CN218379639U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN218379639U CN218379639U CN202222735947.XU CN202222735947U CN218379639U CN 218379639 U CN218379639 U CN 218379639U CN 202222735947 U CN202222735947 U CN 202222735947U CN 218379639 U CN218379639 U CN 218379639U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 58
- 238000007906 compression Methods 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000003507 refrigerant Substances 0.000 claims abstract description 21
- 239000013589 supplement Substances 0.000 claims description 29
- 230000001502 supplementing effect Effects 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
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Abstract
The utility model provides an air conditioning system. The air conditioning system includes: the quasi-secondary compressor comprises a high-pressure cylinder and a low-pressure cylinder; the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the first indoor heat exchanger is communicated with an air suction port of the low-pressure cylinder, and the second indoor heat exchanger is communicated with an air suction port of the high-pressure cylinder; an outdoor heat exchanger; the flash evaporator is arranged between the outdoor heat exchanger and the indoor heat exchanger, and the outdoor heat exchanger is communicated to an inlet of the flash evaporator; a first throttling device is arranged on a pipeline between the outdoor heat exchanger and the flash evaporator, a refrigerant inlet of the first indoor heat exchanger is communicated with a liquid outlet of the flash evaporator through a second throttling device, a refrigerant inlet of the second indoor heat exchanger is communicated with the liquid outlet of the flash evaporator, and a compression cavity of at least one of the high-pressure cylinder and the low-pressure cylinder is communicated with a gas outlet of the flash evaporator. According to the utility model discloses an air conditioning system can increase the system refrigeration capacity, reduces the compressor consumption, promotes the system performance.
Description
Technical Field
The utility model relates to an air conditioning technology field particularly, relates to an air conditioning system.
Background
The double-evaporation-temperature air conditioning system is provided in the prior art, in the air conditioning system, two high-temperature evaporators and two low-temperature evaporators are respectively arranged in a heat exchange channel, indoor return air successively passes through the high-temperature evaporators and the low-temperature evaporators to exchange heat, and outlets of the two evaporators are respectively connected with two independent compression cylinders of a compressor, so that the evaporation temperature of the high-temperature evaporators is higher than that of a conventional system, the system energy efficiency is improved to a certain extent, but compared with the system complexity, the system is smaller in energy efficiency improvement, lower in cost performance and higher in power consumption of the compressor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides an air conditioning system can improve system's efficiency lifting range, increases the system refrigerating output, reduces the compressor consumption, the lift system efficiency, the sexual valence ratio is higher.
In order to achieve the above object, according to an aspect of the present invention, there is provided an air conditioning system including:
the quasi-secondary compressor comprises a high-pressure cylinder and a low-pressure cylinder;
the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the first indoor heat exchanger is communicated with an air suction port of the low-pressure cylinder, and the second indoor heat exchanger is communicated with an air suction port of the high-pressure cylinder;
an outdoor heat exchanger;
the flash evaporator is arranged between the outdoor heat exchanger and the indoor heat exchanger, and the outdoor heat exchanger is communicated to an inlet of the flash evaporator;
a first throttling device is arranged on a pipeline between the outdoor heat exchanger and the flash evaporator, a refrigerant inlet of the first indoor heat exchanger is communicated with a liquid outlet of the flash evaporator through a second throttling device, a refrigerant inlet of the second indoor heat exchanger is communicated with the liquid outlet of the flash evaporator, and a compression cavity of at least one of the high-pressure cylinder and the low-pressure cylinder is communicated with a gas outlet of the flash evaporator.
Furthermore, the quasi-secondary compressor is a double-cylinder compressor, the double-cylinder compressor comprises a shell, and an exhaust port of the high-pressure cylinder and an exhaust port of the low-pressure cylinder are communicated with an inner cavity of the shell.
Furthermore, an air supplement pipeline is arranged at an air outlet of the flash evaporator, and a control valve for closing the air supplement pipeline after the pressure in a compression cavity of the high-pressure cylinder and/or the low-pressure cylinder reaches a preset pressure is arranged on the air supplement pipeline.
Furthermore, a first air supply channel communicated with the compression cavity of the low-pressure cylinder is arranged on the low-pressure cylinder, a second air supply channel communicated with the compression cavity of the high-pressure cylinder is arranged on the high-pressure cylinder, the air supply pipeline is communicated with the first air supply channel through a first branch pipe, and the air supply pipeline is communicated with the second air supply channel through a second branch pipe.
