element and the first evaporator form a first group of refrigeration system, the scroll compressor and the second condenser, the second throttling element and the second evaporator form a second group of refrigeration system, and two groups of refrigeration systems which are mutually independent are adopted, namely, the refrigeration equipment realizes the multi-exhaust function realized by a plurality of scroll compressors in the related technology through one scroll compressor, the processing cost of the refrigeration equipment is reduced, the occupied space of the refrigeration equipment is also reduced, the convenience in installation of the internal parts of the refrigeration equipment is improved, because the exhaust pressures of two exhaust ports are different, the exhaust pressures reaching the first condenser and the second condenser are different, the refrigeration equipment can have double condensation temperatures and double evaporation temperatures, the cascade utilization of energy is facilitated, and the energy efficiency of the refrigeration equipment is improved. Particularly, when the displacement of the two exhaust ports is different, the amounts of the refrigerants condensed by the first condenser and the second condenser are different, and the energy efficiency of the refrigeration equipment is further improved.
In one possible design, the refrigeration appliance further comprises: the first evaporator is communicated with a suction port of the scroll compressor through the first liquid storage device, and the second evaporator is communicated with the suction port of the scroll compressor through the second liquid storage device; or the first evaporator and the second evaporator are communicated with a suction port of the scroll compressor through the third liquid storage device.
In this design, a first accumulator is provided between the first evaporator and the suction port of the scroll compressor, and a second accumulator is provided between the second evaporator and the suction port of the scroll compressor; or a third accumulator may be provided between the two evaporators and the suction port of the scroll compressor. Through the liquid refrigerant of reservoir storage, can avoid a large amount of liquid to get into scroll compressor and cause the impact to scroll compressor, influence scroll compressor's effective operation.
In one possible design, the refrigeration appliance further comprises: a first condenser in communication with a first discharge port of the scroll compressor; a first throttling element communicated with the first condenser; a second condenser in communication with a second discharge port of the scroll compressor; a second throttling element communicated with the second condenser; and the third evaporator is communicated with the first throttling element and the second throttling element, and is also communicated with a suction port of the scroll compressor.
In the design, the two condensers are arranged, so that the first condenser is communicated with the first exhaust port of the scroll compressor, the second condenser is communicated with the second exhaust port of the scroll compressor, and the first exhaust port and the second exhaust port are used for exhausting gas with different pressures, so that exhaust pressures reaching the first condenser and the second condenser are different, the refrigeration equipment can have double condensation temperatures, the cascade utilization of energy is facilitated, and the energy efficiency of the refrigeration equipment is improved. Of course, the two condensers are respectively communicated with one evaporator through throttling elements, and the heat is absorbed through concentrated evaporation.
In one possible design, the refrigeration appliance further comprises: and the third accumulator is communicated with a suction port of the scroll compressor through the third accumulator.
In this design, through set up the third reservoir between third evaporimeter and scroll compressor's the port of breathing in, through the liquid refrigerant of reservoir storage, can avoid a large amount of liquid to get into scroll compressor and cause the impact to scroll compressor, influence scroll compressor's effective operation.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a top view schematic of a scroll compressor in accordance with an embodiment of the present invention;
FIG. 2 shows a schematic top view of a scroll compressor in accordance with an embodiment of the present invention;
FIG. 3 illustrates a partial cross-sectional schematic view of a scroll compressor of one embodiment of the present invention;
FIG. 4 shows a partial cross-sectional schematic view of a scroll compressor of another embodiment of the present invention;
FIG. 5 shows a schematic view in partial cross-section of a scroll compressor of yet another embodiment of the present invention;
fig. 6 shows a schematic configuration of a refrigeration apparatus according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:
100 scroll compressor, 110 housing, 111 suction port, 112 first discharge port, 113 second discharge port, 120 compression assembly, 121 moving plate, 1211 first spiral, 122 stationary plate, 1221 spiral groove, 1222 second spiral, 1223 first discharge port, 1224 second discharge port, 123 first compression chamber, 124 second compression chamber, 125 first suction chamber, 126 second suction chamber, 130 first discharge passage, 140 second discharge passage, 150 first suction passage, 160 second suction passage, 200 refrigeration unit, 210 first condenser, 220 first throttling element, 230 second condenser, 240 second throttling element, 250 third evaporator.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A scroll compressor 100 and a refrigeration apparatus 200 according to some embodiments of the present invention are described below with reference to fig. 1 to 6.
