Heat dissipation air duct structure and air conditioner

Abstract

The utility model discloses a heat dissipation air duct structure and an air conditioner. The heat dissipation air duct structure comprises an outer shell; the protection plate is provided with an electric appliance box in a matched mode, and a fluid channel is formed between the windward side of the protection plate and the corresponding outer shell; the protection plate is provided with a water storage space corresponding to a heating area of the electric appliance box in a matched manner, and the water storage space is communicated with the fluid channel through at least one flow guide pipeline; and the at least one exhaust pipeline is communicated with the water storage space. The flow guide pipeline, the water storage space and the exhaust pipeline form a composite heat dissipation system, the flow guide pipeline, the water storage space and the exhaust pipeline cooperate to form a directional heat dissipation air channel, the purpose of air cooling heat dissipation is achieved, and the effective utilization rate of airflow is improved; water stored in the water storage space achieves two-phase cooling heat dissipation through phase change heat absorption, and when air cooling heat dissipation and two-phase cooling heat dissipation work cooperatively, the heat dissipation effect can be improved, and the larger and larger heat dissipation requirements of the electric appliance box are met.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a heat dissipation duct structure and an air conditioner. Background Technology

[0002] Currently, the electrical box on the outside of air conditioner outdoor units generally uses a waterproof side panel design, which physically isolates the area to prevent rainwater penetration. However, as the industry's demands for the functionality of air conditioner outdoor units increase, the mainboard inside the electrical box needs to support more power devices, resulting in increased current handling and heat generation. Current heat dissipation methods primarily rely on lateral air cooling and condenser pipes for auxiliary cooling.

[0003] Among them, side-flow cooling utilizes the residual pressure of an axial fan to create turbulence, but the outdoor unit of the air conditioner lacks a corresponding fixed air duct, resulting in low effective utilization of airflow and very limited heat dissipation effect, which cannot meet the ever-increasing heat dissipation needs of electrical boxes. Utility Model Content

[0004] This utility model provides a heat dissipation duct structure and an air conditioner to solve the problem that the outdoor unit of an air conditioner lacks a corresponding fixed duct, resulting in low effective utilization of airflow and very limited heat dissipation effect.

[0005] The technical solution of this utility model is a heat dissipation duct structure, including:

[0006] outer shell;

[0007] A protective plate is fitted with an electrical box, and a fluid channel is formed between the windward side of the protective plate and the corresponding outer shell; a water storage space is provided on the protective plate corresponding to the heat-generating area of ​​the electrical box, and the water storage space is connected to the fluid channel through at least one guide pipe;

[0008] At least one vent pipe communicating with the water storage space.

[0009] Furthermore, both the flow guide pipe and the exhaust pipe are located at the top of the water storage space.

[0010] Furthermore, a guide plate is provided at the inlet of the fluid channel corresponding to the guide pipe, and the guide plate is used to directionally guide the liquid in the fluid channel into the guide pipe.

[0011] Furthermore, the guide plate is inclined.

[0012] Furthermore, the inlet of the flow guide pipe is equipped with a grid structure, which is used to block external dust and impurities from entering the flow guide pipe.

[0013] Furthermore, a Venturi effect structure is provided at the front end of the inlet of the exhaust pipe, which is used to accelerate the airflow out of the exhaust pipe.

[0014] Furthermore, an anti-siphon structure is provided on the side of the exhaust pipe near the water storage space. The anti-siphon structure is used to prevent the liquid in the water storage space from flowing backward due to the siphon effect.

[0015] Furthermore, the heat dissipation duct structure also includes:

[0016] At least one discharge pipe communicating with the water storage space, wherein the inlet height of the discharge pipe is lower than the inlet height of the exhaust pipe and the outlet height of the guide pipe.

[0017] Furthermore, the tail end of the discharge pipe is configured as a funnel structure, which is used to prevent the outflowing liquid from splashing and to limit the direction of liquid outflow.