Furthermore, a middle partition plate is arranged between the high-pressure cylinder and the low-pressure cylinder, an air supplementing channel communicated with a compression cavity of the high-pressure cylinder and/or the low-pressure cylinder is arranged on the middle partition plate, and the air supplementing pipeline is communicated with the air supplementing channel.
Furthermore, a first air supplement channel communicated with a compression cavity of the low-pressure cylinder is arranged on the low-pressure cylinder, and an air supplement pipeline is communicated with the first air supplement channel; or the high-pressure cylinder is provided with a second air supplementing channel communicated with the compression cavity of the high-pressure cylinder, and the air supplementing pipeline is communicated with the second air supplementing channel.
Furthermore, a lower flange is arranged at the end part, far away from the high-pressure cylinder, of the low-pressure cylinder, a first air supplementing channel communicated with a compression cavity of the low-pressure cylinder is arranged on the lower flange, and an air supplementing pipeline is communicated with the first air supplementing channel.
Further, the quasi-secondary compressor comprises a first compressor and a second compressor which are independent, the first compressor comprises a low-pressure cylinder, the second compressor comprises a high-pressure cylinder, an air supplement pipeline is arranged at an air outlet of the flash evaporator, and the air supplement pipeline is communicated with a compression cavity of the low-pressure cylinder and/or the high-pressure cylinder.
Furthermore, the air supplementing pipeline is provided with a first branch and a second branch, the first branch is communicated with a compression cavity of the low-pressure cylinder, and the second branch is communicated with an air suction port of the high-pressure cylinder; or the first branch is communicated with the air suction port of the low-pressure cylinder, and the second branch is communicated with the compression cavity of the high-pressure cylinder; or the first branch is communicated with the compression cavity of the low-pressure cylinder, and the second branch is communicated with the compression cavity of the high-pressure cylinder.
According to an aspect of the present invention, there is provided an air conditioning system, including:
the quasi-secondary compressor comprises a high-pressure cylinder and a low-pressure cylinder;
the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger;
an outdoor heat exchanger;
a flash evaporator;
a first four-way valve;
the first port of the first four-way valve is communicated with an exhaust port of the quasi-secondary compressor, the second port of the first four-way valve is communicated with the first end of the first indoor heat exchanger, the third port of the first four-way valve is communicated with an air suction port of the low-pressure cylinder, the fourth port of the first four-way valve is communicated with the first end of the outdoor heat exchanger, the second end of the outdoor heat exchanger is communicated with one liquid flow port of the flash evaporator through a first throttling device, the second end of the first indoor heat exchanger is communicated with one liquid flow port of the flash evaporator through a second throttling device, the second indoor heat exchanger is communicated with one liquid flow port of the flash evaporator, and an air outlet of the flash evaporator is communicated with a compression cavity of the high-pressure cylinder and/or the low-pressure cylinder through an air supplementing pipeline.
The air conditioning system further comprises a second four-way valve and a third indoor heat exchanger, a first interface of the second four-way valve is communicated to an exhaust port of the quasi-secondary compressor, a second interface of the second four-way valve is communicated to a first end of the third indoor heat exchanger, a third interface of the second four-way valve is communicated to an air suction port of the high-pressure cylinder, a fourth interface of the second four-way valve is communicated to a first end of the outdoor heat exchanger, a second end of the third indoor heat exchanger is provided with a parallel pipeline, the parallel pipeline is connected to a liquid flow port of the flash evaporator, a third throttling device is arranged on one pipeline of the parallel pipeline, and a first stop valve is arranged on the other pipeline.
Further, a second stop valve is arranged on the air supply pipeline; and/or a third stop valve is arranged on a pipeline between a third interface of the second four-way valve and an air suction port of the high-pressure cylinder.
Furthermore, a bypass pipeline is arranged between the first end of the first indoor heat exchanger and a third interface of the second four-way valve, and a fourth stop valve is arranged on the bypass pipeline.