The first embodiment is as follows:
as shown in fig. 1 and 2, a scroll compressor 100 includes: a housing 110 having an air suction port 111, a first exhaust port 112 and a second exhaust port 113 formed thereon; a compression assembly 120 including a movable plate 121 and a stationary plate 122, the stationary plate 122 having a working chamber thereon, the working chamber being partitioned during movement of the movable plate 121 relative to the stationary plate 122 to form a first compression chamber 123 and a second compression chamber 124 independent of each other; wherein the suction port 111 communicates with the working chamber, the first compression chamber 123 communicates with the first discharge port 112, the second compression chamber 124 communicates with the second discharge port 113, and the first discharge port 112 and the second discharge port 113 are used to discharge gas of different pressures.
The scroll compressor 100 provided by the invention comprises a shell 110 and a compression assembly 120, wherein the shell 110 is provided with a suction port 111, a first exhaust port 112 and a second exhaust port 113, the compression assembly 120 comprises a movable disc 121 and a fixed disc 122, the fixed disc 122 is provided with a spiral working chamber, the movable disc 121 can move in the working chamber of the fixed disc 122, a plurality of sub working chambers similar to crescent are formed in the moving process, gas is gradually compressed, and the gas is sucked through the suction port 111 communicated with the working chambers. Specifically, the working chambers are separated to form the first compression chamber 123 and the second compression chamber 124 by moving the movable platen 121 relative to the stationary platen 122, that is, when the movable platen 121 rotates relative to the stationary platen 122 to a preset angle range, the compressor can be separated to form the first compression chamber 123 and the second compression chamber 124, at this time, the two sub-working chambers are independent from each other and not communicated with each other, since the pressure in the sub-working chambers formed by separating the working chambers is greater in the area closer to the center of the stationary platen 122, the pressure in the first compression chamber 123 and the pressure in the second compression chamber 124 are different, and by communicating the first compression chamber 123 with the first exhaust port 112, the second compression chamber 124 is communicated with the second exhaust port 113, which is beneficial for the first exhaust port 112 and the second exhaust port 113 to exhaust gas with different pressures, thereby realizing double exhaust pressures of the scroll compressor 100, and eliminating the related art, need adopt a plurality of scroll compressor 100 just can realize the function of multirow pressure, save space, reduce cost, when using scroll compressor 100 to refrigerating system in addition, be favorable to connecting a plurality of heat exchangers and realize the ladder utilization of energy, the energy saving.
It should be noted that, when the movable plate 121 rotates to a predetermined angle range relative to the stationary plate 122, the volumes of the first compression chamber 123 and the second compression chamber 124 may change, but still remain relatively independent and are not communicated with each other.
Further, as shown in fig. 1 and 2, the movable plate 121 is provided with a first spiral portion 1211, the stationary plate 122 is provided with a spiral groove 1221 and a second spiral portion 1222, the spiral groove 1221 is configured as a working chamber, the second spiral portion 1222 is configured as a groove sidewall of the spiral groove 1221, and the first spiral portion 1211 extends into the spiral groove 1221 and is engaged with the second spiral portion 1222.
Specifically, the movable plate 121 has a first spiral portion 1211, the stationary plate 122 has a spiral groove 1221, i.e., a spiral groove, the second spiral portion 1222 of the stationary plate 122 forms at least a portion of the side wall of the spiral groove 1221, the spiral groove 1221 surrounds a working chamber, and the first spiral portion 1211 extends into the working chamber, moves in the working chamber, and partitions the working chamber. In the process of rotating the movable disk 121, the outer side wall and the inner side wall of the first spiral portion 1211 can be attached to the side wall of the spiral groove 1221, so that the working chamber is divided into independent crescent-shaped compression chambers, the gas is gradually pressed towards the center of the spiral groove 1221, the gas is compressed, and the gas is sucked from the end portion, located at the periphery, of the spiral groove 1221 through the suction port 111, so that the gas is sucked, compressed and discharged.
