Economizer, compressor assembly and air conditioning system

Abstract

The utility model provides an economizer, a compressor assembly and an air conditioning system. The economizer comprises a shell; a separator; a first heat exchanger; a second heat exchanger. According to the economizer, the compressor assembly and the air conditioning system, two air supply areas can be formed by arranging the first air supply cavity and the second air supply cavity, and a throttled air-liquid mixture firstly enters the first air supply cavity to be heated to form first air supply pressure; when the compressor is connected in series, part of the gas-liquid mixture is throttled again through the liquid passing hole in the partition plate and then enters the second gas supply cavity to be heated to form second gas supply pressure, so that the economizer can provide two kinds of gas supply pressure, and then gas supply can be conducted on different compressors in the compressors connected in series; the problem that in the prior art, only one compressor in the series compressors can be supplied with air is solved, and the energy efficiency of the air conditioning system is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas replenishment technology, and in particular to an economizer, compressor assembly and air conditioning system. Background Technology

[0002] To achieve energy conservation and emission reduction, many regions in northern China currently use water-source heat pump air conditioning chillers for heating in winter. Because the groundwater temperature differs significantly from the preset heating water temperature in winter, a single compressor in this heat pump air conditioning chiller cannot achieve a high pressure ratio; therefore, two compressors are typically connected in series. To improve the unit's operating efficiency, conventional units usually have an economizer to replenish gas to the compressor's intermediate pressure range. However, for water-source heat pump air conditioning chillers with two compressors connected in series, the significant difference in the operating pressures of the two compressors prevents the conventional economizer from simultaneously replenishing gas to both compressors, resulting in low unit efficiency. Utility Model Content

[0003] To address the technical problem in existing technologies where the economizer cannot simultaneously supply gas to two compressors connected in series, thus affecting the unit's energy efficiency, an economizer, compressor assembly, and air conditioning system are provided that utilize two gas supply chambers to provide two different gas supply pressures to improve the unit's energy efficiency.

[0004] An economical device, comprising:

[0005] case;

[0006] A partition is disposed inside the housing, and the partition divides the interior of the housing into a first air supply chamber and a second air supply chamber. The first air supply chamber is provided with a liquid inlet and a first air supply port, and the second air supply chamber is provided with a liquid outlet and a second air supply port. The partition is provided with a liquid passage hole, and the first air supply chamber and the second air supply chamber are connected through the liquid passage hole.

[0007] The first heat exchanger is disposed in the first air supply chamber and has a first inlet and a first outlet;

[0008] The second heat exchanger is disposed in the second air supply chamber and has a second inlet and a second outlet.

[0009] The first inlet constitutes the heating inlet of the economizer, and the first outlet is connected to the second inlet, with the second outlet constituting the heating outlet of the economizer.

[0010] The first air inlet can provide a first air supply pressure, and the second air inlet can provide a second air supply pressure, wherein the first air supply pressure is greater than the second air supply pressure.

[0011] The economizer also includes a third heat exchanger, which is disposed in the first air supply chamber and located below the first heat exchanger. The third heat exchanger has a third inlet and a third outlet. The third inlet is connected to the second outlet, and the third outlet constitutes the heating outlet of the economizer.

[0012] The economizer also includes a fourth heat exchanger, which is disposed in the second air supply chamber and located below the second heat exchanger. The fourth heat exchanger has a fourth inlet and a fourth outlet, the fourth inlet being connected to the second outlet and the fourth outlet being connected to the third inlet.

[0013] The economizer also includes a first baffle assembly, which is disposed in the first air replenishment chamber, and the first baffle assembly and the inner wall of the first air replenishment chamber together form a first baffle channel. The liquid inlet and the first air replenishment port are connected through the first baffle channel.

[0014] The first baffle assembly includes a first baffle located on one side of the partition, and the first baffle, the partition, and the inner wall of the corresponding first air supply chamber together form a first exhaust space. The first heat exchanger is located in the first exhaust space, and the first air supply port is connected to the first exhaust space.

