High-efficiency air cooler

Abstract

The invention discloses a high-efficiency air cooler, and relates to the technical field of air coolers, the high-efficiency air cooler comprises a machine shell, an axial flow fan and a refrigeration coil set, the axial flow fan is fixedly assembled in front of the machine shell through a fan fixing frame and used for blowing horizontal airflow into the machine shell, the refrigeration coil set is fixedly assembled in the machine shell, and the axial flow fan is fixedly assembled in front of the machine shell through a fan fixing frame. Cooling fins are arranged in the machine shell at equal intervals in the length direction of the machine shell. The refrigerating coil set comprises a plurality of first refrigerating coils extending in a snakelike mode in the horizontal plane and a plurality of second refrigerating coils extending in a snakelike mode in the horizontal plane, and the first refrigerating coils and the second refrigerating coils are distributed in the machine shell in the height direction of the machine shell at equal intervals. And the first refrigerating coil pipes and the second refrigerating coil pipes in adjacent columns are arranged in a staggered manner in space. According to the invention, the flow path of the refrigerant liquid can be reasonably distributed according to the flow of the refrigerant liquid, so that the refrigeration effect is improved on the premise of reducing the energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of high-efficiency air coolers, and particularly to a high-efficiency air cooler. Background Art

[0002] As a common refrigeration device, an air cooler is widely used in industrial, commercial, and household fields. Its basic principle is that the refrigerant liquid circulates in the refrigeration coil group, absorbing the heat of the surrounding air to achieve a cooling effect. However, the existing air coolers still have certain limitations in terms of energy efficiency and refrigeration effect, especially the poor adaptability under different power working conditions.

[0003] Fixed flow path design: Traditional air coolers usually adopt a fixed design for the flow path of the refrigerant liquid. Whether the refrigeration system is in a low-power or high-power working state, the flow path and cross-sectional area of the refrigerant liquid are fixed. This design may cause the flow rate of the refrigerant liquid to be too fast during high-power operation, reducing the heat exchange efficiency and thus affecting the refrigeration effect; while during low-power operation, the flow rate of the refrigerant liquid is too slow, reducing the circulation speed of the refrigerant, which may lead to poor refrigeration effect and further affect the overall energy efficiency of the system; Energy efficiency problem: Since the existing technology cannot dynamically adjust the flow path and cross-sectional area according to the flow rate of the refrigerant liquid, the energy efficiency performance of the system is unstable under different working conditions. Especially during low-power operation, the flow rate of the refrigerant liquid is slow, reducing the circulation speed of the refrigerant, which may lead to poor refrigeration effect and increase energy consumption at the same time; Incomplete evaporation of the refrigerant: During low-power operation, the flow rate of the refrigerant liquid in the coil group is slow, which may lead to a reduction in the circulation speed of the refrigerant in the coil group, thus affecting the refrigeration efficiency of the system. While during high-power operation, the flow rate of the refrigerant liquid is too fast, which may cause the refrigerant to stay in the coil group for too short a time and unable to fully absorb the heat in the air, also affecting the refrigeration effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency air cooler to solve the problems raised in the above background art.