[0018] This utility model also proposes an air conditioner, including an outdoor unit, wherein the outdoor unit includes the heat dissipation duct structure described above.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] This invention constructs a composite heat dissipation system through a flow guide pipe, a water storage space, and an exhaust pipe. The flow guide pipe, water storage space, and exhaust pipe work together to form a directional heat dissipation air duct, achieving the purpose of air cooling and improving the effective utilization rate of airflow and heat dissipation effect. The water stored in the water storage space absorbs heat through phase change to achieve two-phase cooling. When air cooling and two-phase cooling work together, the heat dissipation effect can be further improved to meet the increasing heat dissipation requirements of electrical boxes. Attached Figure Description

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects and not to describe a particular order.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the outdoor unit of the air conditioner proposed in this utility model;

[0024] Figure 2 for Figure 1 An enlarged schematic diagram of reference numeral A in the attached figure;

[0025] Figure 3 This is a schematic diagram of a structure of the protective plate proposed in this utility model;

[0026] Figure 4 for Figure 3 An enlarged view of reference numeral B in the attached diagram;

[0027] Figure 5 This is a schematic diagram of another structure of the protective plate proposed in this utility model;

[0028] Figure 6 for Figure 5 Enlarged schematic diagram of reference numeral C in the attached figure;

[0029] Figure 7 This is another structural schematic diagram of the protective plate proposed in this utility model.

[0030] Figure label:

[0031] 10. Outer shell;

[0032] 20. Electrical box;

[0033] 30. Protective panels;

[0034] 301. Water storage space; 302. Diversion pipe; 303. Venting pipe; 304. Discharge pipe; 3041. Horizontal section; 3042. Inclined section; 3043. Funnel structure; 305. Grille structure; 306. Waterproof flexible sheet; 307. Snap-fit ​​structure; 308. Cable passage hole;

[0035] 40. Fluid channels;

[0036] 401. Deflector plate;

[0037] 50. Axial flow fan. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present utility model, and does not imply that every embodiment of the present utility model must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0039] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0040] In some embodiments, to fully utilize the turbulence generated by the residual pressure of the axial fan 50 and improve the heat dissipation effect, thereby meeting the increasing heat dissipation requirements of the electrical box 20, such as... Figures 1-3 As shown, this utility model proposes a heat dissipation duct structure, including:

[0041] 10 outer casings;

[0042] A protective plate 30 is fitted with an electrical box 20; a fluid channel 40 is formed between the windward side of the protective plate 30 and the corresponding outer shell 10; a water storage space 301 is provided on the protective plate 30 corresponding to the heat-generating area of ​​the electrical box 20, and the water storage space 301 is connected to the fluid channel 40 through at least one guide pipe 302;

[0043] At least one vent pipe 303 communicating with the water storage space 301.

[0044] It should be noted that the outer casing 10 proposed in this embodiment is preferably the outer casing of an air conditioner outdoor unit, and the electrical box 20 is matched and installed on the side of the protective plate 30 along the airflow blowing out by the axial fan 50; the guide pipe 302 has the function of guiding gas and guiding liquid; the inlet of the guide pipe 302 is set on the fluid channel 40, the outlet of the guide pipe 302 and the inlet of the exhaust pipe 303 are both set on the water storage space 301, the outlet of the exhaust pipe 303 is set on the side wall of the protective plate 30 away from the fluid channel 40, and the outlet of the fluid channel 40 and the outlet of the exhaust pipe 303 are located on the opposite side walls of the protective plate 30.

[0045] Furthermore, the flow guiding pipes 302 proposed in this embodiment are preferably three, and the three flow guiding pipes 302 share the same outlet; the exhaust pipe 303 is preferably one.

[0046] The heat dissipation duct structure proposed in this embodiment has the following heat dissipation scenarios:

[0047] Firstly, when the outside environment is not raining and there is no water stored in the water storage space 301, the outdoor unit of the air conditioner is working normally, and the electrical box 20 is also working normally and emitting heat. The heat will be transferred to the protective plate 30, and then the residual pressure of the axial fan 50 will form turbulence, causing the outside airflow to pass through the guide pipe 302 → water storage space 301 → exhaust pipe 303 in sequence, thereby carrying away the heat on the protective plate 30 and achieving the purpose of air cooling.

[0048] Secondly, when it is not raining in the outside environment, and the water storage space 301 contains water but does not submerge the inlet of the exhaust pipe 303, the outdoor unit of the air conditioner works normally, and the electrical box 20 also works normally and generates heat. The heat is transferred to the protective plate 30, and then the outside airflow passes through the guide pipe 302 → water storage space 301 → exhaust pipe 303 in sequence, thereby carrying away the heat on the protective plate 30 and achieving the purpose of air cooling. At the same time, the water stored in the water storage space 301 absorbs the heat on the protective plate 30 and evaporates to form water vapor. The water vapor is discharged through the exhaust pipe 303, thereby carrying away the heat on the protective plate 30 and achieving the purpose of two-phase cooling.