[0015] The economizer also includes a first filter structure, which is disposed within the first exhaust space and located between the first heat exchanger and the first air inlet.

[0016] The first baffle assembly further includes a second baffle, which is disposed on the side wall of the housing away from the partition and is located above the liquid inlet, with the liquid outlet pointing downwards from the second baffle.

[0017] The first baffle assembly further includes a third baffle, which is arranged parallel to the partition. The third baffle is located between the end of the second baffle near the partition and the first baffle. A first air passage gap is formed between the third baffle and the end of the second baffle near the partition, and a second air passage gap is formed between the third baffle and the first baffle.

[0018] The first baffle assembly further includes a fourth baffle, which is disposed below the third baffle and is located above the liquid surface in the first air replenishment chamber.

[0019] The fourth baffle is provided with a drip hole; and / or the fourth baffle is arranged horizontally or inclined relative to the liquid surface in the first air replenishment chamber.

[0020] The economizer also includes a second baffle assembly disposed within the second air supply chamber, and the second baffle assembly and the first baffle assembly are mirror-symmetrical with respect to the partition.

[0021] The second baffle assembly includes a fifth baffle located on one side of the partition. The fifth baffle, the partition, and the inner wall of the corresponding second air supply chamber together form a second exhaust space. The second heat exchanger is located in the second exhaust space, and the second air supply port is connected to the second exhaust space.

[0022] The economizer also includes a second filter structure, which is disposed within the second exhaust space and located between the second heat exchanger and the second air inlet.

[0023] The economizer also includes a sixth baffle. The liquid outlet is located on the bottom surface of the second air replenishment chamber. The sixth baffle is disposed on the bottom surface of the second air replenishment chamber and is located between the liquid passage hole and the liquid outlet.

[0024] The first heat exchanger is a finned heat exchanger; and / or, the second heat exchanger is a finned heat exchanger.

[0025] A compressor assembly includes at least two compressors and the aforementioned economizer, all of the compressors are connected in series, and at least one of the compressors constitutes a high-pressure section of the compressor assembly, at least one of the compressors constitutes a low-pressure section of the compressor assembly, a first air supply port is connected to the high-pressure section, and a second air supply port is connected to the low-pressure section.

[0026] An air conditioning system includes the economizer or the compressor assembly described above.

[0027] The economizer, compressor assembly, and air conditioning system provided by this utility model can form two types of air supply zones by setting a first air supply chamber and a second air supply chamber. The gas-liquid mixture after throttling first enters the first air supply chamber and is heated to form a first air supply pressure. Part of the gas-liquid mixture is throttled again through the liquid passage hole on the partition and then enters the second air supply chamber to be heated to form a second air supply pressure. This allows the economizer to provide two types of air supply pressure, thereby enabling air supply to different compressors in a series-connected compressor system. This overcomes the problem in the prior art that air supply can only be provided to one compressor in a series-connected compressor system, thus improving the energy efficiency of the air conditioning system. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of the economizer provided in this embodiment of the utility model;

[0029] Figure 2 A side view of the economizer provided in an embodiment of this utility model;

[0030] Figure 3 A top view of the economizer provided in an embodiment of this utility model;

[0031] Figure 4 A schematic diagram of the structure of the finned heat exchanger provided in this embodiment of the utility model;

[0032] In the picture:

[0033] 1. Shell; 2. Partition; 11. First air supply chamber; 12. Second air supply chamber; 13. Liquid inlet; 14. First air supply port; 15. Liquid outlet; 16. Second air supply port; 21. Liquid passage hole; 3. First heat exchanger; 31. First inlet; 32. First outlet; 4. Second heat exchanger; 41. Second inlet; 42. Second outlet; 5. Third heat exchanger; 51. Third inlet; 52. Third outlet; 6. Fourth heat exchanger; 61. Fourth inlet; 62. Fourth outlet; 71. First baffle channel; 72. First baffle; 17. First exhaust space; 81. First filter structure; 73. Second baffle; 74. Third baffle; 75. Fourth baffle; 92. Fifth baffle; 18. Second exhaust space; 82. Second filter structure; 93. Sixth baffle. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] To achieve energy conservation and emission reduction, many regions in northern China currently use water-source heat pump air conditioning chillers for heating in winter. Because the groundwater temperature differs significantly from the preset heating water temperature in winter, a single compressor in this heat pump air conditioning chiller cannot achieve a high pressure ratio; therefore, two compressors are typically connected in series. To improve the unit's operating efficiency, conventional units usually have an economizer to replenish gas to the compressor's intermediate pressure range. However, for water-source heat pump air conditioning chillers with two compressors connected in series, the significant difference in the operating pressures of the two compressors prevents the conventional economizer from simultaneously replenishing gas to both compressors, resulting in low unit efficiency.

[0040] Therefore, this application provides a method such as Figures 1 to 4The economizer shown includes: a housing 1; a partition 2 disposed within the housing 1, dividing the interior of the housing 1 into a first air supply chamber 11 and a second air supply chamber 12. The first air supply chamber 11 has a liquid inlet 13 and a first air supply port 14, and the second air supply chamber 12 has a liquid outlet 15 and a second air supply port 16. The partition 2 has a liquid passage hole 21, and the first air supply chamber 11 and the second air supply chamber 12 are connected through the liquid passage hole 21; and a first heat exchanger 3 disposed within the first air supply chamber 11, having a first inlet 31 and a first outlet 32. Both outlet 31 and the first outlet 32 ​​are located outside the housing 1; the second heat exchanger 4 is disposed in the second air supply chamber 12, and the second heat exchanger 4 has a second inlet 41 and a second outlet 42, both of which are located outside the housing 1; the first inlet 31 constitutes the heating inlet of the economizer, the first outlet 32 ​​communicates with the second inlet 41, and the second outlet 42 constitutes the heating outlet of the economizer; the first air supply port 14 can provide a first air supply pressure, and the second air supply port 16 can provide a second air supply pressure, wherein the first air supply pressure is greater than the second air supply pressure. By setting up a first air supply chamber 11 and a second air supply chamber 12, two air supply zones can be formed. After throttling, the gas-liquid mixture first enters the first air supply chamber 11 and is heated to form a first air supply pressure. Part of the gas-liquid mixture will be throttled again through the liquid passage hole 21 on the partition plate 2, and then enter the second air supply chamber 12 to be heated to form a second air supply pressure. This allows the economizer to provide two air supply pressures, thereby enabling air supply to different compressors in a series-connected compressor system. This overcomes the problem in the prior art that air supply can only be provided to one compressor in a series-connected compressor system, and improves the energy efficiency of the air conditioning system.

[0041] When using the economizer, the refrigerant that has undergone throttling and flashing is fed into the first gas replenishment chamber 11 through the liquid inlet 13. After throttling, the refrigerant forms a gas-liquid two-phase coexistence state. When it enters the first gas replenishment chamber 11, gas-liquid separation occurs. At the same time, the refrigerant from the heating inlet and the condenser that has not undergone throttling is introduced into the first heat exchanger 3. The first heat exchanger 3 can heat the refrigerant in the first gas replenishment chamber 11, increasing the amount of gaseous refrigerant in the first gas replenishment chamber 11 and forming the first gas replenishment pressure. Meanwhile, the liquid refrigerant in the first gas replenishment chamber 11 enters the second gas replenishment chamber 12 through the liquid passage hole 21 on the partition 2. Because the flow area of ​​the liquid passage hole 21 is small and the pressure in the first gas replenishment chamber 11 is large, the liquid refrigerant is throttled and flashed again at the liquid passage hole 21. The formation of a gas-liquid two-phase coexistence further reduces the temperature of the refrigerant. Simultaneously, the refrigerant passing through the first heat exchanger 3 flows into the second heat exchanger 4, allowing the second heat exchanger 4 to heat the refrigerant within the second gas supply chamber 12. This increases the amount of modified atmosphere refrigerant in the second gas supply chamber 12, creating a second gas supply pressure. Finally, the liquid refrigerant that has not yet turned into a gaseous state in the second gas supply chamber 12 is discharged from the liquid outlet 15, while the refrigerant that has undergone heat exchange in the second heat exchanger 4 is discharged from the second outlet 42, ultimately flowing into the heat exchange cycle where the economizer is located. At this point, the first gas supply pressure is higher than the second gas supply pressure. Therefore, when at least two compressors are used in series, the first gas supply pressure can supply gas to the compressor with higher pressure, and the second gas supply pressure can supply gas to the compressor with lower pressure.

