WO2023087511A1 - 一种割草机 - Google Patents

一种割草机 Download PDF

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Publication number
WO2023087511A1
WO2023087511A1 PCT/CN2021/143700 CN2021143700W WO2023087511A1 WO 2023087511 A1 WO2023087511 A1 WO 2023087511A1 CN 2021143700 W CN2021143700 W CN 2021143700W WO 2023087511 A1 WO2023087511 A1 WO 2023087511A1
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WIPO (PCT)
Prior art keywords
radiator
air
air inlet
air duct
working unit
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Ceased
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PCT/CN2021/143700
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English (en)
French (fr)
Inventor
卞小贤
刘涛
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Suzhou Cleva Electric Appliance Co Ltd
Suzhou Cleva Precision Machinery and Technology Co Ltd
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Suzhou Cleva Electric Appliance Co Ltd
Suzhou Cleva Precision Machinery and Technology Co Ltd
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Publication date
Application filed by Suzhou Cleva Electric Appliance Co Ltd, Suzhou Cleva Precision Machinery and Technology Co Ltd filed Critical Suzhou Cleva Electric Appliance Co Ltd
Publication of WO2023087511A1 publication Critical patent/WO2023087511A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the utility model relates to a mower, in particular to a mower.
  • the current smart lawn mower recognizes the lawn through the visual sensor/camera, and heat will be generated during the work of the visual sensor/camera.
  • the usual heat dissipation method is to expose the visual sensor/camera to the air and dissipate heat through the air.
  • the visual sensor/camera itself will also absorb the heat of solar radiation, resulting in poor cooling effect. good, eventually reducing the working time of the mower, or even causing the mower to stop.
  • the technical problem to be solved by the embodiment of the utility model is to provide a lawn mower, which can force the air to enter the air duct by advancing the lawn mower, and dissipate heat from the radiator in the air duct, thereby solving the problem of heat dissipation of the heating components in the lawn mower .
  • the utility model provides a lawnmower, which includes a body and a first working unit, the first working unit is placed in the body, and the first working unit generates heat after being powered on.
  • An air duct is provided in the body, wherein the air inlet of the air duct is arranged on the windward surface of the front end of the body, the air outlet is arranged on the body behind the air inlet, and a first air duct is arranged in the air duct.
  • a radiator the first radiator is connected to the heat generating part of the first working unit.
  • the area of the air inlet is larger than the cross-sectional area of the air duct at the position of the first radiator.
  • the total area of the multiple air inlets is larger than the cross-sectional area of the air duct at the position of the first radiator.
  • the first working unit is a camera or a visual sensor, located above the air inlet on the body.
  • a rechargeable battery is disposed inside the body, and the charging port of the rechargeable battery is located on the windward surface of the front end of the body; correspondingly, the air inlet communicates with the upper part of the charging port.
  • the body includes a base and an upper casing, wherein the first working unit is located on the upper casing, the air inlet is located on the upper casing, or the air inlet is located on the upper casing and Between the bases, or the air inlet is located on the bases.
  • the base when the air inlet is located between the upper case and the base, the base has an upwardly inclined slope.
  • the air inlet is located near the bottom of the body.
  • a sunshade structure is also included, located on the windward surface of the front end of the body, and the sunshade structure is located directly above the first working unit.
  • the first radiator is directly connected to the heat-generating part of the first working unit, or the first radiator is connected to the heat-generating part of the first working unit through a heat pipe.
  • the air outlet is located on the top, two sides or the rear of the body.
  • a second radiator is further provided in the air duct, and the second radiator is connected to a second working unit through a heat pipe, and the second working unit is located in the body.
  • the lawn mower provided by the utility model is provided with an air duct in the casing, and the air inlet is arranged in the front, and the windward surface is in contact with the air when the lawn mower is moving forward during the working process, forcing the air to enter the air duct through the air inlet. And through the radiator of the camera, the heat on the radiator is taken away, so as to realize the cooling effect of the camera, which can prolong the working time of the entire lawn mower, especially in high temperature weather;
  • the air duct uses the airflow generated by the lawn mower, without using power devices such as fans, it will not consume energy, and the air inlet is set in the front, which can also reduce the wind resistance to a certain extent, and can extend the length of the lawn mower. working hours;
  • the heat generated by other structures in the lawn mower can also be dissipated through the air duct, thereby prolonging the working time of the lawn mower.
  • Fig. 1 is a schematic structural view of a lawnmower provided in this embodiment.