[0049] Thirdly, when it rains in the outside environment, the outdoor unit of the air conditioner works normally, and the electrical box 20 also works normally and generates heat. The heat is transferred to the protective plate 30, and the rainwater will gather in the fluid channel 40. Some of the rainwater will be discharged directly through the fluid channel 40, and the remaining rainwater will enter the water storage space 301 through the guide pipe 302. Then, the rainwater in the water storage space 301 will absorb the heat on the protective plate 30 and evaporate to form water vapor. The water vapor will be discharged through the exhaust pipe 303, thereby taking away the heat on the protective plate 30 and achieving the purpose of two-phase cooling and heat dissipation.

[0050] Furthermore, the rainwater flowing into the diversion pipe 302 will inevitably carry some air, and the incoming air will be cooled by air. Of course, if the rainwater fills the water storage space 301, then only two-phase cooling can be carried out, and at this time the rainwater will not continue to flow into the diversion pipe 302, but will be discharged directly through the fluid channel 40.

[0051] Therefore, this utility model constructs a composite heat dissipation system through a flow guide pipe 302, a water storage space 301, and an exhaust pipe 303. The flow guide pipe 302, the water storage space 301, and the exhaust pipe 303 work together to form a directional heat dissipation air duct, achieving the purpose of air cooling and improving the effective utilization rate of airflow and heat dissipation effect. The water stored in the water storage space 301 achieves two-phase cooling through phase change heat absorption. When air cooling and two-phase cooling work together, the heat dissipation effect is further improved, meeting the increasing heat dissipation needs of the electrical box 20.

[0052] In some embodiments, such as Figures 2-3 As shown, the windward side of the protective plate 30 corresponds to the side of the protective plate 30 away from the axial fan 50, and a waterproof flexible plate 306 extends vertically outward along its axial direction on the windward side of the protective plate 30. The windward side of the protective plate 30 is pressed against the corresponding outer shell 10 through the waterproof flexible plate 306 to form a sealed connection. Then, the protective plate 30 and the outer shell 10 are fixedly connected by anti-vibration bolts. At this time, the windward side of the protective plate 30, the waterproof flexible plate 306 and the corresponding outer shell 10 enclose and form a fluid channel 40. The edge of the protective plate 30 facing away from the water storage space 301 is provided with multiple buckle structures 307, which are used to fix the electrical box 20.

[0053] In some embodiments, such as Figure 3 As shown, both the flow guide pipe 302 and the exhaust pipe 303 are located at the top of the water storage space 301. This top layout utilizes the buoyancy of hot air to create a self-driven "chimney effect," increasing the airflow velocity discharged from the exhaust pipe 303.

[0054] It should be noted that the water storage space 301 is rectangular in shape, and the flow guide pipe 302 and the exhaust pipe 303 are located on the top of the water storage space 301 and on both sides along its width direction, respectively; of course, the water storage space 301 can also be cylindrical, prismatic or other suitable shapes, which are not limited here.

[0055] The portion of the diversion pipe 302 located in the width direction of the protective plate 30 has an angle greater than or equal to 4° with the horizontal direction to facilitate rainwater flow.

[0056] In some embodiments, to ensure that the liquid in the fluid channel 40 can be concentrated and introduced into the guide pipe 302, such as Figure 5 As shown, the fluid channel 40 is provided with a guide plate 401 corresponding to the inlet of the guide pipe 302. The guide plate 401 is used to guide the liquid in the fluid channel 40 into the guide pipe 302 in a directional manner.

[0057] In order to allow the liquid in the fluid channel 40 to be introduced into the guide pipe 302 more quickly, the guide plate 401 is inclined.

[0058] It should be noted that the bottom end of the guide plate 401 is set at the bottom end of the inlet of the corresponding guide pipe 302, and then tilted upward.

[0059] In some embodiments, to prevent blockage of the guide pipe 302, which would affect the entry of liquid or airflow into the guide pipe 302, such as... Figure 6The inlet of the flow guide pipe 302 shown is equipped with a grid structure 305, which is used to block external dust and impurities from entering the flow guide pipe 302.

