Evaporative condenser with adjustable spray position and refrigeration system

Abstract

The application provides an evaporative condenser with adjustable spraying position and a refrigeration system, the evaporative condenser comprising a box body, a heat exchange coil, a spraying assembly, a water supply assembly, a driving member and a temperature detection unit; the heat exchange coil and the spraying assembly are arranged in the box body, the water supply assembly is connected with a water inlet of the spraying assembly, a movable end of the driving member is connected with the spraying assembly, and the driving member is used for driving the spraying assembly to move along a vertical direction to a preset position; the heat exchange coil has multiple layers of coils, adjacent two layers of coils are communicated, and the temperature detection unit is used for detecting the temperature of the coil. The evaporative condenser of the application, the temperature detection unit is used for detecting the temperature of the heat exchange coil, the driving member can drive the spraying assembly to move along the vertical direction to the preset position of the heat exchange coil to perform spraying operation, the spraying water is prevented from contacting the area with higher temperature on the heat exchange coil, the formation of scale on the surface of the heat exchange coil is effectively relieved, and the heat exchange efficiency of the evaporative condenser is ensured.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and in particular to an evaporative condenser and refrigeration system with adjustable spray position. Background Technology

[0002] Condensers are widely used in the refrigeration industry. Their performance directly affects the economy and reliability of the refrigeration system. Based on the cooling medium, condensers are classified into three types: water-cooled, air-cooled, and evaporative. Evaporative condensers offer advantages such as water saving, energy saving, compact structure, and small footprint, and are widely used in refrigeration systems.

[0003] Scaling on the coils of an evaporative condenser is a significant factor affecting heat exchange efficiency during operation. Scaling most easily occurs when cooling water comes into contact with the high-temperature coils. At this point, the water temperature rises, and the solubility of calcium and magnesium ions in the water is low, causing these ions to precipitate and adhere to the coils, forming scale. Studies have shown that when the calcium carbonate scale layer on the heat exchange coils is 2.4 mm thick, the condenser's heat dissipation decreases by approximately 55%. As the scale layer thickness increases, the heat dissipation continues to decrease.

[0004] In the existing technology, there are two main ways to prevent the formation of scale in evaporative condensers. One way is to add fresh water, which increases the concentration ratio of the circulating cooling water. The other way is to soften the cooling water, which uses a water processor to pre-purify the cooling water and remove calcium and magnesium ions. However, both methods have limited ability to prevent scale formation. Summary of the Invention

[0005] This invention provides an evaporative condenser and refrigeration system with adjustable spray position to solve the problem of scale formation on the surface of heat exchange coils in existing evaporative condensers.

[0006] In a first aspect, the present invention provides an evaporative condenser with adjustable spray position, comprising: a housing, a heat exchange coil, a spray assembly, a water supply assembly, a drive component, and a temperature detection unit;

[0007] The heat exchange coil and the spray assembly are located inside the box. The water supply assembly is connected to the water inlet of the spray assembly. The movable end of the drive component is connected to the spray assembly. The drive component is used to drive the spray assembly to move vertically to a preset position.

[0008] The heat exchange coil has multiple layers, with adjacent layers connected. The temperature detection unit is used to detect the temperature of the coil.

[0009] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the spray assembly includes a spray pipe and a plurality of nozzles, wherein the plurality of nozzles are spaced apart from the spray pipe and the nozzles are in communication with the spray pipe;

[0010] The movable end of the driving component is connected to the spray pipe, and the movable end can drive the spray pipe to move in the vertical direction.

[0011] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the heat exchange coil is provided with a clearance portion, the clearance portion extending from the top end of the heat exchange coil toward the bottom end of the heat exchange coil, and the spray assembly moves along the area where the clearance portion is located.

[0012] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the temperature detection unit includes multiple temperature sensors, and the multiple temperature sensors are arranged in a one-to-one correspondence with the multi-layer coil.

