Air-cooled water chiller

Abstract

The utility model belongs to water chilling unit technical field, especially for air -cooled water chilling unit, including condenser, compressor, evaporimeter and throttle valve that communicate in proper order, condenser and throttle valve through connection, still include the condensing fan that is located at the fan support top air outlet, be equipped with the air inlet on the lateral wall of fan support, the position of air inlet in condenser is located on fan support alignment, be equipped with the adjustable air inlet angle louvre in air inlet, the condenser is located on fan support through the angle of inclination adjusting mechanism. The utility model can adjust the angle of condenser through the angle of inclination adjusting mechanism after the louvre adjusted the angle of blade, thereby the air inlet angle of louvre is adapted, avoids appearing vortex, the situation that fin exists airflow dead zone, guarantees the heat exchange efficiency of condenser is not influenced.

Description

Technical Field

[0001] This utility model relates to the technical field of water chiller units, specifically air-cooled water chiller units. Background Technology

[0002] As the core equipment of a high-efficiency refrigeration system, the air-cooled chiller unit has core components including a condenser, louvers, a constant-speed fan, a compressor, an evaporator, and a throttling valve.

[0003] The louvers can be adjusted in opening to change the air intake when the ambient temperature fluctuates (such as the temperature difference between day and night in spring and autumn), thus preventing the compressor from shutting down due to low pressure or tripping due to high pressure. In extreme weather conditions, some louvers can be closed to reduce the intrusion of cold air, prevent ice from forming and cracking inside the heat exchanger, or resist typhoons to protect the condenser fins.

[0004] However, the heat dissipation performance of air-cooled chillers directly depends on the heat exchange efficiency between the condenser and the air. When the angle of the louvers is adjusted, the air inlet angle of the condenser changes, which may cause vortices and dead air zones in the fins, all of which will affect the heat exchange efficiency.

[0005] Currently, condensers are generally installed at a fixed angle in the fan bracket, so it is necessary to design an air-cooled chiller unit with an adjustable condenser angle. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an air-cooled chiller unit, which solves the problem that the heat dissipation efficiency of the entire chiller unit is affected after adjusting the louver angle due to the non-adjustable condenser angle.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an air-cooled chiller unit, comprising a condenser, a compressor, an evaporator, and a throttling valve connected in sequence, wherein the condenser and the throttling valve are connected in a continuous manner, and further comprising a condensing fan located at the air outlet at the top of a fan bracket, wherein an air inlet is provided on the side wall of the fan bracket, the condenser is located on the fan bracket aligned with the air inlet, the air inlet is provided with louvers with an adjustable air inlet angle, and the condenser is mounted on the fan bracket via an angle adjustment mechanism.

[0008] Preferably, one end or the middle of the condenser is rotatably connected to the fan bracket, and the other end of the condenser is rotatably connected to the tilt adjustment mechanism. The tilt adjustment mechanism includes one of a hydraulic cylinder and a pneumatic cylinder, and the other end of the tilt adjustment mechanism is rotatably connected to the fan bracket.

[0009] Preferably, a slider is rotatably connected to the bottom of the condenser, a guide rail is fixedly connected to the bottom of the fan bracket, the slider is slidably connected to the guide rail, the two tilt adjustment mechanisms are rotatably connected to the upper and lower parts of the condenser respectively, and the tilt adjustment mechanisms are rotatably connected to the fan bracket. The tilt adjustment mechanism includes one of a hydraulic cylinder and a pneumatic cylinder.

[0010] Preferably, the condenser is further provided with a tilt sensor, the output end of which is electrically connected to a controller, and the input end of the tilt adjustment mechanism is electrically connected to the output end of the controller.

[0011] Preferably, the louver includes a window frame, a plurality of slats rotatably connected to the window frame and arranged horizontally, and blades disposed on the slats, with adjacent slats connected by a synchronous belt drive.

[0012] Preferably, at least one end of the blade shaft is connected to an angle sensor, and the output of the angle sensor is electrically connected to the input of the controller.

[0013] Preferably, the angle sensor includes an encoder.

[0014] Preferably, the louver is also equipped with a wind speed sensor, the output of which is electrically connected to the input of the controller, and the output of the controller is also electrically connected to the input of the condenser fan.

[0015] Preferably, the tilt sensor includes a gyroscope.

[0016] Preferably, the adjustment angle of the condenser relative to the vertical plane is -10° to 30°.

[0017] Compared with the prior art, the present invention provides an air-cooled chiller unit, which has the following beneficial effects:

[0018] This air-cooled chiller unit allows for adjustment of the condenser angle via a tilt adjustment mechanism after the louver blades are adjusted. This adapts to the air inlet angle of the louvers, preventing vortices and dead air zones on the fins, thus ensuring that the condenser's heat exchange efficiency is not affected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this air-cooled chiller unit;

[0020] Figure 2 This is the system architecture diagram of this air-cooled chiller unit;

[0021] Figure 3 This is the topology diagram of this air-cooled chiller unit.