Use the technical scheme of the utility model, air conditioning system includes: the quasi-secondary compressor comprises a high-pressure cylinder and a low-pressure cylinder; the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the first indoor heat exchanger is communicated with an air suction port of the low-pressure cylinder, and the second indoor heat exchanger is communicated with an air suction port of the high-pressure cylinder; an outdoor heat exchanger; the flash evaporator is arranged between the outdoor heat exchanger and the indoor heat exchanger, and the outdoor heat exchanger is communicated to an inlet of the flash evaporator; a first throttling device is arranged on a pipeline between the outdoor heat exchanger and the flash evaporator, a refrigerant inlet of the first indoor heat exchanger is communicated with a liquid outlet of the flash evaporator through a second throttling device, a refrigerant inlet of the second indoor heat exchanger is communicated with the liquid outlet of the flash evaporator, and a compression cavity of at least one of the high-pressure cylinder and the low-pressure cylinder is communicated with a gas outlet of the flash evaporator. This air conditioning system can make the air supplement pipeline and high-pressure cylinder and/or low-pressure cylinder's compression chamber intercommunication, and the limit is compressed the limit tonifying qi, can effectively reduce system complexity, improves system's efficiency and promotes the range, increases system's refrigerating output, reduces the compressor consumption, improves the price/performance ratio, promotes system's performance.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a block diagram of an air conditioning system according to an embodiment of the present invention;
fig. 2 shows a schematic cycle diagram of an air conditioning system according to an embodiment of the present invention;
fig. 3 shows a graph of performance improvement of an air conditioning system of an embodiment of the present invention compared to a conventional dual medium pressure single stage circulating air conditioning system;
fig. 4 is a block diagram of an air conditioning system according to an embodiment of the present invention;
fig. 5 shows a block diagram of an air conditioning system according to an embodiment of the present invention;
fig. 6 shows a schematic cycle diagram of an air conditioning system according to an embodiment of the present invention;
fig. 7 shows a block diagram of an air conditioning system according to an embodiment of the present invention;
fig. 8 is a block diagram of an air conditioning system according to an embodiment of the present invention;
fig. 9 shows a schematic cycle diagram of an air conditioning system according to an embodiment of the present invention;
fig. 10 shows a schematic diagram of a refrigeration cycle of an air conditioning system according to an embodiment of the present invention; and
fig. 11 shows a schematic diagram of a heating cycle of an air conditioning system according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a quasi-two-stage compressor; 10a, a first compressor; 10b, a second compressor; 11. a high pressure cylinder; 12. a low pressure cylinder; 13. a middle partition plate; 14. a lower flange; 15. an upper flange; 20. a first indoor heat exchanger; 21. a first four-way valve; 22. a second four-way valve; 30. a second indoor heat exchanger; 31. a second throttling device; 40. an outdoor heat exchanger; 41. a first throttling device; 42. a first shut-off valve; 43. a second stop valve; 44. a third stop valve; 45. a fourth stop valve; 50. a flash evaporator; 51. an air supply pipeline; 60. a third indoor heat exchanger; 61. and a third throttling means.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 11, according to an embodiment of the present invention, an air conditioning system includes: the quasi-two-stage compressor 10, the quasi-two-stage compressor 10 includes the high-pressure cylinder 11 and the low-pressure cylinder 12; the indoor heat exchanger comprises a first indoor heat exchanger 20 and a second indoor heat exchanger 30, wherein the first indoor heat exchanger 20 is communicated with an air suction port of the low-pressure cylinder 12, and the second indoor heat exchanger 30 is communicated with an air suction port of the high-pressure cylinder 11; an outdoor heat exchanger 40; the flash evaporator 50 is arranged between the outdoor heat exchanger 40 and the indoor heat exchanger, and the outdoor heat exchanger 40 is communicated to the inlet of the flash evaporator 50; a first throttling device 41 is arranged on a pipeline between the outdoor heat exchanger 40 and the flash evaporator 50, a refrigerant inlet of the first indoor heat exchanger 20 is communicated with a liquid outlet of the flash evaporator 50 through a second throttling device 31, a refrigerant inlet of the second indoor heat exchanger 30 is communicated with a liquid outlet of the flash evaporator 50, and a compression cavity of at least one of the high-pressure cylinder 11 and the low-pressure cylinder 12 is communicated with a gas outlet of the flash evaporator 50. Wherein, the quasi-two-stage compressor is an enhanced vapor injection compressor with a middle air supplement port.