[0005] To achieve the above invention purpose, the present invention adopts the following technical solutions: A high-efficiency air cooler provided by the present invention includes a housing, an axial flow fan, and a refrigeration coil group. The axial flow fan is fixedly assembled in front of the housing through a fan fixing frame and is used to blow horizontal air flow into the housing. The refrigeration coil group is fixedly assembled in the housing, and heat dissipation fins are arranged at equal intervals along the length direction of the housing; The refrigeration coil group includes a number of first refrigeration coils extending in a serpentine shape in the horizontal plane and a number of second refrigeration coils extending in a serpentine shape in the horizontal plane. Among them, the number of first refrigeration coils and the number of second refrigeration coils are evenly distributed along the height direction of the casing in the casing, and the first refrigeration coils and the second refrigeration coils in adjacent columns are arranged in a staggered manner in space; The high-efficiency air cooler further includes a liquid inlet assembly for introducing a coolant into the refrigeration coil group, an exhaust assembly for receiving refrigerant gas in the refrigeration coil group, and a control module. Among them, the liquid inlet assembly includes a liquid collecting cylinder, a first liquid injection part, and a second liquid injection part; a refrigerant inlet pipe is arranged at the bottom of the liquid collecting cylinder, the first liquid injection part is used for injecting the refrigerant liquid in the liquid collecting cylinder into a number of first refrigeration coils, and the second liquid injection part is used for injecting the refrigerant liquid in the liquid collecting cylinder into a number of second refrigeration coils; when the flow rate of the refrigerant liquid entering the liquid collecting cylinder is less than a preset flow rate, the first liquid injection part and the second liquid injection part operate intermittently, so that the refrigerant liquid in the liquid collecting cylinder is intermittently injected into the first refrigeration coil and the second refrigeration coil respectively, and when the flow rate of the refrigerant liquid entering the liquid collecting cylinder is greater than the preset flow rate, the first liquid injection part and the second liquid injection part operate simultaneously, so that the refrigerant liquid in the liquid collecting cylinder is synchronously injected into the first refrigeration coil and the second refrigeration coil.

[0006] Further, the high-efficiency air cooler further includes a control module, and the control module is used to control the increased output power of the axial flow fan when the flow rate entering the liquid collecting cylinder increases, and control the decreased output power of the axial flow fan when the flow rate entering the liquid collecting cylinder decreases.

[0007] Further, the greater the flow rate of the refrigerant liquid entering the liquid collecting cylinder, the shorter the intermittent injection time of the first liquid injection part and the second liquid injection part.

[0008] Further, the exhaust assembly includes a vertically arranged air collecting cylinder, and a first air inlet interface corresponding to the first refrigeration coil and a second air inlet interface corresponding to the second refrigeration coil are respectively arranged on one side of the air collecting cylinder; the first air inlet interface is connected to the output end of the corresponding first refrigeration coil, the second air inlet interface is connected to the output end of the corresponding first refrigeration coil, and a refrigerant gas exhaust pipe is arranged at the bottom of the air collecting cylinder.

[0009] Further, a first liquid inlet interface corresponding to the first refrigeration coil and a second liquid inlet interface corresponding to the second refrigeration coil are respectively arranged on one side of the liquid collecting cylinder, the first liquid inlet interface is connected to the input end of the corresponding first refrigeration coil, the second liquid inlet interface is connected to the output end of the corresponding first refrigeration coil, and a refrigerant inlet pipe is arranged at the bottom of the liquid collecting cylinder.

[0010] Further, the interior of the liquid collecting cylinder above the refrigerant inlet pipe is separated into an upper chamber and a lower chamber by a partition plate. A separating member is arranged in the upper chamber, and the separating member divides the upper chamber into an inner columnar chamber, a first semi-circular chamber and a second semi-circular chamber symmetrically arranged outside the inner columnar chamber. Among them, a connecting elbow is arranged in the lower chamber. One end of the connecting elbow is connected to the refrigerant inlet pipe 52, and the other end of the connecting elbow communicates with the bottom of the inner columnar chamber; the first semi-circular chamber communicates with the first refrigeration coil through a first liquid inlet interface, the second semi-circular chamber communicates with the second refrigeration coil through a second liquid inlet interface, first communication holes are uniformly arranged between the first semi-circular chamber and the inner columnar chamber in the height direction, second communication holes are uniformly arranged between the second semi-circular chamber and the inner columnar chamber in the height direction, and the first communication holes and the second communication holes are symmetrically arranged on both sides of the inner columnar chamber. A blocking member corresponding to the first connection hole is arranged on the inner wall of the inner columnar chamber, and the blocking member can block the first communication hole or the second communication hole. The first semi-circular chamber and the first liquid inlet interface form a first liquid injection part, and the second semi-circular chamber and the second liquid inlet interface form a second liquid injection part.

