Heat exchanger with condensate water diversion structure

Abstract

The utility model discloses a heat exchanger with a condensate water diversion structure, and aims to overcome the defect that the existing micro-channel heat exchanger can only realize the diversion of condensate water under the condition that a collecting pipe and a vertical heat exchange pipe are transversely arranged. The preset leeside of the heat exchange pipe is provided with a drainage strip, the drainage strip is provided with a drainage groove with an open top, the collecting pipe is provided with a water guide pipe, the drainage groove is communicated with the water guide pipe, the bottom of the water guide pipe is provided with an airflow pipe perpendicular to the axial direction of the water guide pipe, and the two ends of the airflow pipe are open. And the suction force for condensate water is generated by utilizing negative pressure to replace gravity, so that the vertical layout of the collecting pipe can be adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, and more specifically, to a heat exchanger with a condensed water guiding structure. Background Art

[0002] A heat exchanger generally includes at least two headers, between which a number of heat exchange tubes are inserted to form a heat exchange tube located between the two headers, and between which fins are arranged to improve the heat exchange effect. When a heat exchanger is used as a heat exchanger or a heat pump heat exchanger, condensed water will be generated on the surface.

[0003] The current related technology uses the method of vertically placing heat exchange tubes to guide the condensed water to flow out along gravity. This method cannot be applied to some layouts that require vertical headers.

[0004] Therefore, the present application aims to provide a heat exchanger with a condensate guiding structure, which can provide guidance and discharge of condensate in a vertical header layout. Summary of the invention

[0005] The utility model overcomes the deficiency of the existing microchannel heat exchanger that the condensed water can only be guided when the header is horizontally arranged and the heat exchange tube is vertically arranged, and provides a heat exchanger with a condensed water guiding structure, which can guide the condensed water under the premise of vertical header.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A heat exchanger with a condensate diversion structure comprises a collecting pipe, a heat exchange tube and a heat dissipation fin. A drainage strip is provided on the preset leeward side of the heat exchange tube. A drainage groove with an open top is provided on the drainage strip. A water guide pipe is provided on the collecting pipe. The drainage groove is connected to the water guide pipe. An airflow pipe perpendicular to the axial direction of the water guide pipe is provided at the bottom of the water guide pipe. Both ends of the airflow pipe are open.

[0008] The header provides heat exchange medium to the heat exchange tubes, and the heat fins assist the heat exchange tubes in heat exchange. In this process, condensed water will be produced on the surface of the heat fins and the surface of the heat exchange tubes due to the temperature difference.

[0009] Condensed water will move to the back of the heat exchanger with the airflow, and the condensed water will separate from the heat exchanger and fall behind the heat exchanger, causing corrosion. Condensed water remaining on the heat exchanger will also affect the heat dissipation of the heat exchanger, and even freeze and damage the heat exchanger under low temperature conditions.

[0010] The drain strips on the leeward side of the heat exchanger collect the condensed water on the heat exchanger. Then it is discharged after being merged through the water guide pipe. The high flow velocity of the air flow pipe at the end of the guide pipe generates negative pressure, sucking the water flow on the drain strips. This supports the vertical layout of the header.

[0011] Preferably, the drain strip is provided with a drain groove that is larger at the top and smaller at the bottom, and connecting pipes are provided at both ends of the drain strip near the bottom, and the drain strip is connected to the water pipe through the connecting pipe. The structure is used to collect condensed water and enable the drain pipe connected to the water pipe to be located below the horizontal plane of the condensed water as much as possible, thereby improving the efficiency of extracting condensed water.

[0012] Preferably, an airflow fan is provided at one end of the airflow tube, and airflow is actively generated by the airflow fan.

[0013] Preferably, the cross section of the connecting pipe is a closed ring. The structure reduces air intake and improves the efficiency of condensed water extraction and the suction force on condensed water.

[0014] Preferably, the airflow fan is electrically connected to a controller and is turned on and off by the controller. The controller realizes active and intermittent control of the airflow fan, and does not start the airflow fan in an environment where condensed water is not generated, but starts it when necessary.

[0015] Preferably, the top of the water conduit is closed to reduce the inhalation of gas and improve the suction of condensed water.

[0016] Preferably, the height of the drain strip is adapted to the height of the heat exchange tube. The structure avoids affecting the wind resistance and weakening the heat exchange capacity of the heat exchanger.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) Using negative pressure to generate suction for condensed water instead of gravity, so as to adapt to the layout of vertical manifolds;

[0019] (2) The airflow through the airflow pipe generates negative pressure on the connecting pipe, and the structure of the device is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the utility model;

[0021] Figure 2 yes Figure 1 Sectional view at AA in the middle;

[0022] Figure 3 It is a front view of the drainage strip of the utility model;

[0023] Figure 4 It is a schematic diagram of the end of the drainage strip of the utility model;

[0024] Figure 5 It is a schematic diagram of the connection between the water guide pipe and the connecting pipe of the utility model;

[0025] In the figure:

[0026] Collecting pipe 1, heat exchange tube 2, heat dissipation fin 3, drainage strip 4, drainage groove 5, water guide pipe 6, air flow pipe 7, connecting pipe 8, air flow fan 9. DETAILED DESCRIPTION

[0027] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present disclosure, and do not specifically refer to any part or element in the present disclosure and should not be understood as limitations on the present disclosure.

