Low-temperature countercurrent air-cooled condensing unit
By introducing an air humidification module and an open air outlet structure into the air-cooled condensing unit, the problems of high energy consumption, dirt blockage and scaling of the air-cooled condensing unit are solved, low-temperature condensation and efficient operation are achieved, and system performance is improved.
Patent Information
- Application Number
- CN202422545754.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-22
AI Technical Summary
Existing air-cooled condensing units have problems such as high energy consumption, high condensing temperature, easy clogging and scaling, resulting in low system efficiency and rapid performance degradation.
A low-temperature countercurrent air-cooled condensing unit is designed. An air humidification module and a water storage tank are installed inside the condensing unit body. Water is supplied to the sprinkler head through pipelines for humidification. Gaseous and liquid working fluid ports are set on the finned curtain tube condensing heat exchanger. Combined with a fan system and an open air outlet bin, isenthalpic humidification and impurity blocking are achieved to prevent dust adhesion and water droplet scaling.
Effectively lower the condensing temperature, reduce compressor energy consumption, prevent heat exchanger clogging and scaling, improve system efficiency and extend equipment life.
Smart Images
Figure CN223376380U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air-cooling condensing units, and particularly relates to an anti-clogging and anti-scaling, low-temperature countercurrent air-cooling condensing unit. Background Art
[0002] Currently, there are generally two types of air-cooled condensing units. One is a conventional air-cooled condensing unit, where the condensing temperature of the working fluid is more than 10°C higher than the ambient dry-bulb temperature. This high condensing temperature results in a high compressor pressure ratio under the same operating conditions, leading to high system energy consumption. The other type of air-cooled condensing unit is equipped with a water atomizer at the unit's air inlet. The condensing temperature of the working fluid in this unit is generally more than 10°C higher than the ambient wet-bulb temperature, achieving a lower condensing temperature. Under the same operating conditions, the compressor pressure ratio is small, and the system energy consumption is low. However, when the atomized water droplets evaporate on the fin-curtain tube condensing heat exchanger, the minerals in the water remain on the fin curtain, causing scaling, a reduction in the heat transfer coefficient, and rapid performance degradation of the unit. The fin-curtain tube condensing heat exchangers of the above two units are directly exposed to the atmosphere. During operation, dust and debris can easily adhere to the heat exchanger with the airflow, causing fouling and blockage of the heat exchanger, affecting the condensation effect.
[0003] In summary, the current use of air-cooled condensing units has problems such as high energy consumption, low system efficiency, high condensing temperature, easy clogging and scaling, and rapid performance degradation. Technical personnel in this field urgently need to improve this type of equipment. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the present invention provides a low-temperature countercurrent air-cooled condensing unit, the purpose of which is to solve the problems pointed out in the background technology.
[0005] The technical solution adopted by this technical solution to solve its technical problems is:
[0006] A low-temperature countercurrent air-cooled condensing unit, comprising a condensing unit body, a fan system, an air outlet bin, an air humidification module, an air inlet, and a finned curtain tube condensing heat exchanger;
[0007] The air inlet is arranged on the inner side wall of the condensing unit body, and an air humidification module is arranged near the air inlet. A water storage tank is arranged below the air humidification module, and a circulation pump and a pipeline are arranged in conjunction with the water storage tank. The pipeline extends to the top of or inside the air humidification module to humidify it.
[0008] The finned curtain tube condensing heat exchanger is arranged above the air humidifying module, and the finned curtain tube condensing heat exchanger is provided with a gaseous working medium inlet and a liquid working medium outlet;
[0009] A fan system is provided inside the air outlet bin, and the four sides or the top of the air outlet bin are open or semi-open.
[0010] The air humidification modules are at least two groups and are arranged vertically symmetrically.
[0011] A spray head is provided at the end of the pipeline, and the spray head is arranged toward the air humidification module; the air humidification module is an evaporative heat dissipation filler or a wet curtain humidifier.