[0011] Further, a rotating shaft is rotatably installed in the inner columnar chamber. The bottom end of the rotating shaft extends into the connecting elbow and is provided with an impeller. The outer side of the rotating shaft is connected with a sleeve that can only slide axially through a keyway structure. The sleeve is fixedly connected with a movable sealing plate. The movable sealing plate is in sealed sliding connection with the inner wall of the inner columnar chamber. A return spring is arranged at the top of the movable sealing plate, and the sleeve is fixedly connected with the blocking member through a connecting piece respectively.

[0012] Further, the blocking member is semi-circular and closely adheres to the side wall of the inner columnar chamber, and the distance between adjacent first through holes and second through holes is greater than the width of the blocking member.

[0013] Further, the cross-sections of both the first refrigeration coil and the second refrigeration coil are elliptical, and the major axis directions of the elliptical cross-sections of the first refrigeration coil and the second refrigeration coil are parallel to the air flow blowing direction of the axial flow fan.

[0014] Compared with the prior art, the above one or more technical solutions have the following beneficial effects: The present invention improves the refrigeration effect and energy efficiency in the following ways: Dynamically adjust the flow path: When operating at low power, by reducing the cross-section of the refrigerant liquid flowing through the cold coil group, the flow velocity of the refrigerant liquid in the coil group is increased, thereby increasing the circulation speed of the refrigerant and ensuring the refrigeration efficiency. At the same time, by operating the first liquid injection part and the second liquid injection part in an intermittent manner, it is ensured that the refrigerant liquid has sufficient residence time in the coil group to achieve a full liquid-to-gas conversion.

[0015] Improving heat exchange efficiency: When operating at high power, by increasing the cross-section for the refrigerant liquid to flow through the cold coil group, the flow velocity of the refrigerant liquid in the coil group is reduced, thereby improving the heat exchange efficiency and ensuring that the refrigerant liquid can fully evaporate in the coil group to absorb more heat.

[0016] Energy efficiency optimization: By dynamically adjusting the flow path and cross-sectional area of the refrigerant liquid, the present invention can achieve the best energy efficiency performance under different power operating conditions, reduce energy consumption, and at the same time improve the refrigeration effect.

[0017] In summary, through the innovative flow path design, the present invention overcomes the problems of energy efficiency and refrigeration effect of air coolers in the prior art under different power operating conditions, and has significant technical advantages and broad application prospects.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic sectional view of the structure of the present invention; Figure 3 is a schematic diagram of the structure of the refrigeration coil group, liquid inlet assembly and exhaust assembly of the present invention; Figure 4 is Figure 3 a top view structural diagram of; Figure 5 is Figure 4 a schematic diagram of the A-A direction structure of; Figure 6 is a schematic diagram of the liquid inlet assembly and exhaust assembly of the present invention; Figure 7 is a schematic vertical sectional view of the liquid inlet assembly of the present invention; Figure 8 is Figure 7 a partial structural diagram at A of; Figure 9 is Figure 7 a partial structural diagram at B of; Figure 10 is a schematic vertical sectional view of the liquid inlet assembly of the present invention; Figure 11 is a schematic diagram of the split structure of the liquid collection cylinder and the partition member of the present invention.

[0021] In the figure: 1 - housing; 2 - axial flow fan; 3 - refrigeration coil group; 31 - first refrigeration coil; 32 - second refrigeration coil; 4 - heat sink; 5 - liquid inlet assembly; 51 - liquid collection cylinder; 511 - first liquid inlet interface; 512 - second liquid inlet interface; 52 - refrigerant liquid inlet pipe 52; 6 - exhaust assembly; 61 - gas collection cylinder; 611 - first gas inlet interface; 612 - second gas inlet interface; 62 - refrigerant gas exhaust pipe; 71 - partition; 72 - separation member; 73 - inner cylindrical cavity; 74 - first semi - annular cavity; 75 - second semi - annular cavity; 76 - connecting elbow; 77 - first communication hole; 78 - second communication hole; 83 - rotating shaft; 84 - impeller; 85 - sleeve; 86 - movable sealing plate; 87 - return spring; 9 - plugging member. Detailed implementation manners

[0022] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0023] Please refer to Figures 1-11 , the present invention provides a high - efficiency air cooler, including a housing 1, an axial flow fan 2 and a refrigeration coil group 3. The axial flow fan 2 is fixedly assembled in front of the housing 1 through a fan fixing frame and is used to blow horizontal air flow into the housing 1. The refrigeration coil group 3 is fixedly assembled in the housing 1, and heat sinks 4 are arranged at equal intervals along the length direction of the housing 1.