[0042] To further improve the heating effect of the refrigerant in the first gas replenishment chamber 11, the economizer further includes a third heat exchanger 5. The third heat exchanger 5 is disposed within the first gas replenishment chamber 11 and is located below the first heat exchanger 3. The third heat exchanger 5 has a third inlet 51 and a third outlet 52. The third inlet 51 communicates with the second outlet 42, and the third outlet 52 constitutes the heating outlet of the economizer. The third heat exchanger 5 is used to further heat the refrigerant in the first gas replenishment chamber 11. The refrigerant that has completed heat exchange in the second heat exchanger 4 is introduced into the third heat exchanger 5 for heating, ensuring the heating effect of the second heat exchanger 4 and improving the heating effect of the refrigerant in the first gas replenishment chamber 11. In particular, the third heat exchanger 5 is located below the first heat exchanger 3. At this time, the third heat exchanger 5 is closer to the liquid refrigerant in the first gas replenishment chamber 11. The temperature of the liquid refrigerant is low. Even if the third heat exchanger 5 obtains refrigerant from the second heat exchanger 4, it can still ensure the heating effect of the liquid refrigerant and increase the gas replenishment pressure in the first gas replenishment chamber 11.

[0043] Furthermore, the economizer also includes a fourth heat exchanger 6, which is disposed within the second gas replenishment chamber 12 and located below the second heat exchanger 4. The fourth heat exchanger 6 has a fourth inlet 61 and a fourth outlet 62. The fourth inlet 61 communicates with the second outlet 42, and the fourth outlet 62 communicates with the third inlet 51. The fourth heat exchanger 6 is used to further heat the refrigerant in the second gas replenishment chamber 12. Simultaneously, the refrigerant that has completed heat exchange in the second heat exchanger 4 is first introduced into the fourth heat exchanger 6 for heating before being sent to the second heat exchanger 4. Heating is carried out in the third heat exchanger 5, which ensures the heating effect of the second heat exchanger 4, as well as the heating effect of the fourth heat exchanger 6 on the refrigerant in the second gas replenishment chamber 12 and the heating effect of the third heat exchanger 5 on the refrigerant in the first gas replenishment chamber 11. In particular, the fourth heat exchanger 6 is located below the second heat exchanger 4. At this time, the fourth heat exchanger 6 is closer to the liquid refrigerant in the second gas replenishment chamber 12. The temperature of the liquid refrigerant is low. Even if the fourth heat exchanger 6 obtains refrigerant from the second heat exchanger 4, it can still ensure the heating effect on the liquid refrigerant and increase the gas replenishment pressure in the second gas replenishment chamber 12.

[0044] It should be noted that, Figure 1 Partial cross-sections were performed at inlet 13, first inlet 31, second outlet 42, third outlet 52, and fourth inlet 61 to facilitate the depiction of the specific structures; Figure 2 and Figure 3 In the accompanying diagram, the numbers in parentheses only indicate that the projections of the corresponding structures overlap in the viewing direction of this diagram, and do not mean that the two structures are located at the same position; for example, in Figure 2 In the text 31(42), it only indicates that the first inlet 31 and the second outlet 42 are at the same height, and similarly in Figure 3 The 32(51) in the text only indicates that the first exit 32 and the third entrance 51 are on the same vertical line.