[0012] The fin curtain tube condensing heat exchanger is placed horizontally.
[0013] High-pressure chambers are provided at both ends of the air humidification module, a high-pressure fan is provided inside the high-pressure chamber, and the high-pressure fan is arranged toward the fin curtain gap inside the air humidification module. A vertical baffle is provided in the middle of the air humidification module, and impurity removal gaps are respectively provided on the left and right sides of the vertical baffle, and an external discharge port is provided at the bottom of the impurity removal gap.
[0014] The air outlet bin includes a frame with an open periphery. A ventilation valve is provided on the top of the frame. The ventilation valve includes a fixing part and a driving part. A vent is provided on the fixing part. A driven component is provided on the driving part to cooperate with the vent. The driving part is connected to the driving device to cause the driving part to move and realize whether the vent is blocked or not.
[0015] Through the above structural setting, compared with the existing technology, the beneficial effects of this low-temperature countercurrent air-cooled condensing unit are: the air inlet is set on the internal side wall of the condensing unit body, and an air humidification module is set near the air inlet. A water storage tank is correspondingly provided below the air humidification module, and a circulation pump and pipeline are provided in conjunction with the water storage tank. The pipeline extends to the top or inside of the air humidification module to humidify it; the fin curtain tube condensation heat exchanger is set above the air humidification module, and the fin curtain tube condensation heat exchanger is provided with a gaseous working fluid inlet and a liquid working fluid outlet; a fan system is provided inside the air outlet bin, and the four sides or top of the air outlet bin are open or semi-open. After the above structural settings, 1. After the air entering the unit is humidified by the air humidification module, the air temperature is reduced to close to the ambient wet-bulb temperature, which can effectively reduce the condensation temperature of the working medium flowing through the fin-curtain-tube heat exchanger tube, thereby improving the system efficiency; 2. The condensing temperature of the unit is reduced, and the compression ratio of the compressor is reduced under the same working conditions, and the power consumption of the compressor is reduced; 3. The unit is equipped with an air humidification module to purify the air, prevent dust and debris from adhering to the fin-curtain-tube condensing heat exchanger with the airflow, avoid the heat exchanger from being dirty and blocked, and also realize high-pressure cleaning of the air humidification module; 4. The air humidification module also has the functions of diversion and water blocking, and no small water droplets enter the unit, which can avoid scaling of the fin-curtain-tube condensing heat exchanger and effectively alleviate the performance degradation of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1This is a schematic diagram of the main internal structure of the utility model;
[0017] Figure 2 This is a side view of the internal structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the top structure of the air outlet bin;
[0019] Figure 4 This is a schematic diagram of the structure of the air outlet bin drive unit;
[0020] In the accompanying drawings, 1. Condensing unit body, 11. Fin curtain tube condensing heat exchanger, 12. Liquid working medium outlet, 13. Gaseous working medium inlet, 2. Fan system, 21. Fan blades, 3. Air outlet bin, 31. Frame, 32. Fixed part, 33. Enclosed area, 34. Ventilation port, 35. Driving part, 36. Frame, 37. Driven component, 38. Driven gear, 4. Sprinkler head, 5. Air humidification module, 51. Fin curtain, 52. Baffle, 53. Debris removal gap, 54. External outlet, 6. Air inlet, 7. Water storage tank, 8. Circulation pump, 81. Pipeline, 9. Driving motor, 91. Driving gear, 92. Motor fixing bracket. DETAILED DESCRIPTION
[0021] The following is a detailed description of the present invention through specific embodiments. Those familiar with the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. However, it should be noted that the following specific implementation methods do not limit the technical solution. Under the guidance of the following technical solution, those skilled in the art can also make further technical extensions. The scope of protection of this patent application shall be based on the claims.
[0022] Example 1: A low-temperature countercurrent air-cooled condensing unit, such as Figure 1 As shown, it includes a condensing unit body 1, a fan system 2, an air outlet bin 3, an air humidification module 5, an air inlet 6, and a fin curtain tube condensing heat exchanger 11.
