An evaporative condenser with built-in multi-layered independent chambers

Abstract

This utility model discloses an evaporator-condenser with built-in multi-layer independent chambers, including a main frame. From top to bottom, the main frame has an exhaust chamber, a spray chamber, a heat exchange chamber, and a liquid collection chamber. The heat exchange chamber contains a heat exchange coil, the exhaust chamber contains a condensing fan, and the spray chamber contains a spray system. The heat exchange coil is connected to the compressor of a chiller unit via an exhaust pipe. The exhaust pipe is equipped with an exhaust pressure sensor, an ambient temperature sensor, and a control module. The control module is electrically connected to each actuator and sensor. During operation, the condensing fan exhausts air upwards, and the spray system sprays the medium downwards, removing heat through dual heat exchange channels. The control module intelligently adjusts the equipment's operating status based on the detection data. This utility model has a clearly defined layered structure, high heat exchange efficiency, wide applicability, and intelligent control, effectively solving the problems of poor heat exchange effect and inconvenient control in existing technologies.

Description

Technical Field

[0001] This article relates to an evaporator-condenser with built-in multi-layer independent chambers. Background Technology

[0002] As a new type of condensation solution, evaporative condensers combine the advantages of air cooling and water cooling. Compared with traditional single air-cooled or water-cooled condensers, they not only have a better condensation effect, but also a wider range of adaptability to different temperature and humidity environments. Therefore, they are increasingly widely used in refrigeration units, industrial cooling systems and other fields.

[0003] In the existing structural design of evaporative condensers, the core cooling method is to spray the condenser tubes with a spray system to cool them down. To improve the spraying effect, the existing solutions usually adopt a design in which the fan blowing direction is the same as the spraying direction of the spraying medium.

[0004] An attempt was made to push the spray medium to contact the condenser tube more fully through unidirectional airflow. However, this design has obvious technical limitations: on the one hand, although unidirectional airflow and liquid flow can increase the spray coverage to a certain extent, it will make it difficult to quickly discharge the high temperature and high humidity gas formed by evaporation during the spraying process. Some high temperature gas is easy to stay inside the equipment, which will affect the heat exchange efficiency.

[0005] On the other hand, the existing structure lacks a real-time monitoring and linkage control mechanism for key operating parameters (such as compressor exhaust pressure and ambient temperature), and cannot dynamically adjust the fan speed and spray flow according to the actual working conditions. This results in the equipment either having "excessive energy consumption" or a decrease in condensation effect due to untimely control under different environmental conditions.

[0006] In addition, the existing structure lacks an effective design for sensible heat recovery and discharge of the unevaporated medium (i.e., unevaporated spray water) after spraying. It relies solely on natural cooling without optimizing the heat dissipation path, which results in the inefficient removal of the sensible heat carried by this part of the medium, further limiting the improvement of the overall heat exchange performance. Utility Model Content

[0007] This invention aims to solve the technical problems of existing evaporative condensers having a single heat exchange channel and insufficient heat exchange efficiency. To achieve the above objective, this invention provides an evaporative condenser with built-in multi-layer independent chambers, the specific technical solution of which is as follows:

[0008] An evaporator-condenser with built-in multi-layer independent chambers includes a main frame, and the main frame is provided with an exhaust chamber, a spray chamber, a heat exchange chamber and a liquid collection chamber from top to bottom. The heat exchange chamber is provided with a heat exchange coil, and the exhaust chamber is provided with a condensing fan.

[0009] The heat exchange coil is connected to the compressor of the chiller unit through an exhaust pipe, and an exhaust pressure sensor is installed in the exhaust pipe to detect the compressor exhaust pressure.

[0010] The ambient temperature sensor is used to detect the ambient temperature, and the control module is electrically connected to the condenser fan, spray water pump, exhaust pressure sensor, and ambient temperature sensor.

[0011] The spray chamber is equipped with a spray system, the condenser fan is located above the spray system, the spray system is connected to the spray water pump, and the spray water pump is located in the liquid collection chamber at the bottom.