  • Fig. 2 is another structural schematic diagram of the lawn mower provided by this embodiment, in which multiple air inlets are shown in the figure.
  • this embodiment provides a lawnmower, which can be an intelligent lawnmower, which recognizes the height of the front lawn through a visual sensor or a camera, thereby judging whether it is necessary to continue moving forward or turn to trim.
  • the smart lawn mower includes a body 10 and a camera 14, and the camera 14 is placed on the front end of the body 10 for real-time shooting of the lawn image in front of the smart lawn mower. It will generate heat, especially when the temperature is high, it will generate more heat, so it is usually necessary to arrange a radiator 15 at the heat generating part of the camera 14 . How to conduct the heat generated by the camera so as to reduce the temperature of the camera 14 and avoid shutdown caused by overheating of the camera is a technical problem to be solved by the utility model.
  • the air inlet 131 of the air duct 13 is arranged on the windward surface of the front end of the intelligent lawn mower body 10, and the air outlet 132 is arranged on the intelligent lawn mower body 10 behind the camera 14, which can be the top or the side, It can also be the rear end; the radiator 15 of the camera 14 is placed in the air duct 13, and after the airflow enters the air duct 13 through the air inlet 131, it can blow to the fins of the radiator 15 so as to affect the fins of the radiator 15.
  • the cooling of the chip is due to the heat exchange between the radiator 15 and the camera 14, thereby reducing the temperature of the camera 14.
  • the air inlet 131 and the air outlet 132 of the air duct 13 are arranged one after another.
  • the air flow only needs to automatically move relative to the air duct 13 along with the advancement of the intelligent lawn mower, and pass through the air duct 13 arranged at the rear.
  • the air outlet 132 flows out, and there is no need to design a fan inside the air duct 13 to drive the airflow during this process, so that no increase in design costs is required and no additional power consumption is required; at the same time, the arrangement of the air inlet 131 and the air outlet 132 in tandem In this way, the airflow on the windward side of the intelligent lawnmower body 10 naturally enters the air inlet 131 during the advancement of the intelligent lawnmower, which reduces the windward area and wind resistance, so that the motor drives the driving wheel 16 forward. The process consumes less electricity, which can achieve the effect of energy saving.
  • the camera 14 in this embodiment can also use a visual sensor, and is not limited to the camera and the visual sensor, and can also cool down other heating components through the air duct 13 .
  • other heating components can also be connected with the radiator 15 in the air duct 13, thereby realizing its cooling.
  • a sunshade structure 18 is provided on the body 10, and the sunshade structure 18 protrudes forward from the body to form a shield below it.
  • the camera 14 is placed in the shielding space formed by the sunshade structure 18, so that the camera 14 can be placed in a cool place in the hot summer, avoiding the camera 14 from being exposed to the sun, and reducing the ultraviolet radiation received by the camera, thereby preventing the camera from being exposed to sunlight.
  • the temperature rise caused by exposure also reduces the aging of the camera caused by ultraviolet radiation, which can prolong the working time and service life of the camera.
  • the lawnmower provided by this embodiment is provided with an air duct 13 in the body 10, and the air inlet 131 is arranged on the windward surface in front of the lawnmower, and the windward surface is in contact with the air when the lawnmower is moving forward during operation. , force the air to enter the air duct through the air inlet, and pass through the radiator of the camera to take away the heat on the radiator, so as to realize the cooling effect of the camera and prolong the working time of the entire lawn mower, especially in high temperature weather working hours in .
  • the size of the air inlet 131 is related to the size of the airflow entering the air duct 13, so in order to obtain a larger flow rate, the size of the air inlet 131 can be increased; the airflow velocity flowing through the radiator 15 is related to The heat dissipation efficiency of the radiator 15, that is, the higher the flow velocity, the better the heat dissipation effect of the radiator 15, and in the case of a constant flow rate, the smaller the cross-sectional area, the higher the flow velocity.
  • the area of the air inlet 131 can be designed to be larger than the cross-sectional area of the air duct 13 at the position of the radiator 15, so that on the one hand a larger air flow can be obtained through the air inlet 131, and on the other hand On the one hand, it can make the air flow in the air duct 13 have a higher flow velocity when passing through the radiator 15 .
  • the cross-sectional area of the air inlet 131 and the air duct 13 at the position of the radiator the effect of amplifying the flow rate of the airflow can be achieved.