[0060] Of course, the grid structure 305 proposed in this embodiment can also be replaced with a filter screen, which is not limited here.

[0061] In some embodiments, in order to further increase the outflow velocity of gas in the water storage space 301 and thereby improve the heat dissipation effect of the heat dissipation duct structure, a Venturi effect structure (not shown, same throughout) is matched at the front end of the inlet of the exhaust pipe 303. The Venturi effect structure is used to accelerate the outflow of air in the exhaust pipe 303.

[0062] Understandably, the Venturi effect structure is a variable cross-section pipe device designed based on fluid dynamics principles. It changes the airflow velocity and pressure distribution through contraction-expansion morphology, thereby achieving directional control of locally accelerated heat dissipation airflow and reducing inlet turbulence in exhaust pipe 303.

[0063] The Venturi effect structure has a contraction section and an expansion section in sequence along the gas flow direction of the exhaust pipe 303. The cross-sectional area of ​​the exhaust pipe 303 in the contraction section gradually decreases, forcing the airflow to accelerate to the highest speed section at the throat; while the throat is the area with the smallest cross-section. The cross-sectional area of ​​the exhaust pipe 303 in the expansion section gradually recovers, reducing the total pressure loss through pressure recovery.

[0064] In some embodiments, to prevent liquid in the water storage space 301 from flowing into the exhaust pipe 303 and affecting the heat dissipation effect of the heat dissipation duct structure, an anti-siphon structure (not shown, same throughout) is matched on the side of the exhaust pipe 303 near the water storage space 301. The anti-siphon structure is used to block the reverse flow of liquid in the water storage space 301 due to the siphon effect.

[0065] Understandably, anti-siphon structures have built-in one-way valves or air isolation structures, which disrupt the continuous negative pressure conditions required for liquid backflow.

[0066] The exhaust pipe 303 is preferably S-shaped, which can further prevent liquid in the water storage space 301 from flowing into the exhaust pipe 303.

[0067] In some embodiments, such as Figure 3 As shown, the heat dissipation duct structure further includes:

[0068] At least one discharge pipe 304 communicating with the water storage space 301, wherein the inlet height of the discharge pipe 304 is lower than the inlet height of the exhaust pipe 303 and the outlet height of the guide pipe 302.

[0069] Specifically, the discharge pipe 304 includes a horizontal section 3041 and an inclined section 3042;

[0070] The beginning of the horizontal section 3041 is connected to the middle of the water storage space 301, and the end of the horizontal section 3041 is connected to the beginning of the inclined section 3042.

[0071] It should be noted that the inlet of the discharge pipe 304 is located in the middle of the water storage space 301, which can ensure that the liquid stored in the lower half of the water storage space 301 is cooled by two phases, while the upper half of the water storage space 301 is cooled by air. This allows the air cooling and two-phase cooling to work together to further improve the heat dissipation effect and meet the increasing heat dissipation needs of the electrical box 20.

[0072] The ratio of the cross-sections of the diversion pipe 302 and the discharge pipe 304 is preferably between 5:1 and 6:1. This design is intended to control the outflow speed of rainwater, allowing the rainwater to fully absorb heat while also being discharged in a timely manner.

[0073] The heat dissipation duct structure proposed in this embodiment has the following heat dissipation scenarios:

[0074] Firstly, when the external environment is not raining and there is no water stored in the water storage space 301, the outdoor unit of the air conditioner is working normally, and the electrical box 20 is also working normally and emitting heat. The heat will be transferred to the protective plate 30, and then the residual pressure of the axial fan 50 will form turbulence, causing the external airflow to pass through the guide pipe 302 → water storage space 301 → exhaust pipe 303 and / or discharge pipe 304 in sequence, thereby carrying away the heat on the protective plate 30 and achieving the purpose of air cooling.

[0075] Secondly, when it is not raining in the outside environment and water is stored in the water storage space 301, the outdoor unit of the air conditioner is working normally, and the electrical box 20 is also working normally and emitting heat. The heat will be transferred to the protective plate 30, and then the outside airflow will pass through the guide pipe 302 → water storage space 301 → exhaust pipe 303 in sequence, thereby carrying away the heat on the protective plate 30 and achieving the purpose of air cooling. At the same time, the water stored in the water storage space 301 will absorb the heat on the protective plate 30 and evaporate to form water vapor. The water vapor will be discharged through the exhaust pipe 303, thereby carrying away the heat on the protective plate 30 and achieving the purpose of two-phase cooling.