[0012] Furthermore, the heat exchange chamber is equipped with multiple mounting baffles, and the heat exchange coils are fixed in the heat exchange chamber through the mounting baffles. The multiple mounting baffles can provide multi-point and stable support for the heat exchange coils, preventing the heat exchange coils from shaking or shifting during equipment operation and ensuring that the heat exchange coils always maintain the preset arrangement.

[0013] Furthermore, the heat exchange coils are arranged in a serpentine pattern, with adjacent layers of coils running in opposite directions. This serpentine arrangement maximizes the length of the heat exchange coils within the heat exchange chamber, significantly increasing the contact area between the coils and the spray water and airflow, thereby enhancing the heat exchange rate per unit time. The opposite direction of adjacent layers prevents upper coils from "blocking" lower coils, eliminates dead zones in airflow and spray water flow, ensures that spray water evenly covers the surface of each coil layer, and allows the airflow to fully contact the outer wall of the coils, effectively improving heat exchange uniformity.

[0014] Furthermore, the spray system includes a main spray pipe and several branch spray pipes, with spray holes evenly distributed on the branch spray pipes. The main spray pipe, as the main flow channel, can stably deliver spray water, while the several branch spray pipes can disperse the water flow to various areas of the heat exchange chamber. Combined with the evenly distributed spray holes on the branch pipes, the spray water can cover the entire heat exchange coil area with a uniform flow rate and density, avoiding localized insufficient spraying.

[0015] Furthermore, the outer wall of the liquid collection chamber directly exchanges heat with the environment, and a water inlet is provided at the bottom of the liquid collection chamber. The direct heat exchange between the outer wall of the liquid collection chamber and the environment allows for the rapid removal of sensible heat carried by the unevaporated spray water within the liquid collection chamber by utilizing the natural cooling effect of the ambient air. This enables the spray water to be cooled to near the ambient temperature before being recycled.

[0016] Furthermore, the exhaust chamber's air outlet is equipped with a protective net. The protective net can effectively prevent foreign objects from the external environment from entering the exhaust chamber through the air outlet.

[0017] Furthermore, an inspection port is provided on the outer side of the main frame, corresponding to the heat exchange chamber and the liquid collection chamber. The inspection port directly connects to these two core functional chambers, allowing personnel to quickly enter or observe the heat exchange chamber without disassembling the entire main frame structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects.

[0019] I. Dual Heat Exchange Channels Improve Efficiency: High-temperature and high-humidity gas is discharged through a top condenser fan, which simultaneously reduces the internal pressure, making it easier for the spray medium to evaporate. The sensible heat of the spray medium is then collected by natural cooling in the bottom liquid collection chamber. This dual-channel approach rapidly removes heat, significantly improving heat exchange efficiency.

[0020] II. Structural Design Optimization: The multi-layer independent chambers have clear division of labor, and the heat exchange coils are arranged in a serpentine reverse pattern. Combined with a uniformly distributed spray system, this ensures heat exchange uniformity and avoids dead zones in airflow. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the heat exchange process of an evaporator-condenser with built-in multi-layer independent chambers;

[0022] Figure 2 This is a schematic diagram of the heat exchange coil distribution of an evaporator-condenser with built-in multi-layer independent chambers;

[0023] In the diagram: 1. Main frame, 2. Condensing fan, 3. Spray system, 4. Heat exchange coil, 5. Liquid collection chamber. Detailed Implementation

[0024] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0025] Example 1: As Figure 1-2 As shown, an evaporator condenser with multiple independent chambers has a main frame 1 made of carbon steel welded together. It is divided into an exhaust chamber, a spray chamber, a heat exchange chamber and a liquid collection chamber 5 from top to bottom. Each chamber is separated by a sealing partition to ensure clear airflow and liquid flow paths.

[0026] The heat exchange chamber is equipped with three mounting baffles. The heat exchange coils 4 are made of corrosion-resistant stainless steel and are fixed by the mounting baffles in a serpentine arrangement. The heat exchange coils 4 in adjacent layers have opposite directions, which effectively increases the heat exchange area.