[0024] During use, the refrigerant liquid enters the refrigeration coil group 3. The axial flow fan 2 blows air flow into the housing 1, exchanges heat with the refrigeration coil group 3, so as to bring in heat and vaporize the refrigerant liquid in the refrigeration coil group 3 into refrigerant gas, and then it is discharged from the outlet.

[0025] As Figure 3 shown, in this embodiment, the refrigeration coil group 3 includes a plurality of first refrigeration coils 31 extending in a serpentine shape in the horizontal plane and a plurality of second refrigeration coils 32 extending in a serpentine shape in the horizontal plane. Among them, a plurality of first refrigeration coils 31 and a plurality of second refrigeration coils 32 are both evenly distributed along the height direction of the housing 1 in the housing 1, and the first refrigeration coils 31 and the second refrigeration coils 32 in adjacent columns are arranged in a staggered manner in space.

[0026] Based on the above design, after a number of first refrigeration coils 31 and a number of second refrigeration coils 32 are arranged in a special staggered manner, the heat exchange area of the air flow is increased, which is beneficial to improving the overall heat exchange efficiency and the refrigeration capacity of the air cooler. Secondly, this arrangement method can disrupt the air flow passing through this place and disturb each other to form a turbulent flow, so as to improve the heat exchange efficiency between the air flow and the refrigeration coil.

[0027] As Figure 1 shown, in this embodiment, the high-efficiency air cooler further includes a liquid inlet assembly 5 for introducing a coolant into the refrigeration coil group 3, and an exhaust assembly 6 for receiving the refrigerant gas in the refrigeration coil group 3; As Figure 3 shown, among them, the liquid inlet assembly 5 includes a liquid collecting cylinder 51, a first liquid injection part and a second liquid injection part; A refrigerant inlet pipe 52 is arranged at the bottom of the liquid collecting cylinder 51. The first liquid injection part is used to inject the refrigerant liquid in the liquid collecting cylinder 51 into a number of first refrigeration coils 31, and the second liquid injection part is used to inject the refrigerant liquid in the liquid collecting cylinder 51 into a number of second refrigeration coils 32. When the flow rate of the refrigerant liquid entering the liquid collecting cylinder 51 is less than the preset flow rate, the first liquid injection part and the second liquid injection part operate intermittently, so that the refrigerant liquid in the liquid collecting cylinder 51 is intermittently injected into the first refrigeration coil 31 and the second refrigeration coil 32 respectively. When the flow rate of the refrigerant liquid entering the liquid collecting cylinder 51 is greater than the preset flow rate, the first liquid injection part and the second liquid injection part operate simultaneously, so that the refrigerant liquid in the liquid collecting cylinder 51 is synchronously injected into the first refrigeration coil 31 and the second refrigeration coil 32.

[0028] Based on the above design, when the refrigeration system operates at low power, since the output flow rate of the refrigerant liquid is low, at this time, the cross-section for the refrigerant liquid to flow through the cold coil group can be reduced to increase the flow rate of the refrigerant liquid in the cold coil group, thereby increasing the circulation speed of the refrigerant in the system, so as to ensure the refrigeration efficiency of the refrigeration system; At this stage, when the refrigerant liquid enters the liquid collecting cylinder 51, the first liquid injection part and the second liquid injection part will operate intermittently (it can be understood that when the first liquid injection part operates, the second liquid injection part stops operating; conversely, when the second liquid injection part operates, the first liquid injection part stops operating). The cross-section for the refrigerant liquid to flow through the cold coil group is the sum of the cross-sections of a number of first refrigeration coils 31 or the sum of the cross-sections of a number of first refrigeration coils 31, so the cross-section for the refrigerant liquid to flow through the cold coil group is reduced.