  • the flow velocity of the air inlet 131 and the airflow flowing through the radiator 15 is equal to the forward speed of the intelligent lawn mower, but in the actual working process, due to the internal structure design of the air duct 13, the air flow through the radiator 15
  • the air flow rate of 15 is usually lower than the forward speed of the smart lawn mower, so objectively there is a problem of low heat dissipation efficiency.
  • the area of the air inlet 131 By designing the area of the air inlet 131 to be greater than the cross-sectional area of the air duct 13 at the position of the radiator 15, the effect of amplifying the airflow velocity can be realized, so that the airflow velocity flowing through the radiator 15 is greater than the forward speed of the intelligent mower, thereby It also enables the radiator 15 to obtain a better heat dissipation effect, thereby making the cooling effect of the camera, visual sensor and other heating units that may be connected to the radiator 15 more obvious.
  • multiple air inlets 131 can also be provided. In this case, the problem that the size of a single air inlet is too large will affect the appearance and structural stability.
  • Multiple air inlets 131 can be arranged side by side or dispersedly. When multiple air inlets 131 are provided, the sum of the areas of all the air inlets 131 is greater than the cross-sectional area of the air duct 13 at the position of the radiator 15 .
  • the function of this design is the same as that of the above-mentioned embodiment, and it is also to obtain a larger airflow flow rate and a larger airflow velocity at the same time, so that the heat dissipation effect of the radiator 15 is better.
  • a more significant cooling effect can be brought to the camera, the visual sensor, and other heating units that may be connected to the radiator 15 .
  • the camera or visual sensor of the smart lawn mower is usually arranged at the front end of the main body 10 close to the top.
  • the air inlet 131 is located below the camera 14 or the visual sensor, so that the air inlet 131 can be closer to the lawn.
  • hot weather due to the photosynthesis of plants absorbing heat and the heat absorption effect of water vapor evaporation, the air temperature near the lawn will be lower than or even far lower than the air temperature in the air.
  • the air inlet 131 is set The closer the distance to the lawn, the air inlet 131 can obtain the gas with a lower temperature, so that the temperature difference between the airflow and the radiator 15 is larger, so that the airflow can better dissipate heat to the radiator, and it is connected with the radiator 15.
  • the temperature of the heat-exchanged camera 14 or the vision sensor is lower, so that they can work normally in high temperature weather.
  • the main body 10 is provided with a rechargeable battery.
  • the charging interface of the rechargeable battery can be arranged on the windward surface of the front end of the main body 10; correspondingly, the air inlet 131 communicates with the upper part of the charging interface.
  • Using the charging interface as the air inlet 131 or as a part of the air inlet 131 can further optimize the product structure layout of the intelligent lawnmower.
  • a replaceable battery pack is arranged in the body 10. When the power of the battery pack is exhausted, the smart lawnmower can continue to work as long as a new fully charged battery pack is replaced.
  • the body 10 of the intelligent lawnmower includes a base 12 and an upper casing 11, and the upper casing 11 is docked with the base 12 up and down, and the main structural units such as the battery and the camera of the intelligent lawnmower are fixed. in it.
  • the camera 14 is located on the upper housing 11
  • the air inlet 131 can be optionally located on the upper housing 11 , or the air inlet 131 is located at the joint between the upper housing 11 and the base 12 , or the air inlet 131 is located on the base 12 .
  • most of the air ducts 13 are disposed in the upper housing 11 , but in practical applications, those skilled in the art can also arrange most or even all of the air ducts 13 in the base.
  • the overall size and proportional relationship between the upper casing 11 and the base 12 can be adjusted adaptively, so regardless of the size and proportional relationship between the two, the position of the air inlet 131 is set at The area close to the lawn will allow the air inlet to obtain lower-temperature airflow, which can provide better cooling effect and can extend the working time of the entire smart lawn mower in hot weather.
  • the base 12 when the air inlet 131 is located between the upper casing 11 and the base 12 , the base 12 has an upwardly inclined slope 121 . At this time, the air duct 13 near the air inlet 131 is arranged upward or obliquely upward, so the setting of the slope 121 can guide the airflow into the air inlet 131 more easily.
  • the heat sink 15 can be connected to the heat-generating part of the camera 14 alternatively through a heat pipe, in addition to being directly connected to the heat-generating part of the camera 14 as in the above-mentioned embodiment.
  • the distance between the camera 14 and the radiator 15 can be adjusted, so that the position or posture of the radiator 15 in the air duct 13 can be adjusted, so that the radiator 15 can be more effectively aligned with the direction of the air duct 13 Combined with the flow direction of the airflow, a better heat dissipation effect is obtained.