Further, the first compression chamber 123 is located closer to the central region of the spiral groove 1221 than the second compression chamber 124. The closer to the center region of the scroll groove, the greater the gas pressure in the scroll compressor 100. By further locating the first compression chamber 123 closer to the central region of the spiral-shaped groove 1221 than the second compression chamber 124, it is ensured that the gas pressure in the two compression chambers is different, such that the gas pressure in the first compression chamber 123 is greater than the gas pressure in the second compression chamber 124, thereby ensuring dual discharge pressure of the scroll compressor 100.
In a specific embodiment, as shown in fig. 1 and 2, the first compression chamber 123 is located at a central region of the spiral groove 1221, and the second compression chamber 124 is located at an outer side of the first compression chamber 123.
In this embodiment, the first compression chamber 123 is located in the center region of the spiral-shaped groove 1221 and the second compression chamber 124 is located outside the first compression chamber 123 such that the gas pressure in the first compression chamber 123 is higher than the gas pressure in the second compression chamber 124, e.g., the first compression chamber 123 is used to discharge high pressure gas and the second compression chamber 124 is used to discharge medium pressure gas, thereby achieving double discharge pressure of the scroll compressor 100. Wherein the discharge pressure of the first compression chamber 123 is defined as the discharge pressure when the first spiral portion 1211 and the second spiral portion 1222 are engaged to communicate with the first discharge port 112; the discharge pressure of the second compression chamber 124 is defined as the average pressure in the second compression chamber 124 during the initial communication between the second compression chamber 124 and the second discharge port 113.
Further, the scroll compressor 100 further includes a motor assembly for driving the movable platen 121 to move relative to the stationary platen 122.
Further, the scroll compressor 100 also includes one or more support brackets for supporting the moving and stationary discs 121 and 122.
Example two:
on the basis of the first embodiment, as shown in fig. 1 and fig. 2, the working chamber is further defined during the moving process of the moving plate 121 relative to the static plate 122, and a first suction chamber 125 and a second suction chamber 126 which are independent from each other are further formed in sequence; the first air suction cavity 125 is formed by enclosing the outer side wall of the second spiral part 1222 and the spiral groove 1221, and is located at the end of the second spiral part 1222 located at the outer periphery; the second suction chamber 126 is formed by enclosing the inner side wall of the second spiral portion 1222 and the spiral groove 1221, and is located at the end of the second spiral portion 1222 located at the outer periphery; during the rotation of the movable disk 121, the first compression chamber 123 communicates with the first suction chamber 125, and the second compression chamber 124 communicates with the second suction chamber 126.
In this embodiment, it is specifically defined that the movable plate 121 can also partition the working chamber to sequentially form a first suction chamber 125 and a second suction chamber 126 during rotation relative to the fixed plate 122, and specifically, the first suction chamber 125 is enclosed by an outer side wall of the second spiral portion 1222 and the spiral groove 1221 and is located at an end of the second spiral portion 1222 located at the outer periphery; the second suction chamber 126 is formed by enclosing the inner sidewall of the second spiral portion 1222 and the spiral groove 1221, and is located at the end of the second spiral portion 1222 located at the outer periphery, that is, the first suction chamber 125 and the second suction chamber 126 are independent from each other. Therefore, when the movable plate 121 rotates, the first compression cavity 123 can be communicated with the first suction cavity 125, and the second compression cavity 124 is communicated with the second suction cavity 126, that is, the gas in the first compression cavity 123 is provided by the first suction cavity 125, and the gas in the second compression cavity 124 is provided by the second suction cavity 126, so that the first compression cavity 123 and the second compression cavity 124 are ensured to be independent from each other in the rotation process of the movable plate 121, and the realization of double-exhaust pressure of the scroll compressor 100 is facilitated.
Further, the ratio of the volume of the second compression chamber 124 to the suction volume of the compression assembly 120 ranges from 0.374 to 0.656; wherein the suction volume of the compression assembly is the sum of the volume of the first suction chamber 125 and the volume of the second suction chamber 126.
By providing a ratio of the volume of the second compression chamber 124 to the suction volume of the compression assembly 120 of between 0.374 and 0.656, the energy efficiency of the scroll compressor 100 is advantageously increased. Wherein the volume of the second compression chamber 124 is Vm, which can be expressed as the product of the area Am of the crescent-shaped cross section of the second compression chamber 124 and the height H of the second spiral part 1222. The suction volume Vsmax of the compressing assembly 120, which by default is its maximum suction volume, may be expressed as the maximum suction area Asmax, i.e. the product of the crescent-shaped cross-sectional area of the suction cavity at maximum suction and the height H of the second spiral 1222. The maximum suction volume is actually a specific maximum suction volume and is not limited to the extension of the spiral portion.