[0013] According to the present invention, an evaporative condenser with adjustable spray position is provided, the evaporative condenser further comprising a controller;

[0014] The drive unit and the multiple temperature sensors are all connected to the controller. The controller controls the drive unit to move the spray assembly to the preset position based on the comparison results between the detected temperature values ​​of the multiple temperature sensors and the preset temperature value.

[0015] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the water supply assembly includes a water supply pipeline, a circulating water pump and a telescopic pipe;

[0016] One end of the water supply pipeline is connected to the bottom of the box, and the other end is connected to the inlet of the spray pipe through the telescopic pipe. The telescopic pipe is located inside the box, and the circulating water pump is located in the water supply pipeline.

[0017] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the water supply assembly further includes a control valve, which is disposed in the water supply pipeline, and the opening degree of the control valve is adjusted based on the position of the spray assembly relative to the heat exchange coil in the vertical direction.

[0018] According to the present invention, an evaporative condenser with adjustable spray position is provided, wherein the circulating water pump is a centrifugal pump, a rotor pump, an axial flow pump, or a gear pump.

[0019] According to an evaporative condenser provided by the present invention, the driving component includes a motor and a linear motion mechanism;

[0020] The motor is located on the outer wall of the housing, the drive end of the motor is connected to the linear motion mechanism, and the movable end of the linear motion mechanism is connected to the spray pipe.

[0021] Secondly, the present invention provides a refrigeration system including the aforementioned evaporative condenser with adjustable spray position.

[0022] The present invention provides an evaporative condenser and refrigeration system with adjustable spray position. The heat exchange coil and spray assembly are installed in the housing. The temperature detection unit is used to detect the temperature of the heat exchange coil. The driving component is connected to the spray assembly. The driving component can drive the spray assembly to move vertically to the preset position of the heat exchange coil for spraying. This avoids the spray water from contacting the high-temperature area on the heat exchange coil, effectively reducing the formation of scale on the surface of the heat exchange coil and ensuring the heat exchange efficiency of the evaporative condenser. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is one of the structural schematic diagrams of the evaporative condenser with adjustable spray position provided by the present invention;

[0025] Figure 2 This is the second schematic diagram of the structure of the evaporative condenser with adjustable spray position provided by the present invention;

[0026] Figure 3 This is the third schematic diagram of the structure of the evaporative condenser with adjustable spray position provided by the present invention;

[0027] Reference numerals in the attached drawings: 1: Housing; 2: Heat exchange coil; 3: Spray assembly; 4: Water supply assembly; 401: Circulating water pump; 402: Telescopic pipe; 5: Drive component; 501: Lead screw; 502: Motor; 6: Temperature sensor; 7: Water storage tank; 8: Fan. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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 invention based on the specific circumstances.

[0030] The following is combined with Figures 1 to 3 This invention describes an evaporative condenser with adjustable spray position according to an embodiment of the invention.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the evaporative condenser with adjustable spray position provided in this embodiment of the invention includes: a housing 1, a heat exchange coil 2, a spray assembly 3, a water supply assembly 4, a driving component 5, and a temperature detection unit; the heat exchange coil 2 and the spray assembly 3 are disposed inside the housing 1, the water supply assembly 4 is connected to the water inlet of the spray assembly 3, the movable end of the driving component 5 is connected to the spray assembly 3, and the driving component 5 is used to drive the spray assembly 3 to move vertically to a preset position; the heat exchange coil 2 has multiple layers of coils, adjacent layers of coils are connected, and the temperature detection unit is used to detect the temperature of the coils.

[0032] Specifically, the evaporative condenser includes components such as a housing 1, heat exchange coils 2, spray assembly 3, water supply assembly 4, drive unit 5, and temperature detection unit. The housing 1 can be square, polygonal, or circular, etc., and the shape of the housing 1 is not specifically limited. The bottom of the housing 1 is equipped with a water storage tank 7 for storing cooling water. The top of the housing 1 is open, and a fan 8 is installed at the opening on the top of the housing 1. The fan 8 can be an axial flow fan.