[0045] The economizer also includes a first baffle assembly disposed within the first gas replenishment chamber 11. The first baffle assembly and the inner wall of the first gas replenishment chamber 11 together form a first baffle channel 71. The liquid inlet 13 and the first gas replenishment port 14 are connected through the first baffle channel 71. By utilizing the baffle assembly to form a baffle channel within the first gas replenishment chamber 11, the gas-liquid separation effect of the refrigerant is further enhanced. The baffle flow of the refrigerant separates larger diameter refrigerant droplets, which eventually fall below the first gas replenishment chamber 11. The gaseous refrigerant can continue to flow along the baffle channel and be heated by the first heat exchanger 3, and finally discharged from the first gas replenishment port 14. This ensures the dryness of the refrigerant discharged from the first gas replenishment port 14 and improves the gas replenishment reliability of the economizer.

[0046] High-temperature heat pump units have a large temperature difference between condensing and evaporating temperatures. The high-temperature refrigerant flowing out of the condenser needs to flash to lower its temperature. The amount of gaseous refrigerant generated by flashing is relatively large, which can easily cause liquid carryover in the economizer's gas supply. The first baffle assembly includes a first baffle 72, which is located on one side of the partition 2. The first baffle 72, the partition 2, and the inner wall of the corresponding first gas supply chamber 11 together form a first exhaust space 17. The first heat exchanger 3 is located in the first exhaust space 17, and the first gas supply port 14 is connected to the first exhaust space 17. By utilizing the formed first exhaust space 17, the gaseous refrigerant needs to enter the first exhaust space 17 before it can flow to the first gas supply port 14. During this flow, the gaseous refrigerant carries liquid droplets due to its high flow velocity. At this time, the refrigerant droplets carried in the gaseous refrigerant are heated and eliminated by the first heat exchanger 3, thus eliminating the risk of liquid carryover in the gas supply.

[0047] The economizer also includes a first filter structure 81, which is disposed within the first exhaust space 17 and located between the first heat exchanger 3 and the first gas inlet 14. The first filter structure 81 further separates the gas-liquid two-phase refrigerant, improving the refrigerant dryness at the first gas inlet 14 and enhancing the reliability of the economizer's gas supply. Simultaneously, the first baffle assembly can control the flow rate of the gaseous refrigerant. To ensure separation efficiency, the flow rate of the gaseous refrigerant passing through the gas-liquid filter screen is V≤2.0m / s and V≥0.2m / s, preferably 0.7m / s. If the flow rate is too high, the first filter screen cannot adsorb droplets; if the flow rate is too low, the gas carrying droplets bypasses the first filter screen without collision separation. Therefore, the flow rate of the gaseous refrigerant in the baffle channel is controlled within 3m / s. If the flow rate is too high, the gaseous refrigerant carrying droplets will also collide violently with the inner wall of the shell 1, forming more dispersed small droplets and increasing the filtration difficulty of the first filter screen.

[0048] The first baffle assembly further includes a second baffle 73, which is disposed on the side wall of the housing 1 away from the partition 2 and located above the liquid inlet 13. The liquid outlet direction of the liquid inlet 13 points below the second baffle 73. The second baffle 73 blocks the gas-liquid two-phase refrigerant fed into the liquid inlet 13, forcing the gas-liquid two-phase refrigerant to deflect, thereby achieving the separation of gaseous and liquid refrigerant. The gaseous refrigerant can bypass the second baffle 73 and flow upward, while the liquid refrigerant is blocked by the second baffle 73 and flows to the bottom of the first gas replenishment chamber 11, reducing the liquid refrigerant content in the gaseous refrigerant and facilitating the heating of the gaseous refrigerant by the first heat exchanger 3, thereby ensuring the reliability of gas replenishment for the economizer.