Specifically, as shown in fig. 1 and 2, the movable plate 121 partitions the working chamber during moving relative to the fixed plate 122, and further forms a first suction chamber 125 and a second suction chamber 126 which are independent from each other; the first air suction cavity 125 is formed by enclosing the outer side wall of the second spiral part 1222 and the spiral groove 1221, and is located at the end of the second spiral part 1222 located at the outer periphery; the second suction chamber 126 is formed by enclosing the inner side wall of the second spiral portion 1222 and the spiral groove 1221, and is located at the outer peripheral end of the second spiral portion 1222; the suction volume of the compression assembly 120 is substantially equal to the sum of the maximum volume of the first suction chamber 125 and the maximum volume of the second suction chamber 126.
For example, when the first spiral portion 1211 and the second spiral portion 1222 are of a symmetrical involute shape, the maximum suction volume of the first suction cavity 125 is equal to the maximum suction volume of the second suction cavity 126, and the maximum suction area Asamax of the first suction cavity 125, that is, the cross-sectional area of the first suction cavity 125 at the maximum suction volume, is equal to the maximum suction area Asbmax of the second suction cavity 126, that is, the cross-sectional area of the second suction cavity 126 at the maximum suction volume, Asmax is 2 × Asamax. When the first spiral portion 1211 and the second spiral portion 1222 are formed in an asymmetric involute shape, Asmax is Asamax + Asbmax.
Further, the first spiral portion 1211 and the second spiral portion 1222 have a symmetrical circular involute type; or the first spiral portion 1211 and the second spiral portion 1222 have an asymmetric involute shape; or the first spiral 1211 and/or the second spiral 1222 have an archimedes spiral line shape. Of course, the profile may be in an algebraic spiral distribution, an involute profile, or a profile modification.
Example three:
on the basis of any of the above embodiments, as shown in fig. 3, the suction port 111 is further defined to communicate with the working chamber through the inner cavity of the housing 110; the scroll compressor 100 further includes first and second discharge passages 130 and 140 which are independent of each other, with the first compression chamber 123 communicating with the first discharge port 112 via the first discharge passage 130 and the second compression chamber 124 communicating with the second discharge port 113 via the second discharge passage 140.
In this embodiment, the suction port 111 is specifically communicated with the working chamber through the inner cavity of the housing 110, so that the inner cavity of the housing 110 is in a low back pressure structure. Such that the first compression chamber 123 communicates with the first discharge port 112 through the first discharge passage 130 and the second compression chamber 124 communicates with the second discharge port 113 through the second discharge passage 140. The first exhaust passage 130 and the second exhaust passage 140 are independent of each other, are not communicated with each other, and are independent of the inner cavity of the housing 110.
Further, the first exhaust passage 130 is a first exhaust pipe, and is communicated with a first air outlet 1223 of the static disc 122, which is communicated with the first compression chamber 123; second exhaust passage 140 is a second exhaust pipe communicating with second outlet port 1224 of stationary plate 122 communicating with second compression chamber 124.
Further, the scroll compressor 100 also includes a seal assembly sealing the connection of the first discharge passage 130 to the compression assembly 120, the housing 110, and the connection of the second discharge passage 140 to the compression assembly 120, the housing 110.
Example four:
on the basis of any of the above embodiments, as shown in fig. 4, the second compression chamber 124 is further defined to communicate with the second exhaust port 113 through the inner cavity of the housing 110; the scroll compressor 100 further includes a first suction passage 150 and a first discharge passage 130, the working chamber communicating with the suction port 111 via the first suction passage 150, and the first compression chamber 123 communicating with the first discharge port 112 via the first discharge passage 130.
In this embodiment, the second compression chamber 124 is in communication with the second exhaust port via the inner cavity of the housing 110, so that the inner cavity of the housing 110 is in a middle back pressure configuration. The working chamber is caused to communicate with the suction port 111 through the first suction passage 150, and the first compression chamber 123 is caused to communicate with the first discharge port 112 through the first discharge passage 130. The first air suction channel 150 is independent of the inner cavity of the housing 110 and is not communicated with the inner cavity of the housing 110, and the first air discharge channel 130 is independent of the inner cavity of the housing 110 and is not communicated with the inner cavity of the housing 110.