[0031] In the present disclosure, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and they cannot be understood as limitations on the present disclosure.

[0032] Example:

[0033] A heat exchanger with a condensate diversion structure comprises a collecting pipe 1, a heat exchange tube 2 and a heat dissipation fin 3, a drainage strip 4 is provided on the preset leeward side of the heat exchange tube 2, a drainage groove 5 with an open top is provided on the drainage strip 4, a water guide pipe 6 is provided on the collecting pipe 1, the drainage groove 5 is connected to the water guide pipe 6, an airflow pipe 7 perpendicular to the axial direction of the water guide pipe 6 is provided at the bottom of the water guide pipe 6, and both ends of the airflow pipe 7 are open.

[0034] The header 1 provides heat exchange medium to the heat exchange tube 2, and the heat dissipation fins 3 assist the heat exchange tube 2 in heat exchange. In this process, the surface of the heat dissipation fins 3 and the surface of the heat exchange tube 2 will produce condensed water due to the temperature difference.

[0035] Condensed water will move to the back of the heat exchanger with the airflow, and the condensed water will separate from the heat exchanger and fall behind the heat exchanger, causing corrosion. Condensed water remaining on the heat exchanger will also affect the heat dissipation of the heat exchanger, and even freeze and damage the heat exchanger under low temperature conditions.

[0036] The drain strip 4 on the leeward side of the heat exchange tube 2 collects the condensed water on the heat exchanger. Then it is discharged after being merged through the water guide pipe 6. The high flow velocity of the air flow pipe 7 at the end of the guide pipe generates negative pressure, sucking the water flow on the drain strip 4. This supports the vertical layout of the manifold 1.

[0037] The drain strip 4 is provided with a drain groove 5 that is larger at the top and smaller at the bottom. Connecting pipes 8 are provided at both ends of the drain strip 4 near the bottom. The drain strip 4 is connected to the water pipe 6 through the connecting pipe 8. The structure is used to collect condensed water and enable the drain pipe connected to the water pipe 6 to be located below the horizontal plane of the condensed water as much as possible, thereby improving the efficiency of extracting condensed water. The height of the drain strip 4 is adapted to the height of the heat exchange tube 2. The structure avoids affecting the wind resistance and weakening the heat exchange capacity of the heat exchanger.

[0038] The cross section of the connecting pipe 8 is a closed ring. The structure reduces the intake of air, improves the efficiency of extracting condensed water and the suction force on condensed water. The airflow fan 9 is electrically connected to a controller and is turned on and off by the controller. The controller realizes active and intermittent control of the airflow fan 9, and does not start the airflow fan 9 in an environment where condensed water is not generated, but starts it when necessary.

[0039] The top of the water pipe 6 is closed to reduce the inhalation of gas and improve the suction force on condensed water.

[0040] An airflow fan 9 is provided at one end of the airflow pipe 7. The airflow fan 9 is used to actively generate airflow.

[0041] In some embodiments, the heat exchanger of this embodiment is installed on a car or similar vehicle, and the airflow pipe 7 is directly connected to the wind impact surface to form airflow by using the impact wind. In this embodiment, the end of the airflow pipe 7 can also be directly connected to the outside of the vehicle to throw out the generated condensed water.

[0042] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A heat exchanger with a condensate water diversion structure, comprising a header, a heat exchange tube and a heat dissipation fin, characterized in that: A drainage strip is provided on the preset leeward side of the heat exchange tube, a drainage groove with an open top is provided on the drainage strip, a water pipe is provided on the collecting pipe, the drainage groove is connected to the water pipe, an air flow pipe perpendicular to the axial direction of the water pipe is provided at the bottom of the water pipe, and both ends of the air flow pipe are open.

2. The heat exchanger with a condensate guiding structure according to claim 1, characterized in that: The drainage strip is provided with a drainage groove which is larger at the top and smaller at the bottom. Both ends of the drainage strip are provided with connecting pipes near the bottom. The drainage strip is connected to the water pipe through the connecting pipes.

3. The heat exchanger with a condensate guiding structure according to claim 2, characterized in that: The cross section of the connecting pipe is a closed ring.

4. The heat exchanger with a condensate guiding structure according to claim 1, characterized in that: An air flow fan is arranged at one end of the air flow tube.

5. The heat exchanger with a condensate guiding structure according to claim 4, characterized in that: The airflow fan is electrically connected to a controller and is turned on and off by the controller.

6. The heat exchanger with a condensate water guiding structure according to claim 1, characterized in that: The top of the aqueduct is closed.

7. A heat exchanger with a condensate guiding structure according to any one of claims 1 to 6, characterized in that: The height of the drain strip is adapted to the height of the heat exchange tube.

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