[0049] The first baffle assembly further includes a third baffle 74, which is arranged parallel to the partition 2. The third baffle 74 is located between the end of the second baffle 73 near the partition 2 and the first baffle 72. A first gas passage gap is formed between the third baffle 74 and the end of the second baffle 73 near the partition 2, and a second gas passage gap is formed between the third baffle 74 and the first baffle 72. The third baffle 74 further increases the flow path and number of deflections of the refrigerant, thereby improving the gas-liquid separation effect of the refrigerant. The first and second gas passage gaps ensure reliable refrigerant flow. Preferably, the third baffle 74 is vertically arranged, and the upper and lower ends of the third baffle 74 are spaced from the side wall of the corresponding first air supply chamber 11. The refrigerant flows through the first air passage, the distance between the upper end of the third baffle 74 and the side wall of the first air supply chamber 11, and the second air passage to the first exhaust space 17. The distance between the lower end of the third baffle 74 and the side wall of the first air supply chamber 11 allows the liquid refrigerant to flow directly towards the partition 2, preparing for the refrigerant to flow into the second air supply chamber 12, thus ensuring the reliability of the economizer.

[0050] The first baffle assembly also includes a fourth baffle 75, which is disposed below the third baffle 74 and located above the liquid surface in the first gas replenishment chamber 11. The fourth baffle 75 further restricts the flow path of the refrigerant, preventing the gaseous refrigerant from impacting the liquid surface of the liquid refrigerant and entraining droplets again, thus ensuring the reliability of the gas replenishment of the economizer.

[0051] The fourth baffle 75 is provided with drip holes. The refrigerant will generate droplets in the baffle channel. After the droplets fall onto the fourth baffle 75, they can drip onto the surface of the liquid refrigerant through the drip holes, avoiding splashing of the liquid refrigerant and ensuring the reliability of the refrigerant supply.

[0052] The fourth baffle 75 is inclined relative to the liquid surface in the first gas replenishment chamber 11. The inclined fourth baffle 75 is used to transport the droplets falling on the fourth baffle 75 to the liquid surface of the liquid refrigerant, avoiding splashing of the liquid refrigerant and ensuring the reliability of gas replenishment for the economizer.

[0053] Alternatively, the fourth baffle 75 is set horizontally, in which case the fourth baffle 75 is parallel to the liquid surface in the first gas replenishment chamber 11. The fourth baffle 75 does not have a lowest point that affects the allowable height of the liquid surface, thereby increasing the storage capacity of liquid refrigerant and reducing the volume of the economizer and space occupation.

[0054] The economizer also includes a second baffle assembly, which is disposed in the second gas supply chamber 12. The second baffle assembly and the first baffle assembly are mirror-symmetrical with respect to the partition 2. The second baffle assembly also forms a baffle channel in the second gas supply chamber 12, so that the gas-liquid two-phase refrigerant that flashes through the liquid passage 21 can be reliably separated, thereby improving the dryness of the gaseous refrigerant at the second gas supply port 16 and ensuring the reliability of gas supply to the economizer.

[0055] The second baffle assembly includes a fifth baffle 92, which is located on one side of the partition 2. The fifth baffle 92, the partition 2, and the inner wall of the corresponding second air supply chamber 12 together form a second exhaust space 18. The second heat exchanger 4 is located in the second exhaust space 18, and the second air supply port 16 is connected to the second exhaust space 18. By utilizing the formed second exhaust space 18, the gaseous refrigerant needs to enter the second exhaust space 18 before it can flow to the second air supply port 16. During this flow, the refrigerant droplets carried in the gaseous refrigerant will be heated and eliminated by the second heat exchanger 4, thus eliminating the risk of liquid carryover during air supply.

[0056] The economizer also includes a second filter structure 82, which is disposed in the second exhaust space 18 and located between the second heat exchanger 4 and the second air inlet 16. The second filter structure 82 is used to further separate the gas and liquid refrigerant, improve the refrigerant dryness at the second air inlet 16, and improve the air supply reliability of the economizer.