[0029] And it is worth mentioning that since the first liquid injection part and the second liquid injection part operate intermittently at this stage, the refrigerant liquid can be in a static state in the first refrigeration coil 31 or the second refrigeration coil 32 in this stage to ensure that the refrigerant liquid can be converted from a liquid state to a gaseous state in the refrigeration coil group 3.

[0030] When the refrigeration system operates at high power, since the refrigerant liquid flow rate output is relatively high, at this time, the cross-section for the refrigerant liquid to flow through the cold coil group can be increased to reduce the flow velocity of the refrigerant liquid in the cold coil group, so as to improve the heat exchange efficiency, thereby ensuring that the refrigerant liquid can be converted from a liquid state to a gaseous state in the refrigeration coil group 3. At this stage, when the refrigerant liquid enters the liquid collecting cylinder 51, the first liquid injection part and the second liquid injection part will work simultaneously. The cross-section for the refrigerant liquid to flow through the cold coil group is the sum of the cross-sections of several first refrigeration coils 31 plus the sum of the cross-sections of several first refrigeration coils 31, so the cross-section for the refrigerant liquid to flow through the cold coil group is increased.

[0031] The present invention improves the refrigeration effect and energy efficiency through the above design. Specifically: 1. Dynamically adjust the flow path: When operating at low power, by reducing the cross-section for the refrigerant liquid to flow through the refrigeration coil group 3, the flow velocity of the refrigerant liquid in the refrigeration coil group 3 is increased, thereby enhancing the circulation speed of the refrigerant and ensuring the refrigeration efficiency. At the same time, by operating the first liquid injection part and the second liquid injection part in an intermittent manner, it is ensured that the refrigerant liquid has sufficient residence time in the refrigeration coil group 3 to achieve a full liquid-to-gas conversion.

[0032] 2. Improve the heat exchange efficiency: When operating at high power, by increasing the cross-section for the refrigerant liquid to flow through the refrigeration coil group 3, the flow velocity of the refrigerant liquid in the refrigeration coil group 3 is reduced, thereby improving the heat exchange efficiency and ensuring that the refrigerant liquid can fully evaporate in the refrigeration coil group 3 and absorb more heat.

[0033] 3. Energy efficiency optimization: By dynamically adjusting the flow path and cross-sectional area of the refrigerant liquid, the present invention can achieve the best energy efficiency performance under different power operating conditions, reduce energy consumption, and at the same time improve the refrigeration effect.

[0034] In summary, through the innovative flow path design, the present invention overcomes the energy efficiency and refrigeration effect problems of the air cooler in the prior art under different power operating conditions, and has significant technical advantages and broad application prospects.

[0035] In this embodiment, the high-efficiency air cooler further includes a regulation module (not shown). The regulation module is used to control the increased output power of the axial flow fan 2 when the flow rate entering the liquid collecting cylinder 51 increases, and control the decreased output power of the axial flow fan 2 when the flow rate entering the liquid collecting cylinder 51 decreases.

[0036] Based on the above design, when the flow rate of the refrigerant liquid needs to be smaller, that is, when the flow velocity of the refrigerant liquid in the cold coil group is lower, at this time, on the premise of not affecting the heat exchange efficiency, the power of the axial flow fan 2 is appropriately reduced to achieve the purpose of energy conservation. On the contrary, when the flow rate of the refrigerant liquid needs to be larger, that is, when the flow velocity of the refrigerant liquid in the cold coil group is faster, at this time, the heat exchange effect can be improved by increasing the power of the axial flow fan 2.

[0037] Furthermore, as the flow rate of the refrigerant liquid entering the liquid collecting cylinder 51 is larger, the time for the first liquid injection part and the second liquid injection part to inject liquid at intervals is shorter. Based on the above design, the time for the refrigerant liquid to be stationary in the first refrigeration coil 31 or the second refrigeration coil 32 per unit time can be increased to improve the heat exchange efficiency.

