Air conditioner heat exchanger

Abstract

The utility model discloses a kind of air conditioner heat exchangers, especially a kind of evaporator fin electric heating wire arrangement structure with high efficient anti-frosting function.Heat exchanger adopts modular design of split type, through nickel-chromium alloy electric heating wire is arranged in copper pipe surface and fin air inlet side key area, combined with intelligent temperature control strategy, realize accurate local heating by dynamic adjustment unit area power, wherein heating wire is embedded in pre-processed channel and adopts insulation coating treatment, while based on temperature and humidity sensor data, intermittent pulse heating is implemented to frost high-risk area.The embodiment compared with traditional global heating mode realizes significant energy-saving effect, defrosting time is greatly shortened.Modular structure is used to facilitate local replacement and cleaning, maintenance cost is reduced.Insulation and anticorrosion treatment ensure the long-term stability of heating element in humid environment, especially suitable for household and commercial air conditioning system, especially suitable for high humidity area heat pump and cold chain equipment.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, specifically an air conditioning heat exchanger with anti-frost function, which is particularly suitable for heat pump systems and cold chain equipment in high humidity environments. Background Technology

[0002] Traditional air conditioning heat exchangers are prone to frost buildup on the evaporator fins when operating in high humidity environments, severely impacting heat exchange efficiency. Existing technologies typically employ the following solutions: 1) electric defrosting, but this suffers from high energy consumption and uneven heating; 2) optimized fin structure, but with limited anti-frost effectiveness; 3) chemical coating treatment, but lacking durability. None of these solutions can simultaneously meet the requirements of efficient defrosting and energy saving. Furthermore, traditional heat exchangers are mostly monolithic structures, making maintenance difficult, and requiring complete replacement of the entire unit when partially damaged, resulting in high costs. Therefore, there is an urgent need to develop a new type of heat exchanger that can effectively prevent frost buildup, reduce energy consumption, and facilitate maintenance. Utility Model Content

[0003] The purpose of this invention is to provide an air conditioning heat exchanger that solves the problems of low defrosting efficiency, high energy consumption, and difficult maintenance in the existing technology through an innovative electric heating wire arrangement and modular design.

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

[0005] An air conditioning heat exchanger includes a modular heat exchanger body composed of multiple independently detachable heat exchange modules. Each heat exchange module has electric heating wires arranged on the outer surface of the copper tubes and in key areas on the air inlet side of the fins. The heating wires are spirally wound on the copper tube surface and arranged in a serpentine pattern on the air inlet side of the fins. An intelligent temperature control system uses temperature and humidity sensor data to implement intermittent pulse heating in areas with a high risk of frost formation.

[0006] Furthermore, the heating wire is made of nickel-chromium alloy with a diameter of 0.2~0.5mm, embedded in pre-machined grooves in the copper tube and fins, and treated with an insulating coating. The intelligent temperature control system dynamically adjusts the heating power, keeping the power per unit area within the range of 0.5~1.2W / cm². The heat exchange modules are connected via standardized interfaces, supporting independent disassembly and maintenance.

[0007] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0008] 1. The arrangement of heating wires enables precise heating, saving more than 40% energy compared to traditional full-area heating methods;

[0009] 2. The controller adopts an intermittent pulse heating mode, which reduces defrosting time by 25%;

[0010] 3. Modular design reduces maintenance costs by 50%;

[0011] 4. Insulation and corrosion protection treatments ensure the long-term stability of the heating element in humid environments;

[0012] 5. This embodiment is particularly suitable for heat pumps and cold chain equipment in high humidity areas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the heat exchanger in one embodiment of the present invention.

[0014] Figure 2 This is a cross-sectional view of the fin layer in one embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the electric heating control system in one embodiment of the present invention.

[0016] Figure 4 This is a diagram showing the arrangement of the electric heating wires in one embodiment of the present invention.

[0017] In the above figures, 1 is the heat exchange module, 2 is the standardized interface, 3 is the fin, 4 is the channel, 5 is the electric heating wire, 6 is the temperature control system, 7 is the temperature and humidity sensor, and 8 is the insulating coating. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," etc., used in this application are used to distinguish the described objects and do not have any sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0019] Unless otherwise specified, the unit modules (components, structures, mechanisms) or sensors involved in the following embodiments are all conventional commercially available products.

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0021] As shown in Figures 1-4, the air conditioning heat exchanger of this utility model adopts a split modular design, consisting of multiple independent

[0022] The heat exchange modules (1) are connected via standardized interfaces (2). Each heat exchange module has pre-processed grooves (4) at the root of its fins (3), and nickel-chromium alloy electric heating wires (5) are embedded in them in a serpentine manner and treated with a polyimide insulating coating (8). The first three rows of fins on the air inlet side are the key areas for arrangement. The nickel-chromium alloy electric heating wires (5) on the surface of the copper tube are fixed by a spiral winding method.

[0023] The intelligent temperature control system (6) monitors the status of each area in real time through temperature and humidity sensors (7). When the temperature of a certain area is ≤3℃ and the humidity is ≥75%, the system implements intermittent pulse heating of the electric heating wire in that area, adopting a working cycle of 30 seconds of heating and 60 seconds of stopping, and the power per unit area is controlled at about 0.8W / cm2.

[0024] Each heat exchange module has a built-in temperature fuse with an operating temperature of 120℃.

[0025] Maintenance only requires disassembling the individual modules that need to be replaced or cleaned, without disassembling the entire module.

[0026] This invention is not only applicable to conventional air conditioning systems, but also particularly suitable for heat pumps and cold chain equipment operating in high humidity environments. It can effectively solve the frosting problem and significantly improve the energy efficiency ratio.

[0027] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0028] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of the invention. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An air conditioning heat exchanger, characterized in that, include: The heat exchanger body is designed with a split modular design and consists of multiple independently detachable heat exchange modules; electric heating wires are arranged on the surface of the copper tube and in key areas of the fin air inlet side. The electric heating wires are arranged in a spiral winding on the surface of the copper tube and in a serpentine winding arrangement on the air inlet side of the fin. The intelligent temperature control system is used to implement intermittent pulse heating in areas at high risk of frost based on data from temperature and humidity sensors.

2. The air conditioning heat exchanger according to claim 1, characterized in that, The electric heating wire is a nickel-chromium alloy heating wire with a diameter of 0.2~0.5mm, which is embedded in the outer surface of the copper tube and the grooves pre-processed in the fins and treated with an insulating coating.

3. The air conditioning heat exchanger according to claim 1, characterized in that, The intelligent temperature control system is configured to dynamically adjust the heating power so that the power per unit area is controlled within the range of 0.5~1.2W / cm2.

4. The air conditioning heat exchanger according to claim 1, characterized in that, The heat exchange modules are connected via standardized interfaces, allowing for independent disassembly and maintenance.

5. The air conditioning heat exchanger according to claim 1, characterized in that, The electric heating wires are arranged in the first three rows of fins on the air inlet side.

6. The air conditioning heat exchanger according to claim 1, characterized in that, The intermittent pulse heating uses a duty cycle adjustment method, with a working cycle of 30 seconds of heating and 60 seconds of stopping.

7. The air conditioning heat exchanger according to claim 1, characterized in that, Each heat exchange module has a built-in temperature fuse with an operating temperature of 120℃.

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