This air conditioning system can make the gas outlet of flash vessel 50 and the compression chamber intercommunication of high pressure cylinder and/or low pressure cylinder, and the limit is compressed the tonifying qi, can effectively reduce system complexity, improves system efficiency lifting range, increases system refrigerating output, reduces the compressor consumption, improves the price/performance ratio, promotes system performance.
In one embodiment, the quasi-two-stage compressor 10 is a two-cylinder compressor, and the two-cylinder compressor includes a housing, and the exhaust port of the high pressure cylinder 11 and the exhaust port of the low pressure cylinder 12 are both communicated with the inner cavity of the housing.
In this embodiment, the quasi-secondary compressor 10 is a dual-cylinder quasi-secondary compressor, and two cylinders are adopted, wherein the pressure of the refrigerant sucked by one cylinder is higher than that of the refrigerant sucked by the other cylinder, the cylinder with higher pressure of the refrigerant sucked is the high-pressure cylinder 11, the cylinder with lower pressure of the refrigerant sucked is the low-pressure cylinder 12, the two cylinders are independent of each other and are both directly communicated with the inner cavity of the housing, so that the exhaust pressures of the high-pressure cylinder 11 and the low-pressure cylinder 12 are both the same as the pressure of the inner cavity of the housing, and the difference between the two is that the suction pressure is different.
In one embodiment, the air outlet of the flash evaporator 50 is provided with an air supplement pipeline 51, and the air supplement pipeline 51 is provided with a control valve for closing the air supplement pipeline 51 after the pressure in the compression cavity of the high pressure cylinder 11 and/or the low pressure cylinder 12 reaches a preset pressure.
In this embodiment, the flash evaporator 50 performs air supplement on the compression cavity of the high pressure cylinder 11 and/or the low pressure cylinder 12 through an air supplement pipeline 51 connected to the air outlet, and when the pressure in the compression cavity reaches a preset pressure, the air supplement pipeline 51 is closed, so as to prevent the air from flowing back from the air supplement pipeline 51. The preset pressure here is a gas pressure greater than or equal to the air supplement pressure, and may also be a set pressure less than the air supplement pressure. When the preset pressure is greater than or equal to the air supply pressure, the control valve can be an electromagnetic valve or a one-way valve, when the electromagnetic valve is adopted, the air supply pressure and the pressure in the compression cavity can be detected simultaneously, and when the air supply pressure and the pressure in the compression cavity meet the requirements, the electromagnetic valve can be controlled to perform corresponding control, so that the backflow of refrigerant gas is avoided. When the control valve is a one-way valve, mechanical control can be realized, the structure is simple, the realization is convenient, the possibility of misoperation is low, and the effectiveness of the control process is high. When the preset pressure is a set pressure less than the air supply pressure, the control valve is an electromagnetic valve.
Referring to fig. 1 to 3, according to the first embodiment of the present invention, a first air supply channel communicated with the compression chamber of the low pressure cylinder 12 is provided on the low pressure cylinder 12, a second air supply channel communicated with the compression chamber of the high pressure cylinder 11 is provided on the high pressure cylinder 11, the air supply pipeline 51 is communicated with the first air supply channel through a first branch pipe, and the air supply pipeline 51 is communicated with the second air supply channel through a second branch pipe.
In this embodiment, the high pressure cylinder 11 and the low pressure cylinder 12 are respectively provided with an air supply passage, and the air supply pipeline 51 has two branch pipes, wherein the first branch pipe is communicated with the second air supply passage on the high pressure cylinder 11, and the second branch pipe is communicated with the second air supply passage on the low pressure cylinder 12. And control valves are respectively arranged on the first air supplementing channel and the second air supplementing channel to control the on-off of the corresponding air supplementing channels, so that the refrigerant on the air supplementing channels is prevented from reflowing.