[0057] Since the liquid outlet 15 is located inside the second gas replenishment chamber 12, in order to prevent the liquid refrigerant from flowing directly to the liquid outlet 15 and thus failing to be reliably heated and separated, the economizer also includes a sixth baffle 93. The liquid outlet 15 is located on the bottom surface of the second gas replenishment chamber 12, and the sixth baffle 93 is located on the bottom surface of the second gas replenishment chamber 12, and the sixth baffle 93 is located between the liquid passage hole 21 and the liquid outlet 15.

[0058] The first heat exchanger 3 is a finned heat exchanger, which includes a distribution pipe, a collector pipe, multiple heat exchange tubes, and multiple fins. One end of the heat exchange tube is connected to the distribution pipe, and the other end is connected to the collector pipe. All heat exchange tubes are arranged in parallel, and all fins are arranged in parallel along the length of the heat exchange tubes. The refrigerant can be distributed and evenly fed into all heat exchange tubes through the distribution pipe. The heat exchange tubes exchange heat with the refrigerant outside the tubes through the fins, and then the refrigerant is discharged after being collected through the collector pipe, thus completing the flow of refrigerant in the finned heat exchanger.

[0059] The second heat exchanger 4, the third heat exchanger 5, and the fourth heat exchanger 6 can all be finned heat exchangers.

[0060] A compressor assembly includes at least two compressors and the aforementioned economizer. All the compressors are connected in series, and at least one of the compressors constitutes the high-pressure section of the compressor assembly, and at least one of the compressors constitutes the low-pressure section of the compressor assembly. A first air supply port 14 is connected to the high-pressure section, and a second air supply port 16 is connected to the low-pressure section. Different air supply pressures are provided through the first air supply port 14 and the second air supply port 16, thereby achieving the purpose of supplying air to the compressors under different operating conditions in the compressor assembly, improving the working efficiency and energy efficiency of the compressor assembly.

[0061] An air conditioning system includes the economizer or the compressor assembly described above.

[0062] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An economical device, characterized in that: include: Shell (1); A partition (2) is disposed inside the housing (1) and the partition (2) divides the interior of the housing (1) into a first air supply chamber (11) and a second air supply chamber (12). The first air supply chamber (11) is provided with a liquid inlet (13) and a first air supply port (14). The second air supply chamber (12) is provided with a liquid outlet (15) and a second air supply port (16). The partition (2) is provided with a liquid passage hole (21). The first air supply chamber (11) and the second air supply chamber (12) are connected through the liquid passage hole (21). The first heat exchanger (3) is disposed in the first air supply chamber (11) and has a first inlet (31) and a first outlet (32); The second heat exchanger (4) is disposed in the second air supply chamber (12) and has a second inlet (41) and a second outlet (42); The first inlet (31) constitutes the heating inlet of the economizer, the first outlet (32) is connected to the second inlet (41), and the second outlet (42) constitutes the heating outlet of the economizer; The first air inlet (14) can provide a first air supply pressure, and the second air inlet (16) can provide a second air supply pressure. The first air supply pressure is greater than the second air supply pressure.

2. The economic device according to claim 1, characterized in that: The economizer also includes a third heat exchanger (5), which is disposed in the first air supply chamber (11) and located below the first heat exchanger (3). The third heat exchanger (5) has a third inlet (51) and a third outlet (52). The third inlet (51) is connected to the second outlet (42), and the third outlet (52) constitutes the heating outlet of the economizer.

3. The economic device according to claim 2, characterized in that: The economizer also includes a fourth heat exchanger (6), which is disposed in the second air supply chamber (12) and located below the second heat exchanger (4). The fourth heat exchanger (6) has a fourth inlet (61) and a fourth outlet (62). The fourth inlet (61) is connected to the second outlet (42), and the fourth outlet (62) is connected to the third inlet (51).