[0033] The water supply assembly 4 is used to supply cooling water to the spray assembly 3, which includes multiple nozzles for spraying cooling water onto the heat exchange coil 2. The movable end of the drive component 5 is connected to the spray assembly 3, and the drive component 5 can drive the spray assembly 3 to move vertically to spray the heat exchange coil 2 at different height positions.

[0034] The inlet of heat exchange coil 2 is connected to the exhaust port of the compressor, the outlet of heat exchange coil 2 is connected to the evaporator, and the evaporator is connected to the air inlet of the compressor. Thus, a refrigerant cooling circuit is formed between heat exchange coil 2, compressor and evaporator. The refrigerant circulates in the refrigerant cooling circuit to achieve the cooling effect on the heat source.

[0035] The refrigerant condenses in the condenser through two stages: cooling and condensation. The first stage, cooling, involves sensible heat transfer by the refrigerant, resulting in a higher temperature. The second stage, condensation, involves latent heat transfer by the refrigerant, where the gaseous refrigerant transforms into a liquid state, a phase change that occurs at a lower temperature. Scale formation most easily occurs when cooling water comes into contact with the higher-temperature heat exchange coil 2. At this point, water evaporates, and calcium and magnesium ions precipitate. Scale formation can be avoided by preventing the spray water from contacting the higher-temperature heat exchange coil 2.

[0036] The heat exchange coil 2 has multiple layers, the number of which matches the height of the housing 1, and adjacent layers are connected. A temperature detection unit located inside the housing 1 detects the temperature of the heat exchange coil 2. The top area of ​​the heat exchange coil 2 has a higher temperature. The temperature detection unit primarily detects the temperature of each layer of coil located in the top area of ​​the heat exchange coil 2. Alternatively, the unit can be configured to detect the temperature of each layer of coil on the heat exchange coil 2. The temperature detection unit includes a temperature sensor 6, which can be one or more. For example, if there is only one temperature sensor 6, it can move vertically to collect the temperature of each layer of coil. When the collected coil temperature matches a preset temperature, the position of that layer of coil is the preset position. The preset temperature is the condensation temperature of the refrigerant, i.e., the temperature at which the gaseous refrigerant in the heat exchange coil 2 begins to condense into liquid refrigerant. The driving component 5 drives the spray assembly 3 to move to the preset position to perform a spraying operation on the heat exchange coil 2.

[0037] The following describes the working process of the evaporative condenser. Cooling water in the water storage tank 7 is pumped to the spray assembly 3 by the circulating water pump 401. The spray assembly 3 has multiple nozzles, through which the cooling water is sprayed onto the surface of the heat exchange coil 2, forming a thin water film. The rotation of the fan 8 causes air entering the housing 1 from the bottom side wall to move vertically upwards. The water film on the surface of the heat exchange coil 2 evaporates under the action of the rapidly flowing air. High-temperature, high-pressure gaseous refrigerant discharged from the compressor flows into the heat exchange coil 2. As it flows from the top to the bottom of the heat exchange coil 2, heat exchange occurs between the gaseous refrigerant and the water film on the surface of the heat exchange coil 2.

[0038] The temperature detection unit detects the temperature of each coil and determines the preset position by comparing the detected temperature value with the preset temperature value. The drive unit 5 can drive the spray assembly 3 to move vertically within the housing 1, and the drive unit 5 drives the spray assembly 3 to the preset position of the heat exchange coil 2. The preset position refers to the position where the refrigerant in the heat exchange coil 2 begins to change from a gaseous state to a liquid state, that is, the position where droplets first appear, which is also the position where the refrigerant begins to change from a high-temperature cooling process to a low-temperature condensation process. At the preset position, the spray assembly 3 sprays water onto the heat exchange coil 2. The spray water does not come into contact with the high-temperature areas of the heat exchange coil 2, and a portion of the heat exchange coil 2 located below the spray assembly 3 is sprayed with water to form a water film. The water film formed on the surface of heat exchange coil 2 evaporates under the action of rapidly flowing air, absorbing the heat of the refrigerant in heat exchange coil 2. The gaseous refrigerant condenses and transforms into liquid refrigerant. After flowing through the expansion valve, the liquid refrigerant flows into the evaporator. The evaporator absorbs the heat from the heat source, realizing the transformation of the refrigerant between liquid and gaseous states, and achieving the cooling effect on the heat source.

