Electric control box and heat pump equipment

Abstract

The utility model discloses an electric control box and heat pump equipment, the electric control box comprises a box body, a driving plate, a heat dissipation piece and an air duct shell, an air inlet and an air outlet are formed in the box body, the driving plate is installed in the box body, the heat dissipation piece is arranged on the driving plate, the air duct shell is installed in the box body, and the air duct shell is arranged in the box body. A heat dissipation air channel is formed between the air channel shell and the inner wall of the box body, one end of the heat dissipation air channel is correspondingly arranged below the heat dissipation piece, and the other end of the heat dissipation air channel is connected with the air outlet. By arranging the air duct shell, the independent heat dissipation air duct is formed in the air duct shell, hot air does not diffuse into the box body after flowing to the heat dissipation air duct during heat dissipation, but is directly discharged from the air outlet, and the backflow problem of hot air flow can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric control boxes, and particularly relates to an electric control box and a heat pump device. BACKGROUND

[0002] With the vigorous development of air source heat pump technology, the frequency conversion board plays a crucial role in various heat pump devices due to its high energy regulation capacity. However, the frequency conversion board generates significant heat energy during continuous operation, which directly threatens the stable operation and long service life of the device if there is a lack of effective heat dissipation mechanism. The traditional heat dissipation design, especially the open air duct structure, can realize the external discharge of heat to a certain extent, but its inherent limitations are increasingly prominent.

[0003] In addition, the traditional open air duct design often needs to add a mesh screen at the bottom to prevent insects and other foreign matters from entering the electric appliance box, thereby causing potential short circuit or damage risk. However, the mesh limit of the mesh screen greatly reduces the ventilation efficiency of the air duct, and a large amount of hot air forms vortex in the electric appliance box, which is difficult to smoothly discharge, thereby causing the continuous rise of the temperature in the electric appliance box. This cyclic temperature rise not only intensifies the thermal stress of electronic components and shortens their service life, but also may cause the temperature of the electric appliance box to exceed the safety threshold, thereby seriously threatening the overall performance of the device. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide an electric control box and a heat pump device, which form an independent heat dissipation air duct by setting an air duct shell. When dissipating heat, the hot air flows to the heat dissipation air duct and cannot spread to the inside of the box body, but is directly discharged from the air outlet, which can greatly reduce the backflow problem of the hot air flow.

[0005] To achieve the above purpose, the following technical solutions are adopted in the present application:

[0006] On the one hand, an electric control box is provided, which comprises a box body, a drive board, a heat dissipation member and an air duct shell. The box body is internally provided with an air inlet and an air outlet. The drive board is installed in the box body. The heat dissipation member is arranged on the drive board. The air duct shell is installed in the inside of the box body. A heat dissipation air duct is formed between the air duct shell and the inner wall of the box body. One end of the heat dissipation air duct is arranged below the heat dissipation member, and the other end is connected with the air outlet.

[0007] Further, the cross section of the air duct shell is in the shape of a trapezoid.

[0008] Further, the air duct shell has a first port and a second port. The air outlet area of the second port is greater than the air inlet area of the first port. The first port is arranged opposite to the heat dissipation member. The second port is connected with the air outlet in correspondence.

[0009] Further, the air duct shell comprises two symmetrically arranged inclined side plates, and an included angle a is formed between the inclined side plates and the inner wall of the box, wherein 45° < a < 90°.

[0010] Further, the heat dissipation air duct is provided with an insect prevention net.

[0011] Further, a grating is arranged below the heat dissipation member, the vertical distance between the grating and the heat dissipation member is X, and the vertical distance between the insect prevention net and the grating is Y, wherein Y ≥ X.

[0012] Further, the air inlet is provided with two, one is arranged at the top of the box, and the other is arranged at the side of the box.

[0013] Further, the heat dissipation member is a finned radiator.

[0014] Further, a heat dissipation fan is arranged on the driving plate, and the heat dissipation fan is electrically connected with the driving plate.

[0015] In another aspect, a heat pump device is also provided, comprising the electric control box as described above.