[0023] The air inlet 6 is arranged on the inner side wall of the condensing unit body 1, and an air humidification module 5 is arranged near the air inlet 6. In this embodiment, the air humidification modules 5 are at least two groups and are arranged vertically symmetrically. A water storage tank 7 is correspondingly arranged below the air humidification module 5, and a circulation pump 8 and a pipeline 81 are arranged in conjunction with the water storage tank 7. The pipeline 81 extends from the left and right sides to the top of the air humidification module 5. A plurality of spray heads 4 are arranged at the end of the pipeline 81, and the spray heads 4 are arranged toward the air humidification module 5; the air humidification module 5 is an evaporative heat dissipation filler or a wet curtain humidifier. This embodiment adopts a spiral wet curtain humidifier, which is arranged at intervals by a plurality of fin curtains 51. After the air flow enters the equipment through the air inlet 6, it is humidified isothermally by the air humidification module 5; the fin curtain tube condensing heat exchanger 11 is arranged above the air humidification module 5, such as Figure 2 As shown, there are multiple finned tube condensing heat exchangers 11 arranged horizontally, and each finned tube condensing heat exchanger 11 is provided with a gaseous working medium inlet 13 and a liquid working medium outlet 12. After the gaseous medium enters the finned tube condensing heat exchanger 11, it is condensed, and the obtained condensed water is discharged through the liquid working medium outlet 12.
[0024] After the above structure is set up, the air flow enters the air flow air humidification module 5 through the air inlet 6 and is humidified at the same enthalpy. The air temperature is reduced to a temperature close to the ambient wet-bulb temperature. This cooling can effectively reduce the condensation temperature of the working medium flowing through the fin curtain tube heat exchanger 11 tube, thereby improving the system efficiency; when the condensation temperature of the unit is reduced, the compression ratio of the compressor is reduced under the same working conditions, and the power consumption of the compressor is reduced; furthermore, the installation of the air humidification module 5 can purify the air entering the interior of the equipment, prevent dust and debris from adhering to the fin curtain tube condensation heat exchanger with the air flow, avoid the heat exchanger from being dirty and blocked, and can also achieve high-pressure cleaning of the air humidification module; the air humidification module 5 also has the functions of diversion and water blocking, and no small water droplets enter the interior of the unit, which can avoid scaling of the fin curtain tube condensation heat exchanger and effectively alleviate the performance degradation of the heat exchanger.
[0025] The air outlet bin 3 is arranged on the top of the condensing unit body 1, and the fan system 2 is arranged inside the air outlet bin 3. The four sides of the air outlet bin 3 are open, and the top of the air outlet bin 3 is semi-open. The purpose of designing the top of the air outlet bin 3 to be semi-open is to use the top surface of the air outlet bin 3 as an exhaust vent when necessary. When it rains or snows outside, in order to ensure the cleanliness of the air outlet bin 3 and the inside of the condensing unit body 1, the utility model can realize the closure of the top surface of the air outlet bin 3. The specific driving structure is as follows Figure 3 、 4As shown, the air outlet bin 3 includes a frame 31, the periphery of the frame 31 is an open design, and a ventilation valve is provided on the top of the frame 31. The ventilation valve includes a circular fixing portion 31 and a driving portion 35. A number of closed areas 33 and vents 34 are evenly distributed on the fixing portion 31, and the closed areas 33 and vents 34 are arranged at intervals; a driven component 37 is provided on the driving portion 35 to cooperate with the vents 34, and the driven component 37 rotates on the fixing portion 31 to realize the relative rotation between the two, and a frame 36 is provided on the periphery of the driven component 37, and a driven tooth 38 is provided on the frame 36. A motor fixing frame 92 is also provided on the frame 31, and a driving motor 9 is fixed on the motor fixing frame 92. A driving gear 91 is provided on the top of the driving motor, and the driving motor 9 drives the driving gear 91 to rotate, and at the same time drives the driven component 37 and the vent 34 to be blocked or not, thereby realizing axial ventilation.