[0039] The spray assembly 3 sprays water at a preset position on the heat exchange coil 2, effectively preventing the spray water from contacting the high-temperature areas on the heat exchange coil 2. This effectively reduces or prevents the formation of scale on the surface of the heat exchange coil 2, ensuring the heat exchange efficiency of the evaporative condenser.

[0040] In this embodiment of the invention, the heat exchange coil 2 and the spray assembly 3 are installed inside the housing 1. The temperature detection unit is used to detect the temperature of the heat exchange coil 2. The driving component 5 is connected to the spray assembly 3. The driving component 5 can drive the spray assembly 3 to move vertically to the preset position of the heat exchange coil 2 to perform spraying operations, avoiding contact between the spray water and the high-temperature area on the heat exchange coil 2. This can effectively alleviate the formation of scale on the surface of the heat exchange coil 2 and ensure the heat exchange efficiency of the evaporative condenser.

[0041] In an optional embodiment, the spray assembly 3 includes a spray pipe and a plurality of nozzles, the plurality of nozzles being spaced apart on the spray pipe and communicating with the spray pipe; the movable end of the drive member 5 is connected to the spray pipe, and the movable end can drive the spray pipe to move in the vertical direction.

[0042] Specifically, the spray assembly 3 includes a spray pipe and multiple nozzles, with the nozzles spaced apart on the spray pipe and connected to it. The driving component 5 can be a cylinder, with its fixed end connected to the housing 1 and its piston rod connected to the spray pipe. By extending or retracting the piston rod, the spray pipe is driven to move vertically upward or downward, causing the nozzles to move to a preset position on the heat exchange coil 2 for spraying.

[0043] The driving component 5 can also be a slide rail and slider structure. The slide rail is set on the inner wall of the housing 1 and is set in the vertical direction. The slider is connected to the spray pipe. The slider moves along the extension direction of the slide rail, thereby driving the spray pipe to move in the vertical direction, so that the nozzle moves to the preset position of the heat exchange coil 2. The slider can be driven by a motor to slide along the slide rail.

[0044] In this embodiment of the invention, the movable end of the driving component 5 is connected to the spray pipe. The movable end drives the spray pipe to move in the vertical direction, and the spray pipe carries multiple nozzles to a preset position to perform spraying operations, which is convenient to operate.

[0045] like Figure 3 As shown, in an optional embodiment, the heat exchange coil 2 is provided with a clearance portion that extends from the top of the heat exchange coil 2 toward the bottom of the heat exchange coil, and the spray assembly 3 moves along the area where the clearance portion is located.

[0046] Specifically, the heat exchange coil 2 has a clearance portion located in the central area of ​​the heat exchange coil 2. This clearance portion is a recessed area formed by the indentation from the top of the heat exchange coil 2 towards its bottom, and it constitutes the movable area of ​​the spray assembly 3 in the vertical direction. The depth of the clearance portion is set according to actual needs; for example, the depth of the clearance portion is one-third of the thickness of the heat exchange coil 2, and the thickness of the heat exchange coil 2 is its vertical dimension.

[0047] The clearance section is located in the central area of ​​the heat exchange coil 2. When multiple nozzles are spraying, multiple nozzles spray at the center of the heat exchange coil 2, which is beneficial to the uniformity of the spray.

[0048] like Figure 1 and Figure 2 As shown, in an optional embodiment, the temperature detection unit includes multiple temperature sensors 6, and the multiple temperature sensors 6 are arranged one-to-one with the multilayer coil.