Referring to fig. 1 and fig. 2 in combination, the operation of the air conditioning system of the present embodiment is as follows:
in a cooling state, the air conditioning system comprises two indoor heat exchangers, one is a high-pressure evaporator, the other is a low-pressure evaporator, low-pressure vapor with pressure Pe evaporated in the low-pressure evaporator is sucked by a low-pressure cylinder 12 of the compressor (state point 1 in fig. 2), and is mixed with the air supplement from a flash evaporator 50 while compressing (state point 1-5 process in fig. 2), until the pressure in the low-pressure cylinder 12 is higher than the gas pressure of the flash evaporator 50, the air supplement is stopped, the air supplement is discharged to a lower flange 14 after being compressed to the system exhaust pressure (as state point 2 in fig. 2), then the air supplement flows out to a cavity of a compressor shell through a high-pressure refrigerant circulation hole on the lower flange 14, the low-pressure cylinder 12, an intermediate partition plate 13 and the high-pressure refrigerant circulation hole on the high-pressure cylinder 11, and then is discharged to an outdoor heat exchanger 40 through an exhaust pipe, and is condensed into liquid through the outdoor heat exchanger 40, then enters the flash evaporator 50 after being subjected to first throttling by a first throttling device 41, the separated gas is supplemented into the compressor, and the air does not enter a suction port of the low-pressure cylinder 12 but directly enters a compression cavity, so that the refrigerant can effectively improve the cooling performance of the system.
One part of the liquid separated by the flash evaporator 50 is subjected to secondary throttling by the second throttling device 31 to a low-pressure evaporator to evaporate and prepare cold, as shown in fig. 2, compared with a common double-medium-pressure single-stage circulating system, the unit refrigerating capacity is increased (the utility model discloses the unit refrigerating capacity of circulation is q0= h1-h10, and the unit refrigerating capacity of common double-medium-pressure single-stage circulation is q0' = h1-h10', obviously, q0> q0 '), so that the system performance is effectively improved, as shown in fig. 3, through theoretical calculation, the utility model provides a circulating device which has the performance improving amplitude of about 12% higher than that of a common circulating device under different working conditions; the other part of the liquid refrigerant separated by the flash evaporator 50 flows to the high-pressure evaporator, is sucked by the high-pressure cylinder of the compressor after being evaporated to produce cold energy, is compressed and mixed with the air supplement from the flash evaporator 50 (as shown in the process 3-4-6 in fig. 2), is discharged into the cavity of the compressor shell through the middle partition plate 13 or the upper flange 15 after being compressed to the exhaust pressure of the system, is mixed with the gas discharged by the low-pressure cylinder 12, and enters the system together, so that a complete cycle process is completed.
Referring to fig. 4 in combination, according to the second embodiment of the present invention, a middle partition plate 13 is disposed between the high pressure cylinder 11 and the low pressure cylinder 12, an air supply passage communicated with the compression chamber of the high pressure cylinder 11 and/or the low pressure cylinder 12 is disposed on the middle partition plate 13, and the air supply pipeline 51 is communicated with the air supply passage.
In this embodiment, the make-up air line 51 is connected to the compression chambers of the high pressure cylinder 11 and/or the low pressure cylinder 12 through a make-up air passage formed in the intermediate partition 13, and no make-up air passage is formed in the high pressure cylinder 11 and the low pressure cylinder 12.
In this embodiment, before being replenished into the high-pressure cylinder 11 and the low-pressure cylinder 12, the intermediate-pressure gas for replenishing gas enters the gas replenishing channel of the intermediate partition plate 13 between the high-pressure cylinder 11 and the low-pressure cylinder 12 through the same gas replenishing pipeline 51, then the gas replenishing of the high-pressure cylinder 11 and the low-pressure cylinder 12 is realized through the opening and closing of the gas replenishing channel on the intermediate partition plate 13, and then the gas is discharged through compression, and the rest of the cycle is the same as that of the process in the previous embodiment.
The pipeline structure of this embodiment is simpler, and system cost is lower.
Referring to fig. 5 to 6 in combination, according to the third embodiment of the present invention, a first air supply passage communicated with the compression chamber of the low pressure cylinder 12 is provided on the low pressure cylinder 12, and the air supply pipeline 51 is communicated with the first air supply passage.
The scheme of this embodiment is basically the same as that of the first embodiment, and the difference is that, in this embodiment, the air make-up compressor is a single-cylinder air make-up structure, the gas separated by the flash evaporator 50 is only supplemented into the low-pressure cylinder 12, and the high-pressure cylinder 11 is not made-up air, compared with the system structure of the first embodiment, the system pipeline of this embodiment is relatively simple, compared with a common double-medium-pressure single-stage circulation system, because the air make-up air has a cooling effect on the low-pressure cylinder 12, the overheating loss power consumption of the low-pressure cylinder 12 can be effectively reduced, and meanwhile, the air make-up air of the low-pressure cylinder 12 effectively increases the refrigerating capacity, which is beneficial to the improvement of the system performance.