Further, the first air suction channel 150 is a first air suction pipe, and is communicated with an air suction port on the static disc 122, which is communicated with the working chamber; the first exhaust passage 130 is a first exhaust pipe, and is communicated with a first air outlet 1223 of the stationary plate 122, which is communicated with the first compression chamber 123.
Further, the scroll compressor 100 also includes a seal assembly sealing the connection of the first suction passage 150 to the compression assembly 120, the housing 110, and the connection of the first discharge passage 130 to the compression assembly 120, the housing 110.
Example five:
on the basis of any of the above embodiments, as shown in fig. 5, the first compression chamber 123 is further defined to communicate with the first exhaust port 112 through the inner cavity of the casing 110; the scroll compressor 100 further includes a second suction passage 160 and a second discharge passage 140, with the working chamber communicating with the suction port 111 via the second suction passage 160 and the second compression chamber 124 communicating with the second discharge port 113 via the second discharge passage 140.
In this embodiment, the first compression chamber 123 is communicated with the first exhaust port through the inner cavity of the casing 110, so that the inner cavity of the casing 110 is in a high back pressure structure. The working chamber is communicated with the suction port 111 through the second suction passage 160, and the second compression chamber 124 is communicated with the second discharge port 113 through the second discharge passage 140. The second air suction passage 160 is independent of the inner cavity of the housing 110 and is not communicated with the inner cavity of the housing 110, and the second air discharge passage 140 is independent of the inner cavity of the housing 110 and is not communicated with the inner cavity of the housing 110.
Further, the second air suction channel 160 is a second air suction pipe, and is communicated with an air suction port on the static disc 122, which is communicated with the working chamber; second exhaust passage 140 is a second exhaust pipe communicating with second outlet port 1224 of stationary plate 122 communicating with second compression chamber 124.
Further, the scroll compressor 100 also includes a seal assembly sealing the connection of the second suction passage 160 to the compression assembly 120, the housing 110, and the connection of the second discharge passage 140 to the compression assembly 120, the housing 110.
Further, the scroll compressor 100 is a vertical compressor. Nowadays, with the improvement of quality of life and the increasing importance of energy conservation and environmental protection, the multi-exhaust pressure compressor which is generated according to the trend of energy conservation realizes multi-condensation pressure by adopting a multi-exhaust structure, is widely concerned about the utilization of energy cascade, realizes the function which can be realized by adopting two compressors originally, effectively saves space and reduces the manufacturing cost. However, the present invention is applied to a rolling rotor compressor, and the scroll compressor 100 is of little concern. However, in the scroll compressor, a plurality of crescent cavities with different pressures are naturally partitioned by the principle of line meshing, and the scroll compressor is certainly simpler than a scroll rotor which needs a multi-slide sheet or multi-cylinder form.
Example six:
as shown in fig. 6, a refrigerating apparatus 200 includes: the scroll compressor 100 according to any of the above aspects. The refrigeration apparatus 200 provided by the present invention has the advantages of any one of the above technical solutions due to the scroll compressor 100 according to any one of the above technical solutions, which is not repeated herein.
In a particular embodiment, the refrigeration appliance 200 further comprises: a first condenser 210 in communication with the first discharge port 112 of the scroll compressor 100; a first throttling element 220 in communication with the first condenser 210; a first evaporator in communication with the first throttling element 220, the first evaporator also in communication with the suction port 111 of the scroll compressor 100; a second condenser 230 in communication with the second discharge port 113 of the scroll compressor 100; a second throttling element 240 in communication with the second condenser 230; and a second evaporator in communication with the second throttling element 240, the second evaporator also being in communication with the suction port 111 of the scroll compressor 100.
