A heat exchanger with modular fan assembly

Abstract

This utility model discloses a heat exchanger with a modular fan assembly, comprising: a housing, installed inside a temperature control device, with a mounting through hole on its front side; a heat exchange core, fixed to the inner cavity of the housing, dividing the inner cavity into an independent external circulation air inlet cavity and an external circulation air outlet cavity; and a fan assembly, including a centrifugal fan and a mounting frame; the mounting frame is rigidly connected by an external mounting plate and an internal load-bearing structure; the mounting plate covers the outer edge of the mounting through hole and is detachably connected to the housing by fasteners; the load-bearing structure extends into the external circulation air outlet cavity, and the axial ends of the centrifugal fan are fixed to the load-bearing structure. This utility model, through the modular design of the fan assembly, allows for direct disassembly, cleaning, or replacement. Disassembly only requires loosening the fasteners between the mounting plate and the front side of the housing to pull the entire fan assembly out through the mounting through hole, making disassembly and assembly convenient and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for temperature control equipment, and specifically to a heat exchanger with a modular fan assembly. Background Technology

[0002] In traditional heat exchangers, the centrifugal fan is usually fixed inside the casing by welding or bolting. When the centrifugal fan accumulates dust or malfunctions, the entire heat exchanger needs to be disassembled for cleaning or returned to the factory for repair. This operation is time-consuming and can easily damage the sealing structure of the air duct. Especially in scenarios where the centrifugal fan requires high-frequency cleaning, the disassembly and assembly of the centrifugal fan will face technical pain points of low efficiency and high maintenance costs. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a heat exchanger with modular fan components.

[0004] The technical solution of this utility model is: for internal heat dissipation or temperature equalization in temperature control equipment, including:

[0005] The housing is installed inside the temperature control equipment, and its front side has a mounting through hole;

[0006] The heat exchange core is fixed to the inner cavity of the housing, and the inner cavity is divided into an independent external circulation air inlet cavity and an external circulation air outlet cavity;

[0007] A fan assembly includes a centrifugal fan and a mounting frame; the mounting frame is rigidly connected by an external mounting plate and an internal load-bearing structure; the mounting plate covers the outer edge of the mounting through hole and is detachably connected to the housing by fasteners; the load-bearing structure extends out of the external circulation outlet cavity, and the two axial ends of the centrifugal fan are fixed to the load-bearing structure.

[0008] A further technical solution is that a positioning pin is provided on the inner wall of the back of the housing, and the positioning pin is inserted into a positioning through hole provided on the back of the load-bearing structure.

[0009] A further technical solution is that the heat exchange core is provided with an external circulation microchannel and an internal circulation microchannel that are not interconnected. The external circulation microchannel is connected to the external circulation air inlet chamber and the external circulation air outlet chamber.

[0010] A further technical solution is that: internal circulation return air inlets and internal circulation air outlets are symmetrically opened on both sides of the casing, and the internal circulation microchannel connects the internal circulation return air inlets and the internal circulation air outlets.

[0011] The further technical solution is: the heat exchange core is formed by stacking multiple sets of chips to form an array structure, the outer circulation microchannel runs through the height direction of the casing, the inner circulation microchannel runs through the width direction of the casing, and forms a spatial orthogonal structure of the outer circulation microchannel and the inner circulation microchannel.

[0012] A further technical solution is as follows: the back of the casing is provided with an external circulation air inlet and an external circulation air outlet, the external circulation air outlet being connected to the external circulation air outlet cavity; the axis of the centrifugal fan is parallel to the height direction of the casing, its air inlet end faces the external circulation air inlet cavity, and its air outlet end faces the external circulation air outlet.

[0013] A further technical solution is that the external circulation air inlet is connected to the external circulation air inlet cavity, and a filter screen is provided at the inlet of the external circulation air inlet.

[0014] A further technical solution is that the outer side of the mounting plate is provided with a pull-out operation part to facilitate manual application of pull-out force.