In one embodiment, the high pressure cylinder 11 is provided with a second air supply passage communicating with the compression chamber of the high pressure cylinder 11, and the air supply line 51 communicates with the second air supply passage.
Referring to fig. 7 in combination, according to the fourth embodiment of the present invention, the end of the low pressure cylinder 12 far away from the high pressure cylinder 11 is provided with a lower flange 14, the lower flange 14 is provided with a first air supply channel communicated with the compression cavity of the low pressure cylinder 12, and the air supply pipeline 51 is communicated with the first air supply channel.
The scheme of this embodiment is basically the same as the third embodiment, except that, in this embodiment, the medium-pressure gas enters the compression cavity of the low-pressure cylinder 12 through being supplemented into the cavity of the lower flange 14, then enters the compression cavity of the low-pressure cylinder 12 after being opened through the gas supplementing hole on the cavity of the lower flange 14, so as to realize the mixing of the compression and the gas supplementing at the same time, and compared with the structure form of the cavity of the lower flange 14, the power consumption loss caused by the pressure pulsation is effectively reduced, and the system performance is improved.
Referring to fig. 8 and 9 in combination, according to the fifth embodiment of the present invention, the quasi-two-stage compressor 10 includes a first compressor 10a and a second compressor 10b which are independent, the first compressor 10a includes a low pressure cylinder 12, the second compressor 10b includes a high pressure cylinder 11, an air outlet of the flash evaporator 50 is provided with an air supplement pipeline 51, and the air supplement pipeline 51 is communicated with a compression cavity of the low pressure cylinder 12 and/or the high pressure cylinder 11.
In one embodiment, the air supply line 51 has a first branch communicating with the compression chamber of the low pressure cylinder 12 and a second branch communicating with the suction port of the high pressure cylinder 11.
In one embodiment, the first branch communicates with the intake port of the low pressure cylinder 12 and the second branch communicates with the compression chamber of the high pressure cylinder 11.
In one embodiment, the first branch communicates with the compression chamber of the low pressure cylinder 12 and the second branch communicates with the compression chamber of the high pressure cylinder 11.
In this embodiment, the compressors of the system device are two independent first-stage air make-up compressors, specifically, a first compressor 10a and a second compressor 10b, wherein the first compressor 10a is a low-pressure compressor, the second compressor 10b is a high-pressure compressor, the low-pressure compressor and the high-pressure compressor operate independently, exhaust gases of the two compressors are mixed in a system pipeline, and enter the outdoor heat exchanger 40 together to cool the supercooled liquid, and then throttling is performed for circulation, and meanwhile, air make-up improves the refrigeration capacity of the system, and reduces the power consumption of the compressors.
The above-mentioned throttling means is, for example, an electronic expansion valve.
Referring to fig. 10 and 11 in combination, according to an embodiment of the present invention, an air conditioning system includes: the quasi-two-stage compressor 10 comprises a high-pressure cylinder 11 and a low-pressure cylinder 12; indoor heat exchangers including a first indoor heat exchanger 20 and a second indoor heat exchanger 30; an outdoor heat exchanger 40; a flash evaporator 50; a first four-way valve 21; the first port of the first four-way valve 21 is communicated with the exhaust port of the quasi-two-stage compressor 10, the second port is communicated with the first end of the first indoor heat exchanger 20, the third port is communicated with the suction port of the low-pressure cylinder 12, the fourth port is communicated with the first end of the outdoor heat exchanger 40, the second end of the outdoor heat exchanger 40 is communicated with one liquid flow port of the flash evaporator 50 through the first throttling device 41, the second end of the first indoor heat exchanger 20 is communicated with one liquid flow port of the flash evaporator 50 through the second throttling device 31, the second indoor heat exchanger 30 is communicated with one liquid flow port of the flash evaporator 50, and the air outlet of the flash evaporator 50 is communicated with the compression cavity of the high-pressure cylinder 11 and/or the low-pressure cylinder 12 through the air supplementing pipeline 51.
