Efficient plate-fin evaporative condenser

Abstract

The utility model provides an efficient plate-fin evaporative condenser which comprises a condenser body, a plate-fin heat exchanger fixedly arranged in the condenser body, a refrigerant inlet and a refrigerant outlet which are communicated with the plate-fin heat exchanger, and a spray pipe fixedly arranged above the plate-fin heat exchanger, the spraying pipe is communicated with a water collecting cavity in the bottom of the condenser body through a water pipe, a circulating water pump is arranged on the water pipe, a filtering device is arranged at the joint of the water pipe and the water collecting cavity, and the condenser is high in heat transfer efficiency, compact, light and handy.

Description

Technical Field

[0001] This application relates to the field of condenser manufacturing, and more specifically, to a high-efficiency plate-fin evaporative condenser. Background Technology

[0002] With customers increasingly demanding higher standards for equipment and placing greater emphasis on energy efficiency, more and more companies in the refrigeration industry are choosing high-efficiency evaporative condensers.

[0003] An evaporative condenser is the main heat exchanger in a refrigeration system. Its working principle is as follows: the high-temperature, high-pressure refrigerant gas discharged from the compressor passes through the condenser coils in the evaporative condenser, where the high-temperature gaseous refrigerant exchanges heat with the sprayed water and air outside the coils. The gaseous refrigerant enters the condenser coils from the top and is gradually condensed into liquid refrigerant from top to bottom. The accompanying induced draft fan ensures that the sprayed water evenly covers the surface of the condenser coils. The heated sprayed water partially vaporizes into a gaseous state, and the latent heat of vaporization of the water is used to expel a large amount of heat through the fan.

[0004] like Figure 1 As shown, however, the condenser coils of currently manufactured evaporative condensers are all made of seamless elliptical tubes or seamless steel tubes, which have disadvantages such as poor heat exchange effect, large size, and difficulty in manufacturing.

[0005] Therefore, those skilled in the art need to improve existing condensers to overcome the aforementioned defects. Utility Model Content

[0006] The main objective of this application is to provide a high-efficiency plate-fin evaporative condenser that is efficient in heat transfer, compact, and lightweight.

[0007] To achieve the above objectives, in a first aspect, this application provides a high-efficiency plate-fin evaporative condenser, comprising a condenser body, a plate-fin heat exchanger fixedly disposed within the condenser body, a refrigerant inlet and a refrigerant outlet connected to the plate-fin heat exchanger, and a spray pipe fixedly disposed above the plate-fin heat exchanger. The spray pipe is connected to a water collection chamber at the bottom of the condenser body via a water pipe, a circulating water pump is provided on the water pipe, and a filter device is provided at the connection between the water pipe and the water collection chamber.

[0008] Optionally, a plurality of nozzles are provided at the bottom of the spray pipe, and the nozzles are evenly distributed along the length of the spray pipe.

[0009] Optionally, the filter device is detachably connected to the condenser body, and the condenser body is provided with an inspection door.

[0010] Optionally, it also includes a condenser fan, which is disposed above the spray pipe.

[0011] Optionally, it also includes a controller and a temperature sensor for detecting the water temperature in the water collection chamber, wherein the controller is electrically connected to the temperature sensor and the condenser fan respectively.

[0012] Optionally, it also includes a water distribution plate fixedly disposed between the spray pipe and the plate-fin heat exchanger.

[0013] Optionally, the water distribution plate includes a water distribution plate body densely covered with water drop holes and flanged baffles fixedly installed on the four sides of the water distribution plate body. The projection of the plate-fin heat exchanger on the horizontal plane falls into the projection of the water distribution plate body on the horizontal plane.

[0014] Optionally, the filtration device is a precision filter.

[0015] The high-efficiency plate-fin evaporative condenser provided by this utility model has the following advantages compared with the prior art:

[0016] 1. High heat transfer efficiency: The fins cause the boundary layer to break down continuously due to the disturbance of the fluid, resulting in a large heat transfer coefficient; at the same time, the thin baffles and fins have high thermal conductivity, which enables the plate-fin heat exchanger to achieve a very high efficiency.

[0017] 2. Compact: Due to the extended secondary surface of the plate-fin heat exchanger, its surface area is greatly increased.

[0018] 3. Lightweight: Due to the small size of plate-fin heat exchangers, they are easy and convenient to install into evaporative condensers, without having to consider too many structural design issues caused by gravity.

[0019] 4. Furthermore, the problem of easy clogging in plate-fin heat exchangers is solved by setting up a filtration device. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0021] Figure 1 This is a schematic diagram of existing technology;

[0022] Figure 2 This is a schematic diagram of the present invention.