  • a second heat sink is further provided in the air duct, and the second heat sink is connected to a battery or a motor through a heat pipe, and the battery or motor is located in the body.
  • more than two radiators can be installed in the air duct, which can dissipate heat from multiple different heating parts or heating elements in the smart lawn mower, thereby further ensuring the normal operation of the smart lawn mower in high temperature weather.
  • the two radiators are usually arranged sequentially in the air duct to meet the different temperature requirements of different heat-generating components; but they can also be arranged side by side in the air duct.
  • the structures of the two radiators can be the same or different.
  • the air duct 13 can be arranged horizontally or upwardly, or a combination of upwardly and horizontally as shown in Figure 1-2 can be adopted, first inclined upwards and then horizontally extend back.
  • the intelligent mower also needs to include necessary structures or units such as a cutter, a running mechanism, a protection mechanism, and a control system.
  • the lawn mower provided by the utility model is provided with an air duct in the casing, and the air inlet is arranged in the front, and the windward surface is in contact with the air when the lawn mower is moving forward during the working process, forcing the air to enter the air duct through the air inlet. And through the radiator of the camera, the heat on the radiator is taken away, so as to realize the cooling effect of the camera, which can prolong the working time of the entire lawn mower, especially in high temperature weather;
  • the air duct uses the airflow generated by the lawn mower, without using power devices such as fans, it will not consume energy, and the air inlet is set in the front, which can also reduce the wind resistance to a certain extent, and can extend the length of the lawn mower. working hours;
  • the heat generated by other structures in the lawn mower can also be dissipated through the air duct, thereby prolonging the working time of the lawn mower.

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  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

一种割草机，包括本体和第一工作单元，所述第一工作单元置于所述本体内，并且所述第一工作单元在通电工作后发热，在本体内设有风道，其中所述风道的进风口设置在所述本体前端的迎风面上，出风口设置在所述进风口后方的本体上，在所述风道内设有第一散热器，所述第一散热器与所述第一工作单元的发热部位连接。本发明的割草机，在壳体内设置风道，并将进风口设置在前方，利用割草机工作过程中向前行走时迎风面与空气接触，迫使空气通过进风口进入风道内，并穿过摄像头的散热器，将散热器上的热量带走，从而实现对摄像头散热的作用，能够延长整个割草机的工作时间，特别是在高温天气中的工作时间。