[0016] The electric control box integrates the box, the driving plate, the heat dissipation member and the air duct shell and other key components. The driving plate is the core of the electric control system, and the heat dissipation member is arranged thereon to efficiently absorb and conduct the heat generated during the operation of the driving plate. The air duct shell is installed inside the box, and an independent heat dissipation air duct is formed between the air duct shell and the inner wall of the box. One end of the heat dissipation air duct corresponds to the lower part of the heat dissipation member, which ensures that the heat on the heat dissipation member can quickly enter the heat dissipation air duct with the airflow, preventing the heat from spreading to the inside of the box and causing the internal temperature to rise. The heat in the heat dissipation air duct will eventually be directly discharged outside the electric control box through the other end of the air duct, which is connected to the only air outlet. This design not only realizes efficient heat transfer, but also avoids the backflow and accumulation of hot air inside the electric control box, thereby significantly reducing the internal temperature.

[0017] In addition, since the electric control box is provided with only one air outlet, when the hot air is discharged, a negative pressure environment is easily formed inside and outside the box. This negative pressure environment is conducive to naturally inhaling fresh air from the outside of the box, providing a continuous supply of cold air for the heat dissipation air duct, further enhancing the heat dissipation effect. At the same time, the inflow of fresh air also helps to dilute and discharge the harmful gases or heat accumulation that may be generated inside the electric control box, providing a more stable working environment for electronic components. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described in detail below according to the drawings and examples.

[0019] Figure 1A perspective view of the electric control box according to an embodiment of the present application;

[0020] Figure 2 A top view of the electric control box according to an embodiment of the present application;

[0021] Figure 3 A perspective view of the electric control box according to an embodiment of the present application Figure 2 A sectional view at A-A of the electric control box according to an embodiment of the present application;

[0022] Figure 4 A front view of the electric control box according to an embodiment of the present application;

[0023] Figure 5 A perspective view of the box according to an embodiment of the present application;

[0024] Figure 6 A perspective view of the air duct shell according to an embodiment of the present application.

[0025] In the figure: 1, box; 101, air inlet; 102, air outlet; 2, drive plate; 3, heat dissipation piece; 4, air duct shell; 401, heat dissipation air duct; 402, inclined side plate; 5, insect screen; 6, grating piece. DETAILED DESCRIPTION

[0026] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application are described in further detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] like Figures 1-6 As shown, this embodiment provides an electrical control box, including: a box body 1, a drive board 2, a heat sink 3, and a duct shell 4. The box body 1 is provided with an air inlet 101 and an air outlet 102. The drive board 2 is installed inside the box body 1. The heat sink 3 is disposed on the drive board 2. The duct shell 4 is installed inside the box body 1. A heat dissipation duct 401 is formed inside the duct shell 4. One end of the heat dissipation duct 401 is disposed below the heat sink 3, and the other end is connected to the air outlet 102.

[0030] Based on the above scheme, the electrical control box integrates core components such as the box body 1, drive board 2, heat dissipation components, and air duct shell 4, aiming to construct an efficient and stable heat dissipation system. The drive board 2, as the central hub of the electrical control system, is equipped with a heat sink 3. The heat sink 3 is specifically designed to efficiently absorb and conduct the heat released by the drive board 2 during operation, ensuring stable performance. The air duct shell 4, a key innovation of the scheme, is precisely installed inside the box body 1, forming an independent heat dissipation air duct 401 between itself and the inner wall of the box body 1. One end of this heat dissipation air duct 401 precisely corresponds to the lower part of the heat sink 3, ensuring that heat can quickly enter the air duct along a specific path, effectively preventing heat diffusion to other areas of the box body 1, thereby avoiding abnormal increases in internal temperature. At the other end of the heat dissipation air duct 401, it is closely connected to the only exhaust vent 102 configured on the box body 1, and the heat is ultimately discharged to the outside of the box body 1 through this channel, achieving efficient heat transfer and discharge.

[0031] The design strategy of having only one exhaust vent 102 in the electrical control box not only simplifies the overall structure but also cleverly utilizes physical principles to create a negative pressure environment. As hot air is continuously exhausted, the pressure difference between the inside and outside of the box 1 causes external air to flow in naturally, providing a continuous supply of fresh air to the heat dissipation duct 401. This negative pressure effect not only significantly enhances heat dissipation, allowing heat to be carried away more quickly from the heat dissipation duct 401, but also helps to remove any harmful gases or heat that may accumulate inside the electrical control box, creating a more stable and cleaner working environment for the electronic components.