[0076] Of course, some water vapor or heat-absorbing airflow will be discharged from the exhaust pipe 304 at this time.

[0077] Thirdly, when it rains in the outside environment, the outdoor unit of the air conditioner works normally, and the electrical box 20 also works normally and generates heat. The heat is transferred to the protective plate 30, and the rainwater will gather in the fluid channel 40. Some of the rainwater will be discharged directly through the fluid channel 40, and the remaining rainwater will enter the water storage space 301 through the guide pipe 302. Then, the rainwater in the water storage space 301 will absorb the heat on the protective plate 30 and evaporate to form water vapor. The water vapor will be discharged through the exhaust pipe 303, thereby taking away the heat on the protective plate 30 and achieving the purpose of two-phase cooling and heat dissipation.

[0078] Furthermore, if the liquid level in the water storage space 301 is higher than the inlet of the discharge pipe 304, then rainwater will be discharged to the outside through the discharge pipe 304. If the discharge rate of the water in the water storage space 301 is lower than the inlet rate, then the liquid level in the water storage space 301 will continue to rise until it reaches the outlet of the guide pipe 302. At this time, only liquid cooling can be performed because the water in the water storage space 301 absorbs heat but does not reach the degree of evaporation before being discharged to the outside through the discharge pipe 304. If the water in the water storage space 301 is discharged through the discharge pipe 304 and the liquid level is lower than the outlet of the guide pipe 302 but higher than the inlet of the discharge pipe 304, then only air cooling and liquid cooling can be performed. Only if the liquid level of the water in the water storage space 301 is lower than the inlet of the discharge pipe 304 can air cooling and two-phase cooling be performed so that air cooling and two-phase cooling can work together.

[0079] In some embodiments, such as Figure 4 As shown, the tail end of the discharge pipe 304 is configured as a funnel structure 3043, which is used to prevent the outflowing liquid from splashing and to limit the direction of liquid outflow.

[0080] It should be noted that the tail end of the discharge pipe 304 is equivalent to the tail end of the inclined section 3042; the cross-section of the funnel structure 3043 gradually decreases along the flow direction of the discharge pipe 304.

[0081] Thus, according to Bernoulli's equation, when the cross-sectional area of ​​the pipe is reduced to 1 / 4 of the original area (S2 = S1 / 4), the fluid velocity will increase to 4 times the initial velocity (v2 = 4v1), thereby increasing the liquid discharge velocity of the discharge pipe 304, reducing turbulence, and the conical design can also guide the liquid to discharge along a predetermined trajectory, restrict the direction of rainwater flow, and avoid secondary pollution caused by disorderly splashing.

[0082] In some embodiments, such as Figure 7As shown, the electrical box 20 is divided into a high-voltage area and a low-voltage area. At least one wire hole 308 is provided on the windward side of the protective plate 30 at the boundary between the high-voltage area and the low-voltage area. The wire hole 308 can effectively prevent the wire from contacting the protective plate 30, improving consistency and production efficiency. Moreover, the wire hole 308 is set at the boundary between the high-voltage and low-voltage areas, minimizing wire interference.

[0083] In some embodiments, such as Figure 1 As shown, this utility model also proposes an air conditioner, including an outdoor unit, which includes the heat dissipation duct structure described above.

[0084] The outdoor unit of the air conditioner includes an outer casing 10. An axial fan 50 is provided on one side of the outer casing 10 along its length, and an electrical box 20 is provided on the other side of the outer casing 10 along its length. The electrical box 20 is mounted on a protective plate 30. The side of the protective plate 30 away from the axial fan 50 (equivalent to the windward side) is sealed to the corresponding outer casing 10 through a waterproof flexible plate 306 to prevent rainwater from entering from the windward side of the protective plate 30 and contacting the electrical box 20, thereby affecting the operation of the components inside the electrical box 20.

[0085] Then, the axial fan 50 starts and exhausts gas, causing turbulence in the air around the outdoor unit. Some of this turbulence enters the fluid channel 40, and then sequentially flows into the guide pipe 302 → water storage space 301 → exhaust pipe 303, achieving the purpose of air cooling. Of course, the higher the operating power of the outdoor unit, the greater the heat generated by the electrical box 20, the higher the speed of the axial fan 50, and the stronger the turbulence around the outdoor unit. This results in more airflow entering the guide pipe 302, leading to better heat dissipation and forming a positive feedback regulation.