[0049] Specifically, the heat exchange coil 2 includes multiple layers of coils, and the temperature detection unit includes multiple temperature sensors 6. A temperature sensor 6 is installed on each layer of coil located in the top region of the heat exchange coil 2. Each temperature sensor 6 collects the temperature of its corresponding coil. Multiple temperature sensors 6 simultaneously collect the temperature of the multiple layers of coils, which facilitates rapid data acquisition. The temperature sensor 6 can be a resistive temperature sensor or a thermocouple temperature sensor.

[0050] Simultaneously comparing the detected temperature and preset temperature of multiple coils allows for the rapid determination of the preset position, which facilitates the timely movement of the spray assembly 3 to the preset position, effectively preventing the spray water from contacting the high-temperature area of ​​the heat exchange coil 2 and reducing or preventing the formation of scale.

[0051] In an optional embodiment, the evaporative condenser further includes a controller; the drive unit 5 and multiple temperature sensors 6 are all connected to the controller, and the controller controls the drive unit 5 to drive the spray assembly 3 to move to a preset position based on the comparison result between the detected temperature values ​​of the multiple temperature sensors 6 and the preset temperature values.

[0052] Specifically, both the drive unit 5 and the temperature sensors 6 are connected to the controller. Multiple temperature sensors 6 simultaneously collect the temperature of the multi-layer coil. Based on the comparison results of multiple detected temperature values ​​with preset temperature values, the controller determines the number of coil layers corresponding to the preset temperature, and controls the drive unit 5 to move to the coil of the corresponding layer.

[0053] In this embodiment of the invention, the controller controls the drive unit 5 to drive the spray assembly 3 to move vertically based on the comparison results of the detected temperature values ​​collected by multiple temperature sensors 6 and the preset temperature values, which is beneficial for the spray assembly 3 to move quickly to the preset position of the heat exchange coil 2.

[0054] like Figure 1 and Figure 2 As shown, in an optional embodiment, the water supply component 4 includes a water supply pipeline, a circulating water pump 401, and a telescopic pipe 402; one end of the water supply pipeline is connected to the bottom of the housing 1, and the other end is connected to the inlet of the spray pipe through the telescopic pipe 402. The telescopic pipe 402 is located inside the housing 1, and the circulating water pump 401 is located in the water supply pipeline.

[0055] Specifically, the water supply component 4 includes a water supply pipeline, a circulating water pump 401, and a telescopic pipe 402. The water supply pipeline includes a first section, a second section, and a third section connected in sequence. The first and third sections can be arranged horizontally, and the second section can be arranged vertically. The second section connects the first and third sections. The first section is connected to the water storage tank 7 at the bottom of the tank 1, and the third section is connected to the side wall at the top of the tank 1.

[0056] The circulating water pump 401 is installed on the water supply pipeline. Depending on the pumping method of the circulating water pump 401, the circulating water pump 401 can be a centrifugal pump, a rotary pump, an axial flow pump, or a gear pump, etc.

[0057] The telescopic pipe 402 is located inside the housing 1. One end of the telescopic pipe 402 is connected to the outlet of the water supply pipe, and the other end is connected to the inlet of the spray pipe. The telescopic pipe 402 has an appropriate range of extension and retraction and can be a plastic flexible hose. When the spray pipe moves vertically, the telescopic pipe 402 moves synchronously with the spray pipe to ensure the delivery of cooling water, while maintaining a simple structure.

[0058] The circulating water pump 401 drives the cooling water to flow along the water supply pipeline to the telescopic pipe 402, and then flows into the spray pipe from the telescopic pipe 402, and finally sprays it out from multiple nozzles to ensure the smooth circulation of the cooling water.

[0059] In an optional embodiment, the water supply assembly 4 further includes a control valve located in the water supply pipeline. The opening degree of the control valve is adjusted based on the position of the spray assembly 3 relative to the heat exchange coil 2 in the vertical direction.