[0032] In conclusion, this electrical control box, through its precise construction and unique design concept, not only achieves efficient heat management but also fully utilizes the advantages of the negative pressure environment, providing solid technical support for the stable operation and long-term reliability of electronic components. This innovative design undoubtedly points the way for the future development of heat pump equipment and other electrical control boxes with high heat dissipation requirements.

[0033] It should be noted that the exhaust vent 102 mentioned above refers to the heat dissipation structure of one drive board 2. When there are two drive boards 2 in the housing 1, each drive board 2 is provided with one exhaust vent 102.

[0034] Furthermore, the cross-section of the duct shell 4 is trapezoidal. The trapezoidal cross-section design aims to increase the area of ​​the exhaust port 102. Compared to traditional rectangular or circular designs, the trapezoidal structure can achieve a wider opening within a limited space, thereby effectively improving exhaust efficiency. This means that in the same amount of time, more hot air can be exhausted from the electrical control box through the exhaust port 102, accelerating the heat transfer process. The trapezoidal cross-section design also has the significant advantage of preventing hot air bounce. During heat dissipation, hot air often carries a certain amount of kinetic energy and momentum as it flows within the duct. Traditional duct designs may cause hot air to bounce back as it approaches the exhaust port 102 due to improper shape; that is, some hot air is bounced back into the duct just before exhaust, which not only reduces exhaust efficiency but may also exacerbate heat accumulation inside the electrical control box. The trapezoidal cross-section, with its gradually expanding shape, provides a smooth transition area for the hot airflow, effectively reducing bounce and ensuring that hot air can be smoothly and efficiently exhausted through the exhaust port 102.

[0035] Specifically, the air duct shell 4 has a first port and a second port, the air outlet area of the second port is larger than the air inlet area of the first port, the first port is arranged relative to the heat dissipation member 3, and the second port is connected with the air outlet 102. The first port is designed to be arranged relative to the heat dissipation member 3, and its main function is to serve as an inlet for hot air. During the operation of the electric control box, the heat dissipation member 3 will continuously absorb and conduct the heat generated by the drive board 2, and these heat will be converted into hot air. The position and size of the first port are accurately calculated to ensure that the hot air can smoothly and efficiently enter the inside of the air duct shell 4 without causing excessive energy loss or heat accumulation. The second port, as the outlet of the air duct shell 4, is connected with the air outlet 102 on the electric control box. Compared with the first port, the air outlet area of the second port is designed to be larger, which aims to improve the air exhaust efficiency. Since the hot air gradually accumulates energy and momentum when flowing inside the air duct shell 4, a larger air outlet area can more effectively convert these energies into air exhaust power, accelerating the process of discharging hot air. At the same time, the larger air outlet area of the second port also helps to reduce the rebound phenomenon of hot air flow, ensuring that the hot air can smoothly and stably pass through the air outlet 102 and be discharged outside the electric control box.

[0036] It is worth noting that the air duct shell 4 includes two symmetrically arranged inclined side plates 402, which form an included angle α with the inner wall surface of the box body 1, where 45° < α < 90°. When the included angle α is equal to 90°, that is, the inclined side plate 402 is perpendicular to the inner wall surface of the box body 1, this design will cause a significant problem: the rebounding hot air flow may directly collide with the downward hot air flow. This collision not only hinders the smooth discharge of hot air, but also increases energy loss, resulting in a significant decrease in air exhaust efficiency. Therefore, when designing the air duct shell 4, the case where the included angle α is equal to 90° must be avoided.

[0037] On the other hand, when the included angle α is less than 45°, although the air outlet area can be further increased, this design also has disadvantages. An excessively large air outlet area may cause difficulties in installing the electric control box, especially in space-limited application scenarios. In addition, a small included angle may also lead to a decrease in the structural strength of the air duct shell 4, increasing the risk of damage.

