Variable-frequency air-cooled water chiller

Abstract

The utility model discloses a variable-frequency air-cooled water chiller which comprises a rack, an evaporator fixed in a water tank, a fan located above a condenser, an outlet end of a refrigeration compressor connected with an inlet end of the condenser through a pipeline, and an outlet end of the condenser connected with an inlet of a filter through a pipeline. An outlet of the filter is connected with an inlet of the expansion valve through a pipeline, an outlet of the expansion valve is connected with an inlet of the evaporator through a pipeline, an outlet of the evaporator is connected with an inlet of the refrigeration compressor through a pipeline, and a water outlet of the water pump is connected with the water tank. The flushing pipe is fixed and communicated with the water outlet pipe, a second valve is installed on the flushing pipe, the flushing pipe extends to the position above the condenser, a plurality of nozzles facing the condenser are installed on the flushing pipe, and the waste discharge diversion trench is located below the condenser and inclines downwards. The self-cleaning condenser has the function of self-cleaning the condenser, saves manpower and is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of chiller technology, and in particular to a variable frequency air-cooled chiller. Background Technology

[0002] A variable frequency air-cooled chiller is a water-cooling refrigeration device that utilizes variable frequency technology and an air-cooled condenser. It mainly consists of a compressor, condenser, expansion valve, filter, inverter, evaporator, and fan. The condenser is a key component, responsible for heat dissipation and cooling. During operation, a fan is needed to blow air onto the condenser for heat dissipation. However, after a period of use, the condenser accumulates a significant amount of dust, which reduces heat dissipation efficiency, affects condenser performance, and increases energy consumption. Existing variable frequency air-cooled chillers lack a self-cleaning function for the condenser, requiring manual cleaning after a period of use, which is inconvenient. Therefore, there is an urgent need to develop a variable frequency air-cooled chiller with a self-cleaning condenser function, saving manpower and offering greater ease of use, overcoming current shortcomings and meeting current needs. Utility Model Content

[0003] The purpose of this invention is to provide a variable frequency air-cooled chiller to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A variable frequency air-cooled chiller includes a frame, a condenser, a fan, a refrigeration compressor, a water tank, a waste discharge channel, a water pump, a filter, an expansion valve, an evaporator, an outlet pipe, and a flushing pipe. The condenser, fan, refrigeration compressor, water tank, waste discharge channel, and water pump are all fixedly installed within the frame. The evaporator is fixed within the water tank. The fan is located above the condenser. The outlet of the refrigeration compressor is connected to the inlet of the condenser via a pipe. The outlet of the condenser is connected to the inlet of the filter via a pipe. The outlet of the filter is connected to the expansion valve via a pipe. The valve inlet is connected, the expansion valve outlet is connected to the evaporator inlet via a pipe, the evaporator outlet is connected to the refrigeration compressor inlet via a pipe, the water pump outlet is connected to the water tank, the water tank is equipped with an outlet pipe, the outlet pipe is equipped with a first valve, the flushing pipe is fixed and connected to the outlet pipe, the flushing pipe is equipped with a second valve, the flushing pipe extends to the top of the condenser, the flushing pipe is equipped with multiple nozzles facing the condenser, the waste discharge guide channel is located below the condenser, and the waste discharge guide channel is inclined downward.

[0006] Preferably, the angle between the waste discharge guide channel and the horizontal plane is 15-25°.

[0007] Preferably, the evaporator is made of copper.

[0008] Preferably, a frequency converter is installed inside the frame, and the refrigeration compressor is electrically connected to the frequency converter.

[0009] The beneficial effects of this utility model are as follows: During normal use, the first valve of this variable frequency air-cooled chiller is open, and the second valve is closed. A water pump delivers water to the water tank, and the refrigerant is compressed into a high-temperature, high-pressure gas by the refrigeration compressor. This gas is then delivered to the condenser, where a fan blows air to dissipate heat. The high-temperature, high-pressure gas in the condenser transforms into a low-temperature, low-pressure liquid. The liquid then passes through a filter and expansion valve into the evaporator. The low-temperature, low-pressure refrigerant in the evaporator absorbs heat and evaporates into gas. Simultaneously, the evaporator absorbs heat to cool the water in the water tank. The gas discharged from the evaporator is then recycled back to the refrigeration compressor. The chilled water in the water tank is discharged from the outlet pipe. After a period of use, the condenser needs cleaning. During cleaning, the second valve is opened, and the first valve is closed. Water from the outlet pipe enters the flushing pipe and is sprayed onto the condenser from multiple nozzles to flush it. The wastewater generated during flushing falls into the wastewater discharge channel and flows along the channel to the outside of the frame for discharge. In summary, this utility model has a self-cleaning condenser function, which saves manpower and makes it more convenient to use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0012] Figure 3 This is a partial structural diagram of the present invention. Figure 1 .

[0013] Figure 4 This is a partial structural diagram of the present invention. Figure 2 .