[0060] Specifically, a control valve is installed on the water supply pipeline. The control valve can be a solenoid valve or a manual valve, and it can be installed on the second or third section of the water supply pipeline. The spray assembly 3 moves vertically within the housing 1. When the spray pipe moves to the preset position of the heat exchange coil 2 for spraying, the opening of the control valve is adjusted, thereby adjusting the water flow rate of the spray assembly 3. This ensures that the spray assembly 3 sprays the heat exchange coil 2 with an appropriate water flow rate, preventing scale buildup on the surface of the heat exchange coil 2 due to insufficient water flow, and preventing excessive water flow from increasing the water film thickness, increasing the thermal resistance of the water film, and affecting the heat exchange efficiency.

[0061] For example, when the spray assembly 3 moves to the lower part of the heat exchange coil 2, the opening of the control valve can be reduced; when the spray assembly 3 moves to the top part of the heat exchange coil 2, the opening of the control valve can be increased. The opening of the control valve can be adjusted according to the relative position of the spray assembly 3 and the heat exchange coil 2 to ensure that the spray water volume meets the usage requirements.

[0062] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the driving component 5 includes a motor and a linear motion mechanism; the motor is located on the outer wall of the housing 1, the driving end of the motor is connected to the linear motion mechanism, and the movable end of the linear motion mechanism is connected to the spray pipe.

[0063] Specifically, the driving component 5 includes a motor 502 and a linear motion mechanism. The linear motion mechanism includes a lead screw 501 and a lead screw nut. The motor 502 is rotatably connected to the lead screw 501, and the lead screw nut is threadedly connected to the lead screw 501. The lead screw nut can move along the extension direction of the lead screw 501, and the lead screw nut is connected to the spray pipe.

[0064] The number of motors 502 and linear motion mechanisms is the same; for example, there are two motors 502. The motors 502 are mounted on the outer wall of the top of the housing 1, spaced apart, with the distance between them matching the length of the spray pipe. Each of the two motors 502 corresponds to one of the two linear motion mechanisms. The two motors 502 drive two lead screws and nuts to move linearly along their respective lead screws 501. These lead screws and nuts then move the spray pipe vertically, contributing to smooth movement.

[0065] This invention also provides a refrigeration system, which includes the aforementioned evaporative condenser with adjustable spray position. The evaporative condenser includes a housing 1, a heat exchange coil 2, a spray assembly 3, a water supply assembly 4, a drive unit 5, and a temperature detection unit.

[0066] Cooling water in the water storage tank 7 can be pumped to the spray assembly 3 by the circulating water pump 401. The spray assembly 3 has multiple nozzles, through which the cooling water is sprayed onto the surface of the heat exchange coil 2 to form a thin water film. The rotation of the fan 8 causes the air entering the housing 1 from the bottom side wall of the housing 1 to move vertically upwards. The water film on the surface of the heat exchange coil 2 evaporates under the action of the rapidly flowing air. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor flows into the heat exchange coil 2. During the process of flowing from the top end of the heat exchange coil 2 to the bottom end, the gaseous refrigerant exchanges heat with the water film on the surface of the heat exchange coil 2.

[0067] The temperature detection unit includes multiple temperature sensors 6, with one sensor 6 installed on each layer of the coil. Each temperature sensor 6 collects the temperature of its corresponding layer of the coil. Multiple temperature sensors 6 simultaneously collect the temperatures of multiple layers of coils. The controller compares the detected temperatures of multiple coils with preset temperatures to determine the preset position on the heat exchange coil 2. The preset position refers to the position where the refrigerant in the heat exchange coil 2 begins to change from a gaseous state to a liquid state, that is, the position where droplets first appear, which is also the position where the refrigerant begins to transition from a higher-temperature cooling process to a lower-temperature condensation process.