[0027] The liquid inlet of heat exchange coil 4 is connected to the compressor outlet of the chiller unit through an exhaust pipe, and an exhaust pressure sensor is installed on the exhaust pipe.

[0028] The sprinkler system 3 includes a main sprinkler pipe and four branch sprinkler pipes. Sprinkler holes with a diameter of 2mm are evenly distributed on the branch sprinkler pipes. The sprinkler system 3 is connected to the sprinkler water pump through a pipe, and the sprinkler water pump is fixedly installed in the collection chamber 5. A water inlet is provided at the bottom of the collection chamber 5 for regular water replenishment and replacement.

[0029] A condenser fan 2 is installed inside the exhaust chamber, located above the spray system 3. A stainless steel protective mesh is installed at the air outlet of the exhaust chamber to prevent foreign objects from entering.

[0030] An ambient temperature sensor is installed on the outside of the main frame 1 to detect the external ambient temperature. The control module uses a Siemens S7-200 PLC controller, which is installed in the control box on the side of the main frame 1. The control module is electrically connected to the condenser fan 2, the spray water pump, the exhaust pressure sensor, and the ambient temperature sensor via wires.

[0031] During operation, the control module receives the compressor discharge pressure signal detected by the discharge pressure sensor and the ambient temperature signal detected by the ambient temperature sensor in real time. When the discharge pressure exceeds the set threshold or the ambient temperature rises, the control module increases the speed of the condenser fan 2 and the output flow rate of the spray water pump to accelerate heat removal.

[0032] When the exhaust pressure is lower than the set threshold and the ambient temperature is low, the control module reduces the speed of the condenser fan 2 and the output flow of the spray water pump 12 to save energy.

[0033] Spray water is sprayed from the spray holes of the spray system 3 and flows downward over the surface of the heat exchange coil 4, carrying away the heat of the refrigerant in the heat exchange coil 4. Some of the spray water evaporates into gas and is discharged upward under the action of the condenser fan 2. The unevaporated spray water flows downward into the liquid collection chamber 5 and is cooled to room temperature by natural cooling before being recycled.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An evaporative condenser with built-in multi-layered independent chambers, characterized in that, It includes a main frame, which is provided from top to bottom as an exhaust chamber, a spray chamber, a heat exchange chamber and a liquid collection chamber. The heat exchange chamber is provided with a heat exchange coil, and the exhaust chamber is provided with a condensing fan. The heat exchange coil is connected to the compressor of the chiller unit through an exhaust pipe, and an exhaust pressure sensor is installed in the exhaust pipe to detect the compressor exhaust pressure. The ambient temperature sensor is used to detect the ambient temperature, and the control module is electrically connected to the condenser fan, spray water pump, exhaust pressure sensor, and ambient temperature sensor. The spray chamber is equipped with a spray system, the condenser fan is located above the spray system, the spray system is connected to the spray water pump, and the spray water pump is located in the liquid collection chamber at the bottom.

2. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 1 wherein, The heat exchange chamber is equipped with multiple mounting baffles, and the heat exchange coil is fixed in the heat exchange chamber by the mounting baffles.

3. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 1 wherein, The heat exchange coils are arranged in a serpentine pattern, and the heat exchange coils in adjacent layers have opposite directions.

4. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 3 wherein, The spraying system includes a main spray pipe and several branch spray pipes, with spray holes evenly distributed on the branch spray pipes.

5. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 3 wherein, The outer wall of the liquid collection chamber directly exchanges heat with the environment, and a water inlet is provided at the bottom of the liquid collection chamber.

6. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 3 wherein, The exhaust vent of the exhaust chamber is equipped with a protective net.

7. An evaporative condenser with built-in multi-layered independent chambers as claimed in claim 3 wherein, The main frame is provided with an inspection port on its outer side, which is provided for the heat exchange chamber and the liquid collection chamber.

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