[0015] The beneficial technical effects of this utility model are: through the modular design of the fan assembly, it can be directly disassembled for cleaning or replacement. During disassembly, it is only necessary to loosen the fasteners between the mounting plate and the front of the casing, and the entire fan assembly can be pulled out from the mounting through hole. This makes disassembly and assembly convenient and reduces maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the positions of the external circulation air inlet and external circulation air outlet of this utility model;

[0018] Figure 3 This is an exploded view of the overall structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the fan assembly of this utility model;

[0020] Figure 5 This is a schematic diagram showing the positions of the internal circulation return air inlet and the internal circulation supply air inlet of this utility model;

[0021] The components are: 1. Housing; 2. Heat exchange core; 3. External circulation air inlet chamber; 4. External circulation air outlet chamber; 5. External circulation air inlet; 6. External circulation air outlet; 7. Fan assembly; 71. Centrifugal fan; 72. Mounting plate; 73. Bearing structure; 74. Positioning through hole; 75. Positioning pin; 76. Pull-out operating part; 8. Mounting through hole; 9. Internal circulation return air outlet; 10. Internal circulation air supply outlet. Detailed Implementation

[0022] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] like Figure 1 and Figure 2 As shown, the present invention discloses a heat exchanger with a modular fan assembly for heat dissipation or temperature equalization inside a temperature control device. It includes a housing 1 installed inside the temperature control device and a heat exchange core 2 fixedly installed inside the housing 1. The heat exchange core 2 divides the inner cavity of the housing 1 into two independent external circulation air inlet chambers 3 and external circulation air outlet chambers 4. The back of the housing 1 is provided with an external circulation air inlet 5 and an external circulation air outlet 6 along the height direction.

[0024] The external circulation air inlet 5 is connected to the external circulation air inlet cavity 3, and a filter screen is installed at its inlet to effectively filter out larger particulate impurities such as dust, willow catkins, and insects from the outside air. The external circulation air outlet 6 is connected to the external circulation air outlet cavity 4.

[0025] like Figure 3 and Figure 4 The external circulation air outlet cavity 4 is provided with a detachable fan assembly 7. The fan assembly 7 includes a centrifugal fan 71 and a fixed frame. The fixed frame is rigidly connected by an external mounting plate 72 and an internal load-bearing structure 73.

[0026] Specifically, the front of the housing 1 has a mounting through hole 8 that matches the contour of the fan assembly 7. The mounting plate 72 covers the outer edge of the mounting through hole 8 and is detachably connected to the housing 1 by fasteners. The supporting structure 73 extends through the mounting through hole 8 into the external circulation air outlet cavity and fixes and supports the axial ends of the centrifugal fan 71. In this embodiment, the axis of the centrifugal fan 71 is parallel to the height direction of the housing 1, with its air inlet facing the external circulation air inlet cavity 3 and its air outlet facing the external circulation air outlet 6.

[0027] The back of the bearing structure 73 is provided with a positioning through hole 74. The positioning through hole 74 and the positioning pin 75 correspondingly provided on the inner wall of the back of the housing 1 form an insertion fit to achieve precise positioning of the fan assembly 7 along the height direction, prevent it from sagging or misaligning during installation, and help to withstand the vibration of the centrifugal fan 71 during operation.

[0028] The modular design of the fan assembly 7 allows for direct disassembly for cleaning or replacement when the centrifugal fan 71 malfunctions or accumulates dust. Disassembly simply requires releasing the fasteners between the mounting plate 72 and the front of the casing 1, allowing the entire fan assembly 7 to be pulled out through the mounting hole 8 without removing the casing 1. This avoids downtime or requiring return to the factory for repairs, reducing maintenance costs. Furthermore, the insertion and engagement of the positioning pin 75 with the positioning through hole 74 ensures accurate automatic height reset during reinstallation, improving maintenance efficiency.

[0029] Preferably, the outer side of the mounting plate is provided with a pull-out operation part 76, which facilitates manual application of pull-out force to disassemble the fan assembly 7.

[0030] The casing 1 has symmetrically arranged internal circulation return air inlets 9 and internal circulation supply air inlets 10 on both side walls, such as... Figure 5 .

[0031] The heat exchange core 2 is an array structure formed by stacking, bonding, or welding multiple chips through a specific process. This array structure is internally divided into two completely independent and intersecting sets of external and internal circulation microchannels. The external circulation microchannel penetrates the heat exchange core 2 along the height of the housing 1 and connects to the external circulation air inlet 3 and the external circulation air outlet 4. The internal circulation microchannel penetrates the heat exchange core 2 along the width of the housing 1 and connects to the internal circulation return air inlet 9 and the internal circulation air outlet 10, thus forming a spatially orthogonal structure of the external and internal circulation microchannels.