[0068] The driving component 5 can drive the spray assembly 3 to move vertically within the housing 1. The driving component 5 drives the spray assembly 3 to a preset position on the heat exchange coil 2. At this preset position, the spray assembly 3 sprays water onto the heat exchange coil 2. The sprayed water does not contact the hotter areas of the heat exchange coil 2; a portion of the heat exchange coil 2 below the spray assembly 3 is sprayed with water to form a water film. The water film formed on the surface of the heat exchange coil 2 evaporates under the action of rapidly flowing air, absorbing heat from the refrigerant within the heat exchange coil 2. The gaseous refrigerant condenses into a liquid refrigerant. The liquid refrigerant flows through the expansion valve and into the evaporator. The evaporator absorbs heat from the heat source, achieving evaporation and heat absorption of the liquid refrigerant within the evaporator, thus achieving a cooling effect on the heat source.

[0069] The spray assembly 3 sprays water at a preset position on the heat exchange coil 2, effectively preventing the spray water from contacting the high-temperature areas on the heat exchange coil 2. This effectively reduces the formation of scale on the surface of the heat exchange coil 2 and ensures the heat exchange efficiency of the evaporative condenser.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An evaporative condenser with adjustable spray position, characterized in that, include: The enclosure, heat exchange coils, spray assembly, water supply assembly, drive components, and temperature detection unit; The heat exchange coil and the spray assembly are located inside the box. The water supply assembly is connected to the water inlet of the spray assembly. The movable end of the drive component is connected to the spray assembly. The drive component is used to drive the spray assembly to move vertically to a preset position. The heat exchange coil has multiple layers of coils, with adjacent layers of coils connected together, and the temperature detection unit is used to detect the temperature of the coil. The spray assembly includes a spray pipe and multiple nozzles; the temperature detection unit includes multiple temperature sensors, which are arranged one-to-one with the multi-layer coils; the evaporative condenser also includes a controller; the drive unit and the multiple temperature sensors are all connected to the controller; the controller controls the drive unit to move the spray assembly to a preset position based on the comparison result between the detected temperature values ​​of the multiple temperature sensors and the preset temperature value. The water supply assembly includes a water supply pipeline, a circulating water pump, and a telescopic pipe; one end of the water supply pipeline is connected to the bottom of the tank, and the other end is connected to the inlet of the spray pipe through the telescopic pipe, the telescopic pipe being located inside the tank, and the circulating water pump being located in the water supply pipeline; the water supply assembly also includes a control valve, which is located in the water supply pipeline, and the opening degree of the control valve is adjusted based on the vertical position of the spray assembly relative to the heat exchange coil; The preset temperature is the temperature at which the gaseous refrigerant in the heat exchange coil just begins to condense into liquid refrigerant. The position of the coil when the collected coil temperature matches the preset temperature is the preset position.

2. The evaporative condenser with adjustable spray position according to claim 1, characterized in that, The plurality of nozzles are spaced apart from each other on the spray pipe, and the nozzles are in communication with the spray pipe; The movable end of the driving component is connected to the spray pipe, and the movable end can drive the spray pipe to move in the vertical direction.

3. The evaporative condenser with adjustable spray position according to claim 1, characterized in that, The heat exchange coil is provided with a clearance portion that extends from the top of the heat exchange coil toward the bottom of the heat exchange coil, and the spray assembly moves along the area where the clearance portion is located.

4. The evaporative condenser with adjustable spray position according to claim 1, characterized in that, The circulating water pump is a centrifugal pump, rotor pump, axial flow pump, or gear pump.

5. The evaporative condenser with adjustable spray position according to claim 2, characterized in that, The driving component includes a motor and a linear motion mechanism; The motor is located on the outer wall of the housing, the drive end of the motor is connected to the linear motion mechanism, and the movable end of the linear motion mechanism is connected to the spray pipe.

6. A refrigeration system, characterized in that, Including an evaporative condenser with adjustable spray position as described in any one of claims 1 to 5.

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