[0026] When necessary, the above structure can be used to increase the ventilation volume and improve the cooling efficiency.
[0027] Example 2: Based on Example 1, the present invention realizes humidification of the air flow inside the condensing unit body 1 and the blocking of impurities by setting an air humidification module 5. However, this operation mode will block all external impurities on the air humidification module 5. After long-term use, the ventilation rate of the air humidification module 5 will be reduced. In order to avoid the above problems, Figure 2 As shown, the present technical solution is provided with a high-pressure chamber 10 at both ends of the air humidification module, and a plurality of high-pressure fans 101 are provided inside the high-pressure chamber 10. The high-pressure fans 101 are arranged toward the gap of the fin curtain 51 inside the air humidification module 5, and a vertical baffle 52 is provided in the middle of the air humidification module 5. The left and right sides of the vertical baffle 52 are respectively provided with a debris removal gap 53, and the bottom of the debris removal gap 53 is provided with an external discharge port 54. Through the above structural arrangement, the external discharge port 54 can be connected to an external collection device or a negative pressure collection device. When the low-temperature countercurrent air-cooled condensing unit is in a non-working state, the plurality of high-pressure fans 101 provided inside the high-pressure chamber 10 are started in a pulse state, and the impurities in the gap of the fin curtain 51 are blown out by the high-pressure fans 101 and diverted downward at the debris removal gap 53 and discharged.
[0028] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.
Claims
1. A low-temperature countercurrent air-cooled condensing unit, characterized by: It includes the condensing unit body, fan system, air outlet bin, air humidification module, air inlet, and fin curtain tube condensing heat exchanger; The air inlet is arranged on the inner side wall of the condensing unit body, and an air humidification module is arranged near the air inlet. A water storage tank is arranged below the air humidification module, and a circulation pump and a pipeline are arranged in conjunction with the water storage tank. The pipeline extends to the top of or inside the air humidification module to humidify it. The finned curtain tube condensing heat exchanger is arranged above the air humidifying module, and the finned curtain tube condensing heat exchanger is provided with a gaseous working medium inlet and a liquid working medium outlet; A fan system is provided inside the air outlet bin, and the four sides or the top of the air outlet bin are open or semi-open.
2. The low-temperature countercurrent air-cooled condensing unit according to claim 1, characterized in that: The air humidification modules are at least two groups and are arranged vertically symmetrically.
3. The low-temperature countercurrent air-cooled condensing unit according to claim 1, characterized in that: A spray head is provided at the end of the pipeline, and the spray head is arranged toward the air humidification module; the air humidification module is an evaporative heat dissipation filler or a wet curtain humidifier.
4. The low-temperature countercurrent air-cooled condensing unit according to claim 1, characterized in that: The fin curtain tube condensing heat exchanger is placed horizontally.
5. The low-temperature countercurrent air-cooled condensing unit according to claim 1, characterized in that: High-pressure chambers are provided at both ends of the air humidification module, a high-pressure fan is provided inside the high-pressure chamber, and the high-pressure fan is arranged toward the fin curtain gap inside the air humidification module. A vertical baffle is provided in the middle of the air humidification module, and impurity removal gaps are respectively provided on the left and right sides of the vertical baffle, and an external discharge port is provided at the bottom of the impurity removal gap.
6. The low-temperature countercurrent air-cooled condensing unit according to claim 1, characterized in that: The air outlet bin includes a frame with an open periphery. A ventilation valve is provided on the top of the frame. The ventilation valve includes a fixing part and a driving part. A vent is provided on the fixing part. A driven component is provided on the driving part to cooperate with the vent. The driving part is connected to the driving device to cause the driving part to move and realize whether the vent is blocked or not.