[0038] Therefore, after considering factors such as heat dissipation performance, installation convenience, and structural strength, the included angle α is designed to be between 45° and 90°. This design range can not only avoid the direct collision of rebounding hot air flow with downward hot air flow, improving air exhaust efficiency, but also ensure that the air outlet area is moderate, facilitating the installation and maintenance of the electric control box. At the same time, a reasonable included angle design can also enhance the structural stability of the air duct shell 4, prolonging its service life.

[0039] In some embodiments, to further enhance the reliability and safety of the electric control box, a mosquito net 5 is specially arranged in the heat dissipation air duct 401. This design detail aims to prevent insects, dust and other impurities in the external environment from entering the heat dissipation air duct 401, thereby avoiding blockage of the inside of the air duct, affecting the heat dissipation effect, and even causing potential damage to the electronic components inside the electric control box.

[0040] To further optimize the heat dissipation performance of the electric control box, a heat dissipation fan is specially arranged on the drive board 2. This design detail aims to quickly and effectively remove the heat generated by the drive board 2 and its electronic components through active heat dissipation, ensuring the stability of the internal temperature of the electric control box. The heat dissipation fan is electrically connected to the drive board 2, which means that the operating state of the heat dissipation fan can be directly managed by the control logic inside the drive board 2. Specifically, when the temperature sensor inside the drive board 2 detects that the temperature of the electronic components exceeds the preset safety threshold, the drive board 2 will immediately start the heat dissipation fan. After the heat dissipation fan starts working, it uses the air volume and air pressure generated to accelerate the air flow in the heat dissipation air duct 401, thereby quickly removing the heat generated by the electronic components and discharging it outside the electric control box through the second port of the air duct shell 4 and the exhaust port 102.

[0041] When choosing a heat dissipation fan, special attention is paid to the efficiency and noise level of the heat dissipation fan. A high-efficiency and low-noise heat dissipation fan not only provides sufficient air volume and air pressure to ensure heat dissipation, but also maintains a low noise level during operation, reducing interference with the surrounding environment. This design not only improves the heat dissipation performance of the electric control box, but also enhances its comfort and environmental friendliness.

[0042] In addition, the design of the heat dissipation fan associated with the internal logic of the drive board 2 also brings intelligent heat dissipation management. By monitoring the temperature of the electronic components in real time and automatically turning on or off the heat dissipation fan as needed, this intelligent heat dissipation management method can more effectively control the temperature inside the electric control box, prolong the service life of the electronic components, and improve the overall performance and reliability of the electric control box.

[0043] At the same time, a grid 6 is arranged below the heat dissipation member 3, the vertical distance between the grid 6 and the heat dissipation member 3 is X, and the vertical distance between the mosquito net 5 and the grid 6 is Y, where Y ≥ X. When Y is equal to 0, that is, the mosquito net 5 is directly arranged at the position of the grid 6, this design will cause serious problems. Due to the mesh number limit of the mosquito net 5, most of the hot air flow will be blocked when passing through, causing the hot air flow to flow back into the heat dissipation member 3. This backflow phenomenon not only reduces the heat dissipation efficiency, but also increases the burden of the heat dissipation member 3, thereby affecting the performance and reliability of the entire device.

[0044] When Y is equal to X, that is, the insect screen 5 is set up at the middle section of the heat dissipation air duct 401, although this design reserves a certain buffer space and provides a certain buffer for the backflow of hot air, the insect screen 5 is still relatively close to the heat dissipation fan. Due to the large air pressure generated by the heat dissipation fan, the hot air flow may still be hindered when passing through the insect screen 5, resulting in an increase in air pressure, which is not conducive to the smooth discharge of hot air flow.

[0045] However, when Y is greater than X, that is, the insect screen 5 is set at the bottom of the box body 1, this design can significantly optimize the heat dissipation effect. At this time, a sufficient length Y of the heat dissipation air duct 401 is reserved between the insect screen 5 and the heat dissipation member 3, which greatly reduces the air pressure of the downward blowing hot air flow, and also reduces the air pressure of the rebounding hot air flow. In addition, sufficient space also provides a sufficient buffer area for the rebounding hot air flow, avoiding its reflow into the heat dissipation member 3. This design not only improves the heat dissipation efficiency, but also enhances the reliability and stability of the electric control box.