4. The economic device according to claim 1, characterized in that: The economizer also includes a first baffle assembly, which is disposed in the first air replenishment chamber (11), and the first baffle assembly and the inner wall of the first air replenishment chamber (11) together form a first baffle channel (71). The liquid inlet (13) and the first air replenishment port (14) are connected through the first baffle channel (71).

5. The economic device according to claim 4, characterized in that: The first baffle assembly includes a first baffle (72), which is located on one side of the partition (2). The first baffle (72), the partition (2), and the inner wall of the corresponding first air supply chamber (11) together form a first exhaust space (17). The first heat exchanger (3) is located in the first exhaust space (17), and the first air supply port (14) is connected to the first exhaust space (17).

6. The economic device according to claim 5, characterized in that: The economizer also includes a first filter structure (81), which is disposed in the first exhaust space (17) and located between the first heat exchanger (3) and the first air inlet (14).

7. The economic device according to claim 5, characterized in that: The first baffle assembly further includes a second baffle (73), which is disposed on the side wall of the housing (1) away from the partition (2) and is located above the liquid inlet (13), with the liquid outlet direction of the liquid inlet (13) pointing downward to the second baffle (73).

8. The economic device according to claim 7, characterized in that: The first baffle assembly further includes a third baffle (74), which is arranged parallel to the partition (2). The third baffle (74) is located between the end of the second baffle (73) near the partition (2) and the first baffle (72). A first air passage gap is formed between the third baffle (74) and the end of the second baffle (73) near the partition (2), and a second air passage gap is formed between the third baffle (74) and the first baffle (72).

9. The economic device according to claim 8, characterized in that: The first baffle assembly further includes a fourth baffle (75), which is disposed below the third baffle (74) and is located above the liquid surface in the first air replenishment chamber (11).

10. The economic device according to claim 9, characterized in that: The fourth baffle (75) is provided with drip holes; and / or, the fourth baffle (75) is arranged horizontally or inclined relative to the liquid surface in the first air replenishment chamber (11).

11. The economic device according to claim 4, characterized in that: The economizer also includes a second baffle assembly disposed in the second air supply chamber (12), and the second baffle assembly and the first baffle assembly are mirror-symmetrical with respect to the partition (2).

12. The economic device according to claim 11, characterized in that: The second baffle assembly includes a fifth baffle (92), which is located on one side of the partition (2). The fifth baffle (92), the partition (2), and the inner wall of the corresponding second air supply chamber (12) together form a second exhaust space (18). The second heat exchanger (4) is located in the second exhaust space (18), and the second air supply port (16) is connected to the second exhaust space (18).

13. The economic device according to claim 12, characterized in that: The economizer also includes a second filter structure (82), which is disposed in the second exhaust space (18) and located between the second heat exchanger (4) and the second air inlet (16).

14. The economic device according to claim 1, characterized in that: The economizer also includes a sixth baffle (93), the liquid outlet (15) is located on the bottom surface of the second air replenishment chamber (12), the sixth baffle (93) is disposed on the bottom surface of the second air replenishment chamber (12), and the sixth baffle (93) is located between the liquid passage hole (21) and the liquid outlet (15).

15. The economic device according to claim 1, characterized in that: The first heat exchanger (3) is a finned heat exchanger; and / or, the second heat exchanger (4) is a finned heat exchanger.

16. A compressor assembly, characterized in that: The device includes at least two compressors and an economizer as described in any one of claims 1 to 15, all of the compressors are connected in series, and at least one of the compressors constitutes the high-pressure section of the compressor assembly, and at least one of the compressors constitutes the low-pressure section of the compressor assembly, the first air inlet (14) is connected to the high-pressure section, and the second air inlet (16) is connected to the low-pressure section.

17. An air conditioning system, characterized in that: Includes the economizer according to any one of claims 1 to 15 or the compressor assembly according to claim 16.

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