In this embodiment, through increasing the cross valve, can make this air conditioning system not only be applicable to the refrigeration operating mode, also can be applicable to the heating operating mode, and the range of application is wider, and the suitability is better.
In one embodiment, the air conditioning system further includes a second four-way valve 22 and a third indoor heat exchanger 60, a first port of the second four-way valve 22 is connected to the exhaust port of the quasi-secondary compressor 10, a second port is connected to a first end of the third indoor heat exchanger 60, a third port is connected to the suction port of the high pressure cylinder 11, a fourth port is connected to a first end of the outdoor heat exchanger 40, a second end of the third indoor heat exchanger 60 is provided with parallel pipelines which are commonly connected to one liquid flow port of the flash evaporator 50, one pipeline of the parallel pipelines is provided with a third throttling device 61, and the other pipeline is provided with a first stop valve 42.
In one embodiment, the second shut-off valve 43 is provided on the air supply line 51; and/or a third stop valve 44 is arranged on a pipeline between the third interface of the second four-way valve 22 and the suction port of the high-pressure cylinder 11.
In one embodiment, a bypass line is disposed between the first end of the first indoor heat exchanger 20 and the third connection port of the second four-way valve 22, and a fourth stop valve 45 is disposed on the bypass line.
The above-mentioned throttling means is, for example, an electronic expansion valve.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
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 (13)
1. An air conditioning system, comprising:
a quasi-two-stage compressor (10), the quasi-two-stage compressor (10) comprising a high pressure cylinder (11) and a low pressure cylinder (12);
the indoor heat exchanger comprises a first indoor heat exchanger (20) and a second indoor heat exchanger (30), the first indoor heat exchanger (20) is communicated with an air suction port of the low-pressure cylinder (12), and the second indoor heat exchanger (30) is communicated with an air suction port of the high-pressure cylinder (11);
an outdoor heat exchanger (40);
a flash evaporator (50) arranged between the outdoor heat exchanger (40) and the indoor heat exchanger, wherein the outdoor heat exchanger (40) is communicated to an inlet of the flash evaporator (50);
a first throttling device (41) is arranged on a pipeline between the outdoor heat exchanger (40) and the flash evaporator (50), a refrigerant inlet of the first indoor heat exchanger (20) is communicated with a liquid outlet of the flash evaporator (50) through a second throttling device (31), a refrigerant inlet of the second indoor heat exchanger (30) is communicated with a liquid outlet of the flash evaporator (50), and a compression cavity of at least one of the high-pressure cylinder (11) and the low-pressure cylinder (12) is communicated with a gas outlet of the flash evaporator (50).
2. Air conditioning system according to claim 1, characterized in that the quasi-secondary compressor (10) is a twin-cylinder compressor comprising a housing, the discharge of the high-pressure cylinder (11) and the discharge of the low-pressure cylinder (12) both communicating with the inner cavity of the housing.
3. Air conditioning system according to claim 2, wherein the air outlet of the flash evaporator (50) is provided with an air supplement pipeline (51), and the air supplement pipeline (51) is provided with a control valve for closing the air supplement pipeline (51) after the pressure in the compression cavity of the high-pressure cylinder (11) and/or the low-pressure cylinder (12) reaches a preset pressure.
4. Air conditioning system according to claim 3, wherein the low pressure cylinder (12) is provided with a first air make-up channel communicating with the compression chamber of the low pressure cylinder (12), the high pressure cylinder (11) is provided with a second air make-up channel communicating with the compression chamber of the high pressure cylinder (11), the air make-up line (51) communicates with the first air make-up channel through a first branch line, and the air make-up line (51) communicates with the second air make-up channel through a second branch line.
5. Air conditioning system according to claim 3, characterized in that a middle partition (13) is arranged between the high pressure cylinder (11) and the low pressure cylinder (12), in that a charge air channel is arranged on the middle partition (13) and communicates with the compression chamber of the high pressure cylinder (11) and/or the low pressure cylinder (12), and in that the charge air line (51) communicates with the charge air channel.
6. Air conditioning system according to claim 3, characterized in that said low pressure cylinder (12) is provided with a first make-up air passage communicating with the compression chamber of said low pressure cylinder (12), said make-up air line (51) communicating with said first make-up air passage; or a second air supplementing channel communicated with a compression cavity of the high-pressure cylinder (11) is arranged on the high-pressure cylinder (11), and the air supplementing pipeline (51) is communicated with the second air supplementing channel.