[0022] In the diagram: 1. Fan bracket; 2. Condenser; 3. Compressor; 4. Evaporator; 5. Throttling valve; 6. Condenser fan; 7. Air inlet; 8. Louver; 9. Tilt adjustment mechanism; 10. Tilt sensor; 11. Controller; 12. Angle sensor; 13. Wind speed sensor. Detailed Implementation

[0023] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] Please see Figure 1-3 This utility model provides the following technical solution: an air-cooled chiller unit, including a condenser 2, a compressor 3, an evaporator 4 and a throttle valve 5 connected in sequence, the condenser 2 and the throttle valve 5 being connected in a through connection, and also including a condenser fan 6 located at the air outlet at the top of the fan bracket 1, an air inlet 7 being provided on the side wall of the fan bracket 1, the condenser 2 being located on the fan bracket 1 aligned with the air inlet 7, the air inlet 7 being provided with an adjustable air inlet angle louver 8, the condenser 2 being located on the fan bracket 1 via an angle adjustment mechanism 9, the angle adjustment mechanism 9 including one of a hydraulic cylinder and a pneumatic cylinder; the louver 8 including a window frame, several blade shafts rotatably connected to the window frame and arranged horizontally, and blades provided on the blade shafts.

[0026] As an optional implementation of this utility model, after the angle of the louver 8 is adjusted, the angle of the condenser 2 can be adjusted by the tilt adjustment mechanism 9 to match the air inlet angle of the louver 8, so as to avoid the occurrence of vortices and airflow dead zones in the fins, and ensure that the heat exchange efficiency of the condenser 2 is not affected.

[0027] In this technical solution, the tilt adjustment mechanism 9 can be driven by a pneumatic cylinder or hydraulic cylinder (described later), or by other means, such as an electric rope winding machine. This technical solution does not specifically limit this.

[0028] Example 2:

[0029] Please see Figure 1-3The present invention provides the following technical solution: an air-cooled chiller unit, including a condenser 2, a compressor 3, an evaporator 4 and a throttle valve 5 connected in sequence, the condenser 2 and the throttle valve 5 being connected in a through manner, and also including a condenser fan 6 located at the air outlet at the top of the fan bracket 1, an air inlet 7 being provided on the side wall of the fan bracket 1, the condenser 2 being located on the fan bracket 1 aligned with the air inlet 7, the air inlet 7 being provided with a louver 8 with an adjustable air inlet angle, and the condenser 2 being located on the fan bracket 1 through an angle adjustment mechanism 9;

[0030] One end or middle of the condenser 2 is rotatably connected to the fan bracket 1, and the other end of the condenser 2 is rotatably connected to the tilt adjustment mechanism 9. The adjustment angle of the condenser 2 relative to the vertical plane is -10° to 30°. The tilt adjustment mechanism 9 includes one of a hydraulic cylinder or a pneumatic cylinder, and the other end of the tilt adjustment mechanism 9 is rotatably connected to the fan bracket 1.

[0031] As an optional implementation of this utility model, this embodiment further limits the adjustment method of the condenser 2 so that when the tilt adjustment mechanism 9 applies a pulling force or a pushing force to the condenser 2, the angle of the condenser 2 can be adjusted.

[0032] Furthermore, the condenser 2 is also equipped with a tilt sensor 10, which includes a gyroscope. The output of the tilt sensor 10 is electrically connected to the controller 11, and the input of the tilt adjustment mechanism 9 is electrically connected to the output of the controller 11. The louver 8 includes a window frame, a plurality of blade shafts rotatably connected to the window frame and arranged horizontally, and blades provided on the blade shafts. Adjacent blade shafts are connected by a synchronous belt drive. At least one end of the blade shaft is connected to an angle sensor 12, and the output of the angle sensor 12 is electrically connected to the input of the controller 11. The angle sensor 12 includes an encoder.

[0033] The louver 8 is also equipped with a wind speed sensor 13. The output of the wind speed sensor 13 is electrically connected to the input of the controller 11, and the output of the controller 11 is also electrically connected to the input of the condenser fan 6.

[0034] As an optional implementation of this utility model, when the blade angle of the louver 8 changes, the internal pressure of the fan bracket 1 and the airflow velocity through the louver 8 will change when the fan speed remains constant. A lower velocity will affect the heat exchange efficiency, while a higher velocity may cause excessive blade vibration and noise, and in severe cases, may even burn out the condenser fan 6. Therefore, when the blade angle of the louver 8 is adjusted, the tilt angle of the condenser 2 and the speed of the condenser fan 6 (i.e., the internal pressure of the fan bracket 1) can be automatically adjusted according to the current blade angle and the current airflow velocity through the louver 8, ensuring reliable heat exchange performance of the condenser 2.

[0035] In this technical solution, regarding how to control the speed of the condenser fan 6 and the tilt angle of the condenser 2, it should be understood that when the opening width of the louver 8 is small, the speed of the condenser fan 6 has not yet been adjusted, so the flow velocity at the louver 8 increases. Therefore, the speed of the condenser fan 6 should be appropriately reduced, and the adjustment of the tilt angle of the condenser 2 should be adapted to the exit angle of the airflow from the louver 8.

