在噴淋清洗機的運作體系中，高壓噴嘴作為關鍵部件，其性能優劣直接關乎清洗成效，而流道設計又是決定高壓噴嘴性能的核心要素，尤其是對水流沖擊力有著顯著影響。

　　In the operation system of the spray cleaning machine, the high-pressure nozzle is a key component, and its performance directly affects the cleaning effect. The design of the flow channel is the core element that determines the performance of the high-pressure nozzle, especially having a significant impact on the water flow impact force.

　　從流道形狀來看，常見的有直線型、彎曲型等。直線型流道能使水流在相對規整的路徑中前行，減少不必要的紊流。當水流經直線型流道時，由于流道壁面與水流方向平行度高，水流可保持較為穩定的流速和流向，從而在出口處能以較高的速度噴射而出，產生強大的沖擊力。例如在一些金屬表面頑固污漬的清洗場景中，直線型流道噴嘴能精準地將高壓水集中噴射到污漬部位，有效去除污垢。彎曲型流道則較為特殊，像 U 型流道。它能在一定程度上平衡水流的壓力波動，當水流進入彎曲段時，流速方向發生改變，水流的動能會在彎曲過程中進行重新分配。合理設計的彎曲型流道可以避免因水流方向突變而產生過大的能量損失，并且能使水流在出口處形成特定的噴射角度和分布狀態，從而提高清洗的覆蓋范圍和沖擊力的均勻性。在清洗大面積且形狀不規則的物體時，彎曲型流道噴嘴可通過調整噴射角度，讓水流均勻地覆蓋到物體表面各個部位，實現高效清洗。

　　From the shape of the flow channel, common types include straight and curved shapes. A straight channel can allow water flow to move in a relatively regular path, reducing unnecessary turbulence. When water flows through a straight channel, due to the high parallelism between the channel wall and the direction of water flow, the water flow can maintain a relatively stable velocity and direction, and can be ejected at a high speed at the outlet, generating a strong impact force. For example, in some cleaning scenarios with stubborn stains on metal surfaces, the linear flow nozzle can accurately concentrate high-pressure water and spray it onto the stain area, effectively removing dirt. Curved channels are more special, like U-shaped channels. It can balance the pressure fluctuations of water flow to a certain extent. When the water flow enters the curved section, the direction of flow velocity changes, and the kinetic energy of the water flow will be redistributed during the bending process. A properly designed curved flow channel can avoid excessive energy loss caused by sudden changes in water flow direction, and can form a specific spray angle and distribution state of water flow at the outlet, thereby improving the coverage range of cleaning and the uniformity of impact force. When cleaning large and irregularly shaped objects, the curved channel nozzle can adjust the spray angle to evenly cover all parts of the object surface, achieving efficient cleaning.

　　流道的尺寸參數，諸如直徑、長度等，對沖擊力的影響也不容小覷。較大的流道直徑可以允許更多的水流通過，在壓力恒定的情況下，水流量的增加意味著單位時間內攜帶的能量增多，最終在噴嘴出口處轉化為更強的沖擊力。不過，流道直徑并非越大越好，如果直徑過大，可能會導致水流速度降低，反而削弱沖擊力。流道長度方面，適當增加長度能使水流在流道內充分加速，獲取更多的動能，進而增強出口處的沖擊力。但流道過長也會帶來弊端，水流與流道壁面的摩擦距離增大，能量損耗增加，同樣會降低沖擊力。所以，在實際設計中，需要綜合考慮壓力源的壓力大小、所需清洗的物體特性等因素，精確地確定流道的直徑和長度，以達到最佳的沖擊力效果。

　　The size parameters of the flow channel, such as diameter, length, etc., also have a significant impact on the impact force. A larger diameter of the flow channel allows more water to pass through. Under constant pressure, an increase in water flow rate means an increase in the energy carried per unit time, which is ultimately converted into a stronger impact force at the nozzle outlet. However, the larger the diameter of the channel, the better. If the diameter is too large, it may cause a decrease in water flow velocity and weaken the impact force. In terms of channel length, increasing the length appropriately can fully accelerate the water flow inside the channel, obtain more kinetic energy, and thereby enhance the impact force at the outlet. However, a long flow channel can also bring drawbacks, as the friction distance between the water flow and the channel wall increases, energy loss increases, and the impact force is also reduced. Therefore, in practical design, it is necessary to comprehensively consider factors such as the pressure magnitude of the pressure source and the characteristics of the object to be cleaned, and accurately determine the diameter and length of the flow channel to achieve the best impact force effect.

　　此外，流道內部的表面粗糙度對沖擊力也有影響。表面粗糙度低的流道，水流與壁面之間的摩擦阻力小，水流在流動過程中的能量損失就少，這樣就能保證更多的能量用于產生沖擊力。相反，若流道內表面粗糙，水流在流動時容易形成紊流，部分能量會因紊流而被消耗，導致出口處的沖擊力下降。因此，在制造高壓噴嘴流道時，通常會采用高精度的加工工藝，確保流道內表面盡可能光滑，減少能量損耗，提升水流的沖擊力。

　　In addition, the surface roughness inside the flow channel also affects the impact force. A channel with low surface roughness has less frictional resistance between the water flow and the wall, resulting in less energy loss during the flow of the water flow. This ensures that more energy is used to generate impact force. On the contrary, if the inner surface of the channel is rough, the water flow is prone to turbulent flow, and some energy will be consumed due to turbulence, resulting in a decrease in the impact force at the outlet. Therefore, when manufacturing high-pressure nozzle flow channels, high-precision machining processes are usually used to ensure that the inner surface of the flow channel is as smooth as possible, reduce energy loss, and enhance the impact force of the water flow.

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