[0032] Driven by the centrifugal fan 71, the external circulating airflow enters the external circulating air inlet 3 through the external circulating air inlet 5, flows along the height direction of the casing 1 through the external circulating microchannel of the heat exchange core 2, then enters the external circulating air outlet 4 and enters the centrifugal fan 71 axially. Inside the centrifugal fan 71, it is rotated radially by centrifugal force and discharged from the casing 1 through the external circulating air outlet 6, forming an external circulating air duct that runs through the inside and outside of the casing 1. External air is introduced, undergoes heat exchange within the heat exchange core 2, and is then discharged.

[0033] The formation of the internal circulation air duct depends on the driving source (such as the system fan) inside the temperature control equipment. Under the drive of the driving source, the internal circulation airflow flows from the internal circulation return air port 9 along the width direction of the casing 1 through the internal circulation microchannel of the heat exchange core 2 and performs heat exchange. The temperature-regulated airflow is discharged from the internal circulation air supply port 10 into the temperature control equipment, completing the internal circulation of the air duct.

[0034] In this embodiment, the heat exchanger itself does not provide power for the internal circulation of the air duct. By placing it on the original internal circulation path of the temperature control device, when the internal circulation airflow passes through the heat exchanger, it completes the heat exchange and then returns to the interior of the temperature control device.

[0035] This heat exchange process transfers heat from inside the temperature control equipment to the external environment, or extracts heat from the external environment, to maintain the target temperature inside the temperature control equipment. Simultaneously, the heat exchanger maintains complete physical isolation between the internal and external environments of the temperature control equipment, effectively preventing the intrusion of external dust, moisture, corrosive gases, etc., ensuring the reliable operation of the temperature control equipment.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heat exchanger with a modular fan assembly for internal heat dissipation or temperature equalization in temperature control equipment, characterized in that: include: The housing (1) is installed inside the temperature control equipment, and a mounting through hole (8) is provided on its front side; The heat exchange core (2) is fixed in the inner cavity of the housing (1) and divides the inner cavity into an independent external circulation air inlet cavity (3) and an external circulation air outlet cavity (4); The fan assembly (7) includes a centrifugal fan (71) and a mounting frame; the mounting frame is rigidly connected by an external mounting plate (72) and an internal bearing structure (73); the mounting plate (72) covers the outer edge of the mounting through hole (8) and is detachably connected to the housing (1) by fasteners; the bearing structure (73) extends out of the external circulation air outlet cavity (4), and the two axial ends of the centrifugal fan (71) are fixed on the bearing structure (73).

2. A heat exchanger with a modular fan assembly according to claim 1, characterized in that: The inner wall of the back of the housing (1) is provided with a positioning pin (75), which is engaged with a positioning through hole (74) on the back of the bearing structure (73).

3. A heat exchanger with a modular fan assembly according to claim 1, characterized in that: The heat exchange core (2) is provided with an external circulation microchannel and an internal circulation microchannel that are not interconnected. The external circulation microchannel is connected to the external circulation air inlet chamber (3) and the external circulation air outlet chamber (4).

4. A heat exchanger with a modular fan assembly according to claim 3, characterized in that: The casing (1) has symmetrically opened internal circulation return air inlets (9) and internal circulation air outlets (10) on both sides of the casing (1), and the internal circulation microchannel connects the internal circulation return air inlets (9) and the internal circulation air outlets (10).

5. A heat exchanger with a modular fan assembly according to claim 3, characterized in that: The heat exchange core (2) is formed by stacking multiple chips to form an array structure. The outer circulation microchannel runs through the height direction of the housing (1), and the inner circulation microchannel runs through the width direction of the housing (1), forming a spatial orthogonal structure of the outer circulation microchannel and the inner circulation microchannel.

6. A heat exchanger with a modular fan assembly according to claim 1, characterized in that: The back of the housing (1) is provided with an external circulation air inlet (5) and an external circulation air outlet (6), and the external circulation air outlet (6) is connected to the external circulation air outlet cavity (4); the axis of the centrifugal fan (71) is parallel to the height direction of the housing (1), its air inlet end faces the external circulation air inlet cavity (3), and its air outlet end faces the external circulation air outlet (6).

7. A heat exchanger with a modular fan assembly according to claim 6, characterized in that: The external circulation air inlet (5) is connected to the external circulation air inlet cavity (3), and a filter screen is provided at the inlet of the external circulation air inlet (5).

8. A heat exchanger with a modular fan assembly according to claim 1, characterized in that: The outer side of the mounting plate (72) is provided with a pull-out operation part (76) to facilitate manual application of pull-out force.

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