[0014] Legend:

[0015] 1. Frame; 2. Condenser; 3. Fan; 4. Refrigeration compressor; 5. Water tank; 6. Waste discharge channel; 7. Water pump; 8. Filter; 9. Expansion valve; 10. Evaporator; 11. Water outlet pipe; 12. First valve; 13. Flushing pipe; 14. Nozzle; 15. Second valve; 16. PLC controller; 17. Frequency converter. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] See Figures 1-4 In this embodiment of the utility model, a variable frequency air-cooled chiller includes a frame 1, a condenser 2, a fan 3, a refrigeration compressor 4, a water tank 5, a waste discharge channel 6, a water pump 7, a filter 8, an expansion valve 9, an evaporator 10, a water outlet pipe 11, and a flushing pipe 13. The condenser 2, fan 3, refrigeration compressor 4, water tank 5, waste discharge channel 6, and water pump 7 are all fixedly installed within the frame 1. The evaporator 10 is fixed within the water tank 5. The fan 3 is located above the condenser 2. The condenser 2 stores refrigerant. The outlet end of the refrigeration compressor 4 is connected to the inlet end of the condenser 2 via a pipe. The outlet end of the condenser 2 is connected to the inlet of the filter 8 via a pipe. The outlet of the filter 8 is connected to the inlet of the expansion valve 9 via a pipe. The outlet of the expansion valve 9 is connected to the inlet of the evaporator 10 via a pipe. The outlet of the evaporator 10 is connected to the inlet of the refrigeration compressor 4 via a pipe. The water pump 7 is connected to an external water source via a pipe. The outlet of the water pump 7 is connected to the water tank 5. A water outlet pipe 11 is installed on the water tank 5. A first valve 12 is installed on the water outlet pipe 11. The flushing pipe 13 is fixed and connected to the water outlet pipe 11. A second valve 15 is installed on the flushing pipe 13. The flushing pipe 13 extends above the condenser 2. Multiple nozzles 14 facing the condenser 2 are installed on the flushing pipe 13. The waste discharge guide channel 6 is located below the condenser 2. The waste discharge guide channel 6 is inclined downward. The angle between the waste discharge guide channel 6 and the horizontal plane is 15-25°.

[0019] The evaporator 10 is made of copper, which gives it good thermal conductivity.

[0020] The frame 1 is equipped with a frequency converter 17, and the refrigeration compressor 4 is electrically connected to the frequency converter 17. The refrigeration efficiency of the refrigeration compressor 4 can be adjusted through the frequency converter 17.

[0021] The rack 1 is equipped with a PLC controller 16, which controls the entire electrical system.

[0022] Working principle: During normal operation, the first valve 12 of this variable frequency air-cooled chiller is open and the second valve 15 is closed. Water is pumped to the water tank 5 by the water pump 7. The refrigerant is compressed into a high-temperature, high-pressure gas by the refrigeration compressor 4 and then sent to the condenser 2. The fan 3 blows air onto the condenser 2 to dissipate heat. The high-temperature, high-pressure gas in the condenser 2 is transformed into a low-temperature, low-pressure liquid. The liquid then passes through the filter 8 and the expansion valve 9 and enters the evaporator 10. In the evaporator 10, the low-temperature, low-pressure refrigerant absorbs heat and evaporates into gas. The evaporator 10 absorbs heat and cools the water in the water tank 5. The gas discharged from the evaporator 10 is then sent to the refrigeration compressor 4 for recycling. The cold water in the water tank 5 is output from the outlet pipe 11. After a period of use, the condenser 2 is cleaned. During cleaning, the second valve 15 is opened and the first valve 12 is closed. The water in the outlet pipe 11 flows into the flushing pipe 13 and is then sprayed from multiple nozzles 14 onto the condenser 2 to flush it. The wastewater generated during flushing falls into the wastewater discharge guide trough 6 and flows along the wastewater discharge guide trough 6 to the outside of the frame 1 for discharge.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A variable frequency air-cooled chiller, characterized in that, The system includes a frame (1), a condenser (2), a fan (3), a refrigeration compressor (4), a water tank (5), a waste discharge channel (6), a water pump (7), a filter (8), an expansion valve (9), an evaporator (10), a water outlet pipe (11), and a flushing pipe (13). The condenser (2), fan (3), refrigeration compressor (4), water tank (5), waste discharge channel (6), and water pump (7) are all fixedly installed inside the frame (1). The evaporator (10) is fixed inside the water tank (5). The fan (3) is located above the condenser (2). The outlet of the refrigeration compressor (4) is connected to the inlet of the condenser (2) via a pipe. The outlet of the condenser (2) is connected to the inlet of the filter (8) via a pipe. The outlet of the filter (8) is connected to the expansion valve (9) via a pipe. The expansion valve (9) is connected to the inlet of the expansion valve (9), the outlet of the expansion valve (9) is connected to the inlet of the evaporator (10) through a pipe, the outlet of the evaporator (10) is connected to the inlet of the refrigeration compressor (4) through a pipe, the outlet of the water pump (7) is connected to the water tank (5), the water tank (5) is equipped with an outlet pipe (11), the outlet pipe (11) is equipped with a first valve (12), the flushing pipe (13) is fixed and connected to the outlet pipe (11), the flushing pipe (13) is equipped with a second valve (15), the flushing pipe (13) extends to the top of the condenser (2), the flushing pipe (13) is equipped with multiple nozzles (14) facing the condenser (2), the waste discharge guide channel (6) is located below the condenser (2), and the waste discharge guide channel (6) is inclined downward.

2. The variable frequency air-cooled chiller of claim 1, wherein, The angle between the waste discharge guide channel (6) and the horizontal plane is 15-25°.

3. The variable frequency air-cooled chiller of claim 1, wherein, The evaporator (10) is made of copper.

4. The variable frequency air-cooled chiller of claim 1, wherein, A frequency converter (17) is installed inside the frame (1), and the refrigeration compressor (4) is electrically connected to the frequency converter (17).

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