Description

一种割草机 技术领域
本实用新型涉及割草设备，特别是涉及一种割草机。
背景技术
目前的智能割草机通过视觉传感器/摄像头识别草坪，在视觉传感器/摄像头工作过程中会长生热量。通常的散热方式是将视觉传感器/摄像头暴露在空气中，通过空气散热，但是在遇到炎热天气时，暴露在空气中的视觉传感器/摄像头自身也会吸收太阳辐射的热量，导致实际散热效果不佳，最终使割草机的工作时间缩短，甚至导致割草机停机。
另外，还有的产品设计风扇，通过风扇对散热器的表面吹风带走热量，但是散热风扇一方面需要占用产品的空间，并且增加了生产成本和使用成本。为了便于安装风扇，需要设计与风扇适配的固定结构，通常需要对割草机结构进行大幅度调整，使割草机体积增大、重量增加，而风扇工作过程中需要消耗电能，也导致割草机的工作时间缩短。
实用新型内容
本实用新型实施例所要解决的技术问题在于，提供一种割草机，能够通过割草机前进促使空气进入风道，对风道中的散热器散热，从而解决割草机内发热部件散热的问题。
为了解决上述技术问题，本实用新型提供一种割草机，包括本体和第一工作单元，所述第一工作单元置于所述本体内，并且所述第一工作单元在通电工作后发热，在本体内设有风道，其中所述风道的进风口设置在所述本体前端的迎风面上，出风口设置在所述进风口后方的本体上，在所述风道内设有第一散热器，所述第一散热器与所述第一工作单元的发热部位连接。
可选择地，所述进风口的面积大于所述第一散热器位置的所述风道的截面 面积。
可选择地，所述进风口设有多个，并且多个所述进风口的总面积大于所述第一散热器位置的所述风道的截面面积。
可选择地，所述第一工作单元为摄像头或视觉传感器，位于所述本体上所述进风口的上方。
可选择地，所述本体内设有充电电池，并且所述充电电池的充电接口位于所述本体前端的迎风面上；对应地，所述进风口与所述充电接口的上部连通。
可选择地，所述本体包括底座和上壳体，其中所述第一工作单元位于上壳体上，所述进风口位于所述上壳体，或者所述进风口位于所述上壳体和所述底座之间，或者所述进风口位于所述底座上。
可选择地，当所述进风口位于所述上壳体和所述底座之间时，所述底座上具有向上倾斜的斜面。
可选择地，所述进风口位于靠近所述本体底部的位置。
可选择地，还包括遮阳结构，位于所述本体前端的迎风面上，所述遮阳结构位于所述第一工作单元的正上方。
可选择地，所述第一散热器直接连接在所述第一工作单元的发热部位，或者所述第一散热器通过热管与所述第一工作单元的发热部位连接。
可选择地，所述出风口位于所述本体的顶部、两侧或后部。
可选择地，在所述风道内还设有第二散热器，所述第二散热器通过热管与第二工作单元连接，所述第二工作单元位于所述本体内。
实施本实用新型的技术方案，具有如下有益效果：
本实用新型提供的割草机，在壳体内设置风道，并将进风口设置在前方，利用割草机工作过程中向前行走时迎风面与空气接触，迫使空气通过进风口进入风道内，并穿过摄像头的散热器，将散热器上的热量带走，从而实现对摄像头散热的作用，能够延长整个割草机的工作时间，特别是在高温天气中的工作时间；
其中的风道利用割草机行走产生的气流，不使用风扇等动力装置，也就不 会消耗能量，并且将进风口设置在前方，还可以从一定程度上降低了风阻，能够延长割草机的工作时间；
在需要的时候，割草机内其他结构(例如电机、电池等)工作产生的热量，也可以通过风道进行散热，从而延长割草机的工作时间。
附图说明
图1是本实施例提供的割草机的一种结构示意图。
图2是本实施例提供的割草机的另一种结构示意图，图中所示为多个进风口。
图中的附图标记：
10-本体；11-上壳体；12-底座；13-风道；14-摄像头；15-散热器；16-驱动轮；17-转向轮；18-遮阳结构；
121-斜面；131-进风口；132-出风口。
具体实施方式
为使本实用新型的上述目的、特征和优点能够更加明显易懂，下面结合附图对本实用新型的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本实用新型。但是本实用新型能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本实用新型内涵的情况下做类似改进，因此本实用新型不受下面公开的具体实施例的限制。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。本文所使用的术语“上方”、“下方”，不仅包括空间上竖直方向正对应的上下方关系，还包括空间上非竖直方向对应的上下方关系；本文所使用的术语“正上方”、“正下方”，是空间上竖直方向正对应的上下方关系，不包括非竖直方向对应的上下方关系。
除非另有定义，本文所使用的所有的技术和科学术语与属于本实用新型的 技术领域的技术人员通常理解的含义相同。本文中在本实用新型的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本实用新型。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1所示，本实施例提供一种割草机，该割草机可以是智能割草机，通过视觉传感器或者摄像头识别前方草坪的高度，从而判断是否需要继续前进或者转向修剪，下面以使用摄像头的方式为例进行说明：该智能割草机包括本体10和摄像头14，摄像头14置于本体10的前端，用于实时拍摄智能割草机前方的草坪图像，由于在摄像头14工作过程中会发热，特别是气温较高的时候发热更多，所以通常需要在摄像头14的发热部位设置散热器15。如何将摄像头产生的热量传导出去，从而降低摄像头14的温度，避免因摄像头过热而带来的停机，是本实用新型所要解决的技术问题。