[0038] As Figure 6 shown, in this embodiment, the exhaust assembly 6 includes a vertically arranged air collecting cylinder 61. On one side of the air collecting cylinder 61, a first air inlet interface 611 corresponding to the first refrigeration coil 31 and a second air inlet interface 612 corresponding to the second refrigeration coil 32 are respectively arranged; the first air inlet interface 611 is connected to the output end of the corresponding first refrigeration coil 31, the second air inlet interface 612 is connected to the output end of the corresponding first refrigeration coil 31, and a refrigerant gas exhaust pipe 62 is arranged at the bottom of the air collecting cylinder 61. When the refrigerant liquid is converted into a gaseous state in the cooling coil, it will enter the air collecting cylinder 61 to converge, and then be input into the cooling system through the refrigerant gas exhaust pipe 62 at the bottom of the air collecting cylinder 61.

[0039] As Figure 6 shown, in this embodiment, on one side of the liquid collecting cylinder 51, a first liquid inlet interface 511 corresponding to the first refrigeration coil 31 and a second liquid inlet interface 512 corresponding to the second refrigeration coil 32 are respectively arranged. The first liquid inlet interface 511 is connected to the input end of the corresponding first refrigeration coil 31, the second liquid inlet interface 512 is connected to the output end of the corresponding first refrigeration coil 31, and a refrigerant liquid inlet pipe 5252 is arranged at the bottom of the liquid collecting cylinder 51.

[0040] Combined with Figures 7-11As shown, in this embodiment, the inside of the liquid collecting cylinder 51 above the refrigerant inlet pipe 5252 is separated into an upper chamber and a lower chamber by a partition plate 71. A separating member 72 is arranged in the upper chamber. The separating member 72 divides the upper chamber into an inner columnar chamber 73, a first semi-circular chamber 74 and a second semi-circular chamber 75 symmetrically arranged outside the inner columnar chamber 73. Among them, a connecting elbow 76 is arranged in the lower chamber. One end of the connecting elbow 76 is connected to the refrigerant inlet pipe 5252, and the other end of the connecting elbow 76 communicates with the bottom of the inner columnar chamber 73. The first semi-circular chamber 74 communicates with the first refrigeration coil 31 through a first liquid inlet interface 511. The second semi-circular chamber 75 communicates with the second refrigeration coil 32 through a second liquid inlet interface 512. First communication holes 77 are uniformly arranged between the first semi-circular chamber 74 and the inner columnar chamber 73 in the height direction. Second communication holes 78 are uniformly arranged between the second semi-circular chamber 75 and the inner columnar chamber 73 in the height direction. The first communication holes 77 and the second communication holes 78 are symmetrically arranged on both sides of the inner columnar chamber 73. A plugging member 9 corresponding to the first connection hole 77 is arranged on the inner wall of the inner columnar chamber 73. The plugging member 9 can plug the first communication hole 77 or the second communication hole 78. The first semi-circular chamber 74 and the first liquid inlet interface 511 form a first liquid injection part. The second semi-circular chamber 75 and the second liquid inlet interface 512 form a second liquid injection part.

[0041] When the refrigerant liquid enters the inner columnar chamber 73 through the refrigerant inlet pipe 5252 and the connecting elbow 76, if the flow rate of the refrigerant liquid is less than the preset flow rate, the plugging member 9 will plug the first communication hole 77 and the second communication hole 78 intermittently, so that the refrigerant liquid flows into the first semi-circular chamber 74 and the second semi-circular chamber 75 intermittently, so that the first liquid injection part and the second liquid injection part inject liquid into the first refrigeration coil 31 and the second refrigeration coil 32 intermittently respectively. If the flow rate of the refrigerant liquid exceeds the preset flow rate, the plugging member 9 will synchronously release the plugging of the first communication hole 77 and the second communication hole 78, so that the refrigerant liquid enters the first semi-circular chamber 74 and the second semi-circular chamber 75 synchronously, so that the first liquid injection part and the second liquid injection part inject liquid into the first refrigeration coil 31 and the second refrigeration coil 32 synchronously.

[0042] In this embodiment, a rotating shaft 83 is rotatably installed in the inner columnar chamber 73. The bottom end of the rotating shaft 83 extends into the connecting elbow 76 and is installed with an impeller 84. A sleeve 85 that can only slide axially along it is connected to the outside of the rotating shaft 83 through a keyway structure. The sleeve 85 is fixedly connected with a movable sealing plate 86. The movable sealing plate 86 is hermetically and slidably connected with the inner wall of the inner columnar chamber 73. A return spring 87 is arranged at the top of the movable sealing plate 86. The sleeve 85 is fixedly connected with the plugging member 9 through a connecting piece.