In this embodiment, the scroll compressor 100, the first condenser 210, the first throttling element 220, and the first evaporator form a first group of refrigeration system, the scroll compressor 100, the second condenser 230, the second throttling element 240, and the second evaporator form a second group of refrigeration system, and two groups of mutually independent refrigeration systems, that is, the refrigeration apparatus 200 realizes a multi-exhaust function realized by a plurality of scroll compressors 100 in the related art through one scroll compressor 100, thereby reducing the processing cost of the refrigeration apparatus 200, also reducing the occupied space of the refrigeration apparatus 200, and improving the convenience in installing the components in the refrigeration apparatus 200, because the exhaust pressures of two exhaust ports are different, the exhaust pressures reaching the first condenser 210 and the second condenser 230 are different, so that the refrigeration apparatus 200 has double condensing temperatures and double evaporating temperatures, which is beneficial to realize energy utilization steps, improving the energy efficiency of the refrigeration unit 200. Especially, in the case where the displacement volumes of the two discharge ports are different, the amounts of the refrigerants condensed by the first condenser 210 and the second condenser 230 are different, thereby further improving the energy efficiency of the refrigeration apparatus 200.
Further, the refrigeration apparatus 200 further includes: a first liquid storage tank and a second liquid storage tank, wherein the first evaporator is communicated with the air suction port 111 of the scroll compressor 100 through the first liquid storage tank, and the second evaporator is communicated with the air suction port 111 of the scroll compressor 100 through the second liquid storage tank; or a third accumulator, through which both the first and second evaporators communicate with the suction port 111 of the scroll compressor 100.
By providing a first accumulator between the first evaporator and the suction port 111 of the scroll compressor 100, a second accumulator is provided between the second evaporator and the suction port 111 of the scroll compressor 100; or a third accumulator may be provided between the two evaporators and the suction port 111 of the scroll compressor 100. By storing the liquid refrigerant in the liquid reservoir, it is possible to prevent a large amount of liquid from entering the scroll compressor 100 and impacting the scroll compressor 100, thereby preventing the effective operation of the scroll compressor 100 from being affected.
In another specific embodiment, as shown in fig. 6, the refrigeration apparatus 200 further includes: a first condenser 210 in communication with the first discharge port 112 of the scroll compressor 100; a first throttling element 220 in communication with the first condenser 210; a second condenser 230 in communication with the second discharge port 113 of the scroll compressor 100; a second throttling element 240 in communication with the second condenser 230; and a third evaporator 250 communicating with the first and second throttling elements 220 and 240, the third evaporator 250 also communicating with the suction port 111 of the scroll compressor 100.
In this embodiment, by providing two condensers, the first condenser 210 is communicated with the first exhaust port 112 of the scroll compressor 100, the second condenser 230 is communicated with the second exhaust port 113 of the scroll compressor 100, and the exhaust pressures reaching the first condenser 210 and the second condenser 230 are different due to the first exhaust port 112 and the second exhaust port 113 used for exhausting gas with different pressures, so that the refrigeration apparatus 200 can have double condensation temperatures, which is beneficial to realizing cascade utilization of energy and improving energy efficiency of the refrigeration apparatus 200. Of course, the two condensers are respectively communicated with one evaporator through throttling elements, and the heat is absorbed through concentrated evaporation.
Further, the refrigeration apparatus 200 further includes: the third accumulator, the third evaporator 250, communicates with the suction port 111 of the scroll compressor 100 via the third accumulator.
Through set up the third reservoir between third evaporator 250 and scroll compressor 100's the port 111 of breathing in, through the liquid refrigerant of reservoir storage, can avoid a large amount of liquid to get into scroll compressor 100 and cause the impact to scroll compressor 100, influence scroll compressor 100's effective operation.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A scroll compressor, comprising:
a housing having a suction port, a first exhaust port, and a second exhaust port thereon;
the compression assembly comprises a movable disc and a fixed disc, the fixed disc is provided with a working cavity, and the working cavity is divided by the movable disc in the process of moving relative to the fixed disc so as to form a first compression cavity and a second compression cavity which are independent from each other;
the suction port is communicated with the working cavity, the first compression cavity is communicated with the first exhaust port, the second compression cavity is communicated with the second exhaust port, and the first exhaust port and the second exhaust port are used for exhausting gas with different pressures.
2. The scroll compressor of claim 1,
the movable disc is provided with a first spiral part, the fixed disc is provided with a spiral groove and a second spiral part, the spiral groove is formed into the working cavity, the second spiral part is formed into the side wall of the spiral groove, and the first spiral part extends into the spiral groove and is meshed with the second spiral part;
the first compression chamber is closer to a central region of the spiral groove than the second compression chamber.
3. The scroll compressor of claim 2,
the first compression chamber is located in a central region of the spiral groove, and the second compression chamber is located outside the first compression chamber.