[0046] Preferably, in order to further improve the heat dissipation performance of the electric control box, the design of the air inlet 101 is further optimized, which is specifically manifested as that two air inlets 101 are arranged at different positions of the box body 1, one of which is arranged at the top of the box body 1, and the other is arranged at the side of the box body 1. The design of the double air inlets 101 also provides higher flexibility and adaptability for the electric control box. In different working environments or heat dissipation requirements, the opening degree or position of the two air inlets 101 can be adjusted to optimize the heat dissipation effect and meet the specific heat dissipation requirements.

[0047] Further, the heat dissipation member 3 is a finned heat sink. The finned heat sink is a kind of high-efficiency heat dissipation element, which is characterized by extending a plurality of thin plates or fins on the heat dissipation base, which greatly increases the heat dissipation area, thereby improving the heat dissipation efficiency. In the electric control box, the finned heat sink is usually installed near the drive board 2 or other electronic components that need to be cooled. By optimizing the design and layout of the finned heat sink, it can ensure that the heat can be quickly and uniformly transferred to the fins, and high-efficiency heat dissipation can be achieved through the air flow in the heat dissipation air duct 401.

[0048] It is worth mentioning that in the design of the electric control box or similar equipment, in order to optimize the heat dissipation performance, reduce the weight, improve the strength and corrosion resistance, the material selection of the air duct shell 4 and the heat dissipation member 3 is crucial. Among them, the air duct shell 4 and the heat dissipation member 3 are made of PVC, aluminum alloy, or plastic composite material.

[0049] On the other hand, a heat pump equipment comprising the electric control box as described above is also provided.

[0050] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like, are intended to facilitate the description and simplify the operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only used to distinguish in the description, and have no special meaning.

[0051] In the description of the present application, the description referring to the terms "an embodiment", "an example", and the like, means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0052] In addition, it should be understood that although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the present application is only for the sake of clarity, and those skilled in the art should consider the present application as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0053] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art do not need to make creative efforts to conceive other specific embodiments of the present application, and these embodiments will fall within the scope of protection of the present application.

Claims

1. An electrical control box, characterized in that, The utility model relates to an electric control box, which comprises a box (1), a driving plate (2), a heat dissipation piece (3) and an air duct shell (4), the box (1) is internally provided with an air inlet (101) and an air outlet (102), the driving plate (2) is installed in the box (1), the heat dissipation piece (3) is arranged on the driving plate (2), the air duct shell (4) is installed in the box (1), a heat dissipation air duct (401) is formed between the air duct shell (4) and the inner wall of the box (1), one end of the heat dissipation air duct (401) is arranged below the heat dissipation piece (3), and the other end is connected with the air outlet (102). The cross section of the air duct shell (4) is trapezoidal.

2. The electric control box according to claim 1, characterized in that, The air duct shell (4) has a first port and a second port, the air outlet area of the second port is greater than the air inlet area of the first port, the first port is arranged opposite to the heat dissipation piece (3), and the second port is connected with the air outlet (102) correspondingly.

3. The electric control box according to claim 2, wherein The air duct shell (4) comprises two symmetrically arranged inclined side plates (402), and an included angle alpha is formed between the inclined side plates (402) and the inner wall of the box (1), wherein 45 DEG < alpha < 90 DEG.

4. The electric control box according to claim 2, wherein The heat dissipation air duct (401) is provided with an insect screen (5).

5. The electric control box according to any one of claims 1 to 4, characterized in that, A grating piece (6) is arranged below the heat dissipation piece (3), the vertical distance between the grating piece (6) and the heat dissipation piece (3) is X, the vertical distance between the insect screen (5) and the grating piece (6) is Y, and Y >= X.

6. The electric control box according to claim 5, wherein The air inlet (101) is provided with two air inlets, one of which is arranged on the top of the box (1), and the other is arranged on the side of the box (1).

7. The electric control box according to any one of claims 1 to 4, characterized by The heat dissipation piece (3) is a fin heat sink.

8. The electric control box according to any one of claims 1 to 4, characterized by A heat dissipation fan is arranged on the driving plate (2) and electrically connected with the driving plate (2).

9. The electric control box according to any one of claims 1 to 4, characterized by The utility model relates to an electric control box.

10. A heat pump apparatus, characterized by, The electric control box according to any one of claims 1-9. ​

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