[0043] The blocking member 9 is semi-annular and closely attached to the side wall of the inner cylindrical cavity 73 , and the distance between adjacent first through holes 77 is greater than the width of the blocking member 9 .

[0044] Based on the above design, when the refrigerant liquid enters the inner cylindrical cavity 73 through the refrigerant liquid inlet pipe 5252 and the connecting elbow 76, the refrigerant will drive the impeller 84 to rotate and drive the rotating shaft 83 to rotate, and the rotation of the rotating shaft 83 can synchronously drive the sleeve 85 to rotate, so that the blocking member 9 rotates around the rotating shaft 83. In this process, the blocking member 9 can block the first connecting hole 77 and the second connecting hole 78 in a gap manner, so that the first injection part and the second injection part respectively inject liquid into the first refrigeration coil 31 and the second refrigeration coil 32 in a gap manner; When the flow rate of the refrigerant liquid entering the inner columnar cavity 73 is large, the hydraulic pressure formed in the inner columnar cavity 73 can push the movable sealing plate 86 to move upward and drive the sleeve 85 to move upward. At this time, the blocking member 9 moves upward and is misaligned with the first connecting hole 77 and the second connecting hole 78. The blocking member 9 can simultaneously release the blockage of the first connecting hole 77 and the second connecting hole 78; the refrigerant liquid is synchronously entered into the first semi-annular cavity 74 and the second semi-annular cavity 75, so that the first injection part and the second injection part are synchronously injected into the first refrigeration coil 31 and the second refrigeration coil 32.

[0045] In this embodiment, the cross-sections of the first refrigeration coil 31 and the second refrigeration coil 32 are both elliptical, and the major axis direction of the cross-sectional ellipse of the first refrigeration coil 31 and the second refrigeration coil 32 is arranged parallel to the airflow blowing direction of the axial flow fan 2.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency air cooler, comprising a housing, an axial flow fan and a refrigeration coil group. The axial flow fan is fixedly assembled in front of the housing through a fan fixing frame and is used to blow horizontal air flow into the housing. The refrigeration coil group is fixedly assembled in the housing, and heat dissipation fins are arranged at equal intervals along the length direction of the housing. It is characterized in that The refrigeration coil group includes a number of first refrigeration coils extending in a serpentine shape in the horizontal plane and a number of second refrigeration coils extending in a serpentine shape in the horizontal plane. Among them, a number of first refrigeration coils and a number of second refrigeration coils are evenly distributed along the height direction of the housing in the housing, and the first refrigeration coils and the second refrigeration coils in adjacent columns are arranged in a staggered manner in space. The high-efficiency air cooler further includes a liquid inlet assembly for introducing coolant into the refrigeration coil group, an exhaust assembly for receiving refrigerant gas in the refrigeration coil group, and a control module. Among them, the liquid inlet assembly includes a liquid collecting cylinder, a first liquid injection part and a second liquid injection part; a refrigerant inlet pipe is arranged at the bottom of the liquid collecting cylinder. The first liquid injection part is used to inject the refrigerant liquid in the liquid collecting cylinder into a number of first refrigeration coils, and the second liquid injection part is used to inject the refrigerant liquid in the liquid collecting cylinder into a number of second refrigeration coils; when the flow rate of the refrigerant liquid entering the liquid collecting cylinder is less than the preset flow rate, the first liquid injection part and the second liquid injection part operate intermittently, so that the refrigerant liquid in the liquid collecting cylinder is intermittently injected into the first refrigeration coil and the second refrigeration coil respectively. When the flow rate of the refrigerant liquid entering the liquid collecting cylinder is greater than the preset flow rate, the first liquid injection part and the second liquid injection part operate simultaneously, so that the refrigerant liquid in the liquid collecting cylinder is synchronously injected into the first refrigeration coil and the second refrigeration coil.