[0023] The components include: 1. Condenser body; 2. Plate-fin heat exchanger; 3. Refrigerant inlet; 4. Refrigerant outlet; 5. Spray pipe; 6. Spray head; 7. Water pipe; 8. Circulating water pump; 9. Filter device; 10. Water distribution tray; 11. Condenser fan. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] In addition, the term "multiple" should mean two or more.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figure 2As shown, a high-efficiency plate-fin evaporative condenser includes a condenser body 1, a plate-fin heat exchanger 2 fixedly installed inside the condenser body 1, a refrigerant inlet 3 and a refrigerant outlet 4 connected to the plate-fin heat exchanger 2, and a spray pipe 5 fixedly installed above the plate-fin heat exchanger 2. The spray pipe 5 is connected to a water collection chamber at the bottom of the condenser body 1 via a water pipe 7. A circulating water pump 8 is installed on the water pipe 7. Since the plate-fin heat exchanger 2 is a microchannel type and is prone to clogging, a filter device 9 is installed at the connection between the water pipe 7 and the water collection chamber. To improve the filtration effect, a precision filter is preferred.

[0031] By replacing the original elliptical tube and seamless steel tube heat exchangers with plate-fin heat exchangers 2, the heat transfer efficiency is high. Due to the disturbance of the fluid by the fins, the boundary layer is continuously broken, resulting in a large heat transfer coefficient. At the same time, because the baffles and fins are very thin, they have high thermal conductivity, enabling plate-fin heat exchangers 2 to achieve very high efficiency. It is compact because plate-fin heat exchangers 2 have an expanded secondary surface, which greatly increases its surface area. It is lightweight because plate-fin heat exchangers 2 are very small in size, making it simple and convenient to install in evaporative condensers, without having to consider too many structural design problems caused by gravity in evaporative condensers.

[0032] To improve the uniformity of heat exchange, a number of nozzles 6 are provided at the bottom of the spray pipe 5. The nozzles 6 are evenly distributed along the length of the spray pipe 5. In addition, to further improve the effect and uniformity of spray heat dissipation, a water distribution plate 10 is fixedly installed between the spray pipe 5 and the plate-fin heat exchanger 2. The water distribution plate 10 includes a body of the water distribution plate 10 with densely distributed water drop holes and flanged baffles fixedly installed on the four sides of the body of the water distribution plate 10. The projection of the plate-fin heat exchanger 2 on the horizontal plane falls into the projection of the body of the water distribution plate 10 on the horizontal plane. The cooling water sprayed by the nozzles 6 first passes through the water distribution plate 10, is evenly distributed, and then can uniformly exchange heat on the outside of the plate-fin heat exchanger 2.

[0033] To facilitate cleaning and maintenance of the filter device 9, the filter device 9 is detachably connected to the condenser body 1, and the condenser body 1 is provided with an inspection door.

[0034] To enable the condensate to be recycled, a condenser fan 11 is also included. The condenser fan 11 is located above the spray pipe 5. The condensate is sprayed onto the surface of the heat exchanger by the circulating water pump 8 through the nozzle 6 for heat exchange. After the water temperature rises after heat exchange, it is cooled by the condenser fan 11, thereby achieving the purpose of recycling.

[0035] In order to automatically dissipate heat from the condensate, a controller and a temperature sensor for detecting the water temperature in the water collection chamber are also included. The controller is electrically connected to the temperature sensor and the condenser fan 11. When the temperature sensor detects that the water temperature in the water collection chamber exceeds a preset value, the controller controls the condenser fan 11 to turn on for air cooling.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high efficiency plate fin evaporative condenser characterized by, The device includes a condenser body, a plate-fin heat exchanger fixedly installed inside the condenser body, a refrigerant inlet and a refrigerant outlet connected to the plate-fin heat exchanger, and a spray pipe fixedly installed above the plate-fin heat exchanger. The spray pipe is connected to a water collection chamber at the bottom of the condenser body via a water pipe. A circulating water pump is installed on the water pipe, and a filter device is installed at the connection between the water pipe and the water collection chamber.

2. A high efficiency plate fin evaporative condenser as claimed in claim 1 wherein: The bottom of the spray pipe is provided with several nozzles, which are evenly distributed along the length of the spray pipe.

3. A high efficiency plate fin evaporative condenser as claimed in claim 1 wherein: The filter device is detachably connected to the condenser body, and the condenser body is provided with an inspection door.

4. A high efficiency plate fin evaporative condenser as set forth in claim 1, wherein: It also includes a condenser fan, which is positioned above the spray pipe.

5. The high-efficiency plate-fin evaporative condenser as described in claim 4, characterized in that: It also includes a controller and a temperature sensor for detecting the water temperature in the water collection chamber, wherein the controller is electrically connected to the temperature sensor and the condenser fan respectively.

6. A high efficiency plate fin evaporative condenser as set forth in claim 1, wherein: It also includes a water distribution plate that is fixedly installed between the spray pipe and the plate-fin heat exchanger.

7. A high efficiency plate fin evaporative condenser as claimed in claim 6 wherein: The water distribution plate includes a water distribution plate body densely covered with water drop holes and flanged baffles fixedly installed on the four sides of the water distribution plate body. The projection of the plate-fin heat exchanger on the horizontal plane falls into the projection of the water distribution plate body on the horizontal plane.

8. A high efficiency plate fin evaporative condenser as set forth in claim 1, wherein: The filtration device is a precision filter.

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