7. Air conditioning system according to claim 3, characterized in that the end of the low pressure cylinder (12) remote from the high pressure cylinder (11) is provided with a lower flange (14), said lower flange (14) being provided with a first air make-up channel communicating with the compression chamber of the low pressure cylinder (12), said air make-up line (51) being in communication with said first air make-up channel.
8. Air conditioning system according to claim 1, characterized in that said quasi-two-stage compressor (10) comprises a first compressor (10 a) and a second compressor (10 b) which are independent, said first compressor (10 a) comprising said low-pressure cylinder (12) and said second compressor (10 b) comprising said high-pressure cylinder (11), the outlet of said flash evaporator (50) being provided with an air-supply line (51), said air-supply line (51) being in communication with the compression chamber of said low-pressure cylinder (12) and/or of said high-pressure cylinder (11).
9. Air conditioning system according to claim 8, characterized in that said air supply line (51) has a first branch communicating with the compression chamber of said low pressure cylinder (12) and a second branch communicating with the suction port of said high pressure cylinder (11); or the first branch is communicated with an air suction port of the low-pressure cylinder (12), and the second branch is communicated with a compression cavity of the high-pressure cylinder (11); or the first branch is communicated with the compression cavity of the low-pressure cylinder (12), and the second branch is communicated with the compression cavity of the high-pressure cylinder (11).
10. An air conditioning system, comprising:
a quasi-two-stage compressor (10), said quasi-two-stage compressor (10) comprising a high pressure cylinder (11) and a low pressure cylinder (12);
an indoor heat exchanger including a first indoor heat exchanger (20) and a second indoor heat exchanger (30);
an outdoor heat exchanger (40);
a flash evaporator (50);
a first four-way valve (21);
a first port of the first four-way valve (21) is communicated with an exhaust port of the quasi-two-stage compressor (10), a second port is communicated with a first end of the first indoor heat exchanger (20), a third port is communicated with an air suction port of the low-pressure cylinder (12), a fourth port is communicated with a first end of the outdoor heat exchanger (40), a second end of the outdoor heat exchanger (40) is communicated with one liquid flow port of the flash evaporator (50) through a first throttling device (41), a second end of the first indoor heat exchanger (20) is communicated with one liquid flow port of the flash evaporator (50) through a second throttling device (31), the second indoor heat exchanger (30) is communicated with one liquid flow port of the flash evaporator (50), and an air outlet port of the flash evaporator (50) is communicated with a compression cavity of the high-pressure cylinder (11) and/or the low-pressure cylinder (12) through an air supplementing pipeline (51).
11. Air conditioning system according to claim 10, further comprising a second four-way valve (22) and a third indoor heat exchanger (60), wherein a first port of the second four-way valve (22) is connected to the exhaust port of the quasi-two-stage compressor (10), a second port is connected to a first end of the third indoor heat exchanger (60), a third port is connected to the suction port of the high-pressure cylinder (11), a fourth port is connected to a first end of the outdoor heat exchanger (40), a second end of the third indoor heat exchanger (60) is provided with parallel pipelines which are commonly connected to one liquid flow port of the flash evaporator (50), one pipeline of the parallel pipelines is provided with a third throttling device (61), and the other pipeline is provided with a first stop valve (42).
12. Air conditioning system according to claim 11, wherein a second shut-off valve (43) is provided on the bleed line (51); and/or a third stop valve (44) is arranged on a pipeline between a third interface of the second four-way valve (22) and the suction port of the high-pressure cylinder (11).
13. Air conditioning system according to claim 11, wherein a bypass line is provided between the first end of the first indoor heat exchanger (20) and the third connection of the second four-way valve (22), and a fourth stop valve (45) is provided on the bypass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222735947.XU CN218379639U (en) | 2022-10-17 | 2022-10-17 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222735947.XU CN218379639U (en) | 2022-10-17 | 2022-10-17 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218379639U true CN218379639U (en) | 2023-01-24 |
Family
ID=84930043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222735947.XU Active CN218379639U (en) | 2022-10-17 | 2022-10-17 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218379639U (en) |
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2022
- 2022-10-17 CN CN202222735947.XU patent/CN218379639U/en active Active
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