2. The high-efficiency air cooler according to claim 1, wherein, The high-efficiency air cooler further includes a control module, which is used to control the increase of the output power of the axial flow fan when the flow rate entering the liquid collecting cylinder increases, and control the decrease of the output power of the axial flow fan when the flow rate entering the liquid collecting cylinder decreases.

3. The high-efficiency air cooler according to claim 1, characterized in that, As the flow rate of the refrigerant liquid entering the liquid collecting cylinder is larger, the intermittent injection time of the first liquid injection part and the second liquid injection part is shorter.

4. The high-efficiency air cooler according to claim 1, wherein, The exhaust assembly includes a vertically arranged air collecting cylinder. On one side of the air collecting cylinder, a first air inlet interface corresponding to the first refrigeration coil and a second air inlet interface corresponding to the second refrigeration coil are respectively arranged; the first air inlet interface is connected to the output end of the corresponding first refrigeration coil, the second air inlet interface is connected to the output end of the corresponding first refrigeration coil, and a refrigerant gas exhaust pipe is arranged at the bottom of the air collecting cylinder.

5. The high-efficiency air cooler according to claim 1, wherein On one side of the liquid collecting cylinder, a first liquid inlet interface corresponding to the first refrigeration coil and a second liquid inlet interface corresponding to the second refrigeration coil are respectively arranged. The first liquid inlet interface is connected to the input end of the corresponding first refrigeration coil, the second liquid inlet interface is connected to the output end of the corresponding first refrigeration coil, and a refrigerant inlet pipe is arranged at the bottom of the liquid collecting cylinder.

6. The high-efficiency air cooler according to claim 5, characterized in that, Inside the liquid collecting cylinder above the refrigerant inlet pipe, it is separated into an upper chamber and a lower chamber by a partition plate. A separating member is arranged in the upper chamber. The separating member divides the upper chamber into an inner columnar chamber, a first semi-circular chamber and a second semi-circular chamber symmetrically arranged outside the inner columnar chamber. Among them, a connecting elbow is arranged in the lower chamber. One end of the connecting elbow is connected to the refrigerant inlet pipe 52, and the other end of the connecting elbow communicates with the bottom of the inner columnar chamber; the first semi-circular chamber communicates with the first refrigeration coil through a first liquid inlet interface, the second semi-circular chamber communicates with the second refrigeration coil through a second liquid inlet interface. First communication holes are uniformly arranged between the first semi-circular chamber and the inner columnar chamber in the height direction, and second communication holes are uniformly arranged between the second semi-circular chamber and the inner columnar chamber in the height direction. And the first communication holes and the second communication holes are symmetrically arranged on both sides of the inner columnar chamber. A blocking member corresponding to the first connection hole is arranged on the inner wall of the inner columnar chamber. The blocking member can block the first communication hole or the second communication hole. The first semi-circular chamber and the first liquid inlet interface form a first liquid injection part, and the second semi-circular chamber and the second liquid inlet interface form a second liquid injection part.

7. The high-efficiency air cooler according to claim 6, characterized in that A rotating shaft is rotatably installed in the inner columnar chamber. The bottom end of the rotating shaft extends into the connecting elbow and is equipped with an impeller. A sleeve that can only slide axially along it is connected to the outside of the rotating shaft through a keyway structure. The sleeve is fixedly connected with a movable sealing plate. The movable sealing plate is in sealed sliding connection with the inner wall of the inner columnar chamber. A return spring is arranged at the top of the movable sealing plate. The sleeve is fixedly connected to the blocking member through a connecting piece respectively.

8. The high-efficiency air cooler according to claim 7, wherein, The blocking member is semi-circular and closely adheres to the side wall of the inner columnar chamber, and the distance between adjacent first through holes and second through holes is greater than the width of the blocking member.

9. The high-efficiency air cooler according to claim 1, characterized in that, The cross-sections of both the first refrigeration coil and the second refrigeration coil are elliptical, and the major axis direction of the elliptical cross-section of the first refrigeration coil and the second refrigeration coil is arranged parallel to the air flow blowing direction of the axial flow fan.

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