[0036] During adjustment, the encoder and wind speed sensor 13 detect the angle of the blade shaft and the current wind speed (when the condenser fan 6 is running), respectively. Then the controller 11 can control the two hydraulic cylinders to run in opposite directions. When the gyroscope detects that the condenser 2 has reached the appropriate tilt angle, it controls the two hydraulic cylinders to stop running and adjusts the speed of the condenser fan 6 at the same time.

[0037] The gyroscope, encoder, and wind speed sensor 13 are all known existing technologies. Their specific installation methods to support angle measurement and wind speed measurement are known to those skilled in the art. This technical solution does not involve any improvements to these components, so they will not be described in detail.

[0038] Example 3:

[0039] Please see Figure 1-3 The present invention provides the following technical solution: an air-cooled chiller unit, including a condenser 2, a compressor 3, an evaporator 4 and a throttle valve 5 connected in sequence, the condenser 2 and the throttle valve 5 being connected in a through manner, and also including a condenser fan 6 located at the air outlet at the top of the fan bracket 1, an air inlet 7 being provided on the side wall of the fan bracket 1, the condenser 2 being located on the fan bracket 1 aligned with the air inlet 7, the air inlet 7 being provided with a louver 8 with an adjustable air inlet angle, and the condenser 2 being located on the fan bracket 1 through an angle adjustment mechanism 9;

[0040] A slider is rotatably connected to the bottom of the condenser 2, and a guide rail is fixedly connected to the bottom of the fan bracket 1. The slider is slidably connected in the guide rail. Two tilt adjustment mechanisms 9 are rotatably connected to the upper and lower parts of the condenser 2, respectively, and both tilt adjustment mechanisms 9 are rotatably connected to the fan bracket 1. The adjustment angle of the condenser 2 relative to the vertical plane is -10° to 30°. The tilt adjustment mechanism 9 includes one of a hydraulic cylinder and a pneumatic cylinder.

[0041] As an optional implementation of this utility model, compared with embodiment 2, this technical solution changes the angle adjustment method of the condenser 2. Since the condenser 2 in some air-cooled chiller units is relatively heavy, the solution of supporting the condenser 2 by the fan bracket 1 is better, and the sliding method is also more stable. Furthermore, by applying force to the upper and lower parts of the condenser 2 through two tilt adjustment mechanisms 9 respectively, the position of the condenser 2 relative to the louver 8 can always be relatively close, ensuring that the airflow passes through the condenser 2 more easily.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air-cooled chiller unit, comprising a condenser, a compressor, an evaporator, and a throttling valve connected in sequence, wherein the condenser and the throttling valve are connected in a continuous manner, and further comprising a condensing fan located at the air outlet at the top of a fan bracket, wherein an air inlet is provided on the side wall of the fan bracket, and the condenser is located on the fan bracket aligned with the air inlet, wherein the air inlet is provided with louvers with an adjustable air inlet angle, characterized in that, The condenser is mounted on the fan bracket via a tilt adjustment mechanism.

2. The air-cooled chiller unit according to claim 1, characterized in that, One end or middle of the condenser is rotatably connected to the fan bracket, and the other end of the condenser is rotatably connected to the tilt adjustment mechanism. The tilt adjustment mechanism includes one of a hydraulic cylinder and a pneumatic cylinder, and the other end of the tilt adjustment mechanism is rotatably connected to the fan bracket.

3. The air-cooled chiller unit according to claim 1, characterized in that, The bottom of the condenser is rotatably connected to a slider, and the bottom of the fan bracket is fixedly connected to a guide rail. The slider is slidably connected to the guide rail. The two tilt adjustment mechanisms are rotatably connected to the upper and lower parts of the condenser, respectively, and both tilt adjustment mechanisms are rotatably connected to the fan bracket. The tilt adjustment mechanism includes one of a hydraulic cylinder and a pneumatic cylinder.

4. The air-cooled chiller unit according to any one of claims 2-3, characterized in that, The condenser is also equipped with a tilt sensor, the output of which is electrically connected to a controller, and the input of the tilt adjustment mechanism is electrically connected to the output of the controller.

5. The air-cooled chiller unit according to claim 4, characterized in that, The louver includes a window frame, several blade shafts rotatably connected to the window frame and arranged horizontally, and blades provided on the blade shafts. Adjacent blade shafts are connected by a synchronous belt drive.

6. The air-cooled chiller unit according to claim 5, characterized in that, At least one end of the blade shaft is connected to an angle sensor, and the output of the angle sensor is electrically connected to the input of the controller.

7. The air-cooled chiller unit according to claim 6, characterized in that, The angle sensor includes an encoder.

8. The air-cooled chiller unit according to claim 6, characterized in that, The louvers are also equipped with a wind speed sensor, the output of which is electrically connected to the input of the controller, and the output of the controller is also electrically connected to the input of the condenser fan.

9. The air-cooled chiller unit according to claim 4, characterized in that, The tilt sensor includes a gyroscope.

10. The air-cooled chiller unit according to claim 4, characterized in that, The condenser can be adjusted at an angle of -10° to 30° relative to the vertical plane.

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