4. The scroll compressor of claim 2 or 3,
the movable disc separates the working cavity in the process of moving relative to the static disc and also sequentially forms a first air suction cavity and a second air suction cavity which are independent of each other;
the first air suction cavity is formed by enclosing the outer side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery;
the second air suction cavity is formed by enclosing the inner side wall of the second spiral part and the spiral groove and is positioned at the end part of the second spiral part positioned at the periphery;
in the rotating process of the movable disc, the first compression cavity is communicated with the first air suction cavity, and the second compression cavity is communicated with the second air suction cavity.
5. The scroll compressor of claim 4,
the ratio of the volume of the second compression chamber to the suction volume of the compression assembly ranges from 0.374 to 0.656;
wherein the suction volume of the compression assembly is the sum of the volume of the first suction cavity and the volume of the second suction cavity.
6. The scroll compressor of claim 5,
the first spiral part and the second spiral part are in a symmetrical involute type; or
The first spiral part and the second spiral part are in an asymmetric involute type; or
The first helix and/or the second helix are of an archimedean helix.
7. The scroll compressor of any one of claims 1 to 3,
the air suction port is communicated with the working cavity through the inner cavity of the shell;
the scroll compressor further comprises a first exhaust passage and a second exhaust passage which are independent of each other, the first compression cavity is communicated with the first exhaust passage, and the second compression cavity is communicated with the second exhaust passage.
8. The scroll compressor of any one of claims 1 to 3,
the second compression chamber is communicated with the second exhaust port through the inner cavity of the shell;
the scroll compressor further comprises a first suction passage and a first discharge passage, the working chamber is communicated with the suction port through the first suction passage, and the first compression chamber is communicated with the first discharge port through the first discharge passage.
9. The scroll compressor of any one of claims 1 to 3,
the first compression chamber communicates with the first exhaust port via an inner chamber of the housing;
the scroll compressor further comprises a second suction passage and a second exhaust passage, the working cavity is communicated with the suction port through the second suction passage, and the second compression cavity is communicated with the second exhaust port through the second exhaust passage.
10. The scroll compressor of any one of claims 1 to 3,
the scroll compressor is a vertical compressor.
11. A refrigeration apparatus, comprising:
a scroll compressor as claimed in any one of claims 1 to 10.
12. The refrigeration appliance according to claim 11, further comprising:
a first condenser in communication with a first discharge port of the scroll compressor;
a first throttling element in communication with the first condenser;
a first evaporator in communication with the first throttling element, the first evaporator also in communication with a suction port of the scroll compressor;
a second condenser in communication with a second discharge port of the scroll compressor;
a second throttling element in communication with the second condenser;
a second evaporator in communication with the second throttling element, the second evaporator also in communication with a suction port of the scroll compressor.
13. The refrigeration appliance according to claim 12, further comprising:
the first evaporator is communicated with a suction port of the scroll compressor through the first liquid storage device, and the second evaporator is communicated with the suction port of the scroll compressor through the second liquid storage device; or
And the first evaporator and the second evaporator are communicated with a suction port of the scroll compressor through the third liquid storage device.
14. The refrigeration appliance according to claim 11, further comprising:
a first condenser in communication with a first discharge port of the scroll compressor;
a first throttling element in communication with the first condenser;
a second condenser in communication with a second discharge port of the scroll compressor;
a second throttling element in communication with the second condenser;
a third evaporator in communication with the first throttling element and the second throttling element, the third evaporator also in communication with a suction port of the scroll compressor.
15. The refrigeration appliance according to claim 14, further comprising:
and the third liquid storage device is communicated with a suction port of the scroll compressor through the third liquid storage device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010118995.7A CN111306060A (en) | 2020-02-26 | 2020-02-26 | Scroll compressor and refrigeration equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010118995.7A CN111306060A (en) | 2020-02-26 | 2020-02-26 | Scroll compressor and refrigeration equipment |
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| CN111306060A true CN111306060A (en) | 2020-06-19 |
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| CN202010118995.7A Pending CN111306060A (en) | 2020-02-26 | 2020-02-26 | Scroll compressor and refrigeration equipment |
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| CN113418223A (en) * | 2021-05-24 | 2021-09-21 | 青岛腾远设计事务所有限公司 | Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system |
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