[0086] When it rains, rainwater is discharged through fluid channel 40, and some rainwater enters water storage space 301 through guide pipe 302 for two-phase cooling. The generated water vapor is then discharged through exhaust pipe 303. If the water level in water storage space 301 is lower than the inlet of exhaust pipe 304, then both air cooling and two-phase cooling can occur simultaneously. If the water level in water storage space 301 is higher than the inlet of exhaust pipe 304 but lower than the outlet of guide pipe 302, then only liquid cooling and air cooling can occur. If the water level in water storage space 301 is level with the outlet of guide pipe 302, then only liquid cooling can occur.

[0087] Of course, if it is not raining outside and two-phase cooling is needed for auxiliary heat dissipation, water can be actively injected into the guide pipe 302, but the liquid level in the water storage space 301 should be lower than the inlet of the discharge pipe 304 so that there is water in the water storage space 301 for two-phase cooling. This is not limited here.

[0088] Therefore, this utility model constructs a composite heat dissipation system through a guide pipe 302, a water storage space 301, and an exhaust pipe 303. The guide pipe 302, the water storage space 301, and the exhaust pipe 303 work together to form a directional heat dissipation air duct, achieving the purpose of air cooling, improving the effective utilization rate of airflow, and improving the heat dissipation effect. When the water level in the water storage space 301 is lower than the inlet of the exhaust pipe 304, two-phase cooling is achieved through phase change heat absorption. When the water level in the water storage space 301 is higher than the inlet of the exhaust pipe 304, only liquid cooling can be performed. Furthermore, when air cooling and two-phase cooling / liquid cooling work together, the heat dissipation effect is further improved, meeting the increasing heat dissipation needs of the electrical box 20.

[0089] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A heat dissipation duct structure, characterized in that, include: Outer shell (10); A protective plate (30) is fitted with an electrical box (20), and a fluid channel (40) is formed between the windward side of the protective plate (30) and the corresponding outer shell (10); the protective plate (30) is provided with a water storage space (301) corresponding to the heat-generating area of ​​the electrical box (20), and the water storage space (301) is connected to the fluid channel (40) through at least one guide pipe (302); At least one vent pipe (303) communicating with the water storage space (301).

2. The heat dissipation duct structure according to claim 1, characterized in that, Both the flow guide pipe (302) and the exhaust pipe (303) are located at the top of the water storage space (301).

3. The heat dissipation duct structure according to claim 1, characterized in that, The fluid channel (40) is provided with a guide plate (401) corresponding to the inlet of the guide pipe (302), and the guide plate (401) is used to guide the liquid in the fluid channel (40) into the guide pipe (302).

4. The heat dissipation duct structure according to claim 3, characterized in that, The guide plate (401) is set at an angle.

5. The heat dissipation duct structure according to claim 1, characterized in that, The inlet of the flow guide pipe (302) is equipped with a grid structure (305), which is used to block external dust and impurities from entering the flow guide pipe (302).

6. The heat dissipation duct structure according to claim 1, characterized in that, The front end of the inlet of the exhaust pipe (303) is provided with a Venturi effect structure, which is used to accelerate the airflow in the exhaust pipe (303).

7. The heat dissipation duct structure according to claim 1, characterized in that, The exhaust pipe (303) is equipped with an anti-siphon structure on the side near the water storage space (301). The anti-siphon structure is used to block the reverse flow of liquid in the water storage space (301) due to the siphon effect.

8. The heat dissipation duct structure according to claim 1, characterized in that, The heat dissipation duct structure also includes: At least one discharge pipe (304) communicating with the water storage space (301), wherein the inlet height of the discharge pipe (304) is lower than the inlet height of the exhaust pipe (303) and the outlet height of the guide pipe (302).

9. The heat dissipation duct structure according to claim 8, characterized in that, The tail end of the discharge pipe (304) is configured as a funnel structure (3043), which is used to prevent the outflowing liquid from splashing and to limit the direction of liquid outflow.

10. An air conditioner, comprising an outdoor unit, characterized in that, The outdoor unit of the air conditioner includes the heat dissipation duct structure as described in any one of claims 1 to 9.

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