在本实施例中，通过设计一个能够随着智能割草机的前进而将气流导入的风道13，并将散热器15的冷端置于风道13内，可以实现不需要风扇等动力驱动气流即可实现对散热器15及摄像头14降温的目的，从而解决了摄像头14工作过程温度过高的问题。
具体地，将风道13的进风口131设置在智能割草机本体10前端的迎风面上，出风口132设置在摄像头14后方的智能割草机本体10上，其可以是顶部、侧部，也可以是后端；将摄像头14的散热器15置于风道13内，使气流通过进风口131进入到风道13中之后，能够吹到散热器15的翅片从而对散热器15的翅片降温，由于散热器15与摄像头14之间能够进行换热，进而使摄像头14的温度降低。
本实施例中风道13的进风口131和出风口132采用一前一后的布置方式，气流只需要随着智能割草机的前进而自动沿着风道13相对运动，并通过设置在后方的出风口132流出，在此过程中风道13内部也不需要设计风扇来驱动气流，从而不需要增加设计成本、不消耗额外的电能；同时，进风口131和出风口132的一前一后的布置方式，使得智能割草机在前进的过程中，智能割草机本体10 迎风面的气流自然进入到进风口131中，减小了迎风面积，降低了风阻，使电机在带动驱动轮16前进的过程中消耗更少的电力，从而能够起到节能的效果。
本实施例中的摄像头14也可以采用视觉传感器，并且并不限于摄像头和视觉传感器，也可以通过风道13对其他发热元器件进行降温处理。智能割草机工作过程中其他的发热元器件也可以通过与风道13中的散热器15连接，从而实现对其降温。
当使用摄像头14或者视觉传感器时，为了避免阳光曝晒导致摄像头14或视觉传感器温度进一步升高，在本体10上设置遮阳结构18，遮阳结构18向前凸出于本体设置，使其下方形成了遮挡空间，将摄像头14置于遮阳结构18形成的遮挡空间，从而在炎热的夏天可以使摄像头14置于阴凉处，避免摄像头14被阳光曝晒，并且减少了摄像头接收的紫外线照射，从而可以防止因阳光曝晒导致的升温，也减少了紫外线照射导致的摄像头老化，能够延长摄像头的工作时间和使用寿命。
本实施例提供的割草机，在本体10内设置风道13，并将进风口131设置在割草机前方的迎风面上，利用割草机工作过程中向前行走时迎风面与空气接触，迫使空气通过进风口进入风道内，并穿过摄像头的散热器，将散热器上的热量带走，从而实现对摄像头散热的作用，能够延长整个割草机的工作时间，特别是在高温天气中的工作时间。
在实施过程中，进风口131的大小关系到进入风道13中的气流的大小，从而为了获得更大的流通量，可以增大进风口131的尺寸；流经散热器15的气流流速关系到散热器15的散热效率，即流速越高，则散热器15的散热效果越好，而在流量恒定的情况下，截面面积越小则流速越高。所以为了使散热器15获得更好的散热效果，可以将进风口131的面积设计为大于散热器15位置的风道13的截面面积，从而一方面通过进风口131获得更大的气流流量，另一方面可以使风道13内的气流流经散热器15时具有更高的流速。而通过将进风口131和散热器位置的风道13的截面面积的设计，可以实现对气流流速的放大效果。因为在等截面的理想状态下，进风口131和流经散热器15的气流的流速，等于智能割草机前进的速度，但实际工作过程中，由于风道13内部结构设计，流经散 热器15的气流流速通常低于智能割草机前进的速度，所以客观上存在着散热效率低的问题。通过将进风口131的面积设计为大于散热器15位置的风道13的截面面积，可以实现对气流流速放大的作用，使流经散热器15的气流流速大于智能割草机前进的速度，从而也使得散热器15得到更好的散热效果，进而使摄像头、视觉传感器以及其他可能与散热器15连接的发热单元的降温效果更明显。
如图2所示，进风口131也可以设置为多个，此时可以避免单个进风口尺寸过大影响美观及结构稳定的问题。多个进风口131可以是并排布置，也可以是分散布置。当设置多个进风口131时，全部进风口131的面积之和大于散热器15位置的风道13的截面面积。基于上述实施例的原理介绍，可以知道这样设计的作用与上述实施例的作用相同，也是为了获得更大的气流流量的同时得到更大的气流流速，从而对散热器15的散热效果更好，也就能够给摄像头、视觉传感器以及其他可能与散热器15连接的发热单元带来更显著的降温效果。
智能割草机的摄像头或视觉传感器通常布置在本体10前端靠近顶部的位置，相应地，进风口131位于摄像头14或视觉传感器的下方，从而可以使进风口131更接近草坪。在炎热天气中，由于植物的光合作用吸收热量，加上水蒸气蒸发的吸热作用，导致草坪附近的空气温度会低于甚至远低于空中的空气温度，本实施例中将进风口131设置的距离草坪更近，进风口131能够获得温度更低的气体，使气流与散热器15之间的温差更大，从而使气流对散热器的散热效率更好，也就使得与散热器15连接换热的摄像头14或视觉传感器的温度更低，使它们能够在高温天气下可以正常工作。
在一种可选择的实施方式中，本体10内设有充电电池，此时可以将充电电池的充电接口设置于本体10前端的迎风面上；对应地，进风口131与充电接口的上部连通，利用充电接口作为进风口131或者作为进风口131的一部分，可以进一步优化智能割草机产品结构布局。
在另一种可选择的实施方式中，本体10内设置有可更换的电池包，当电池包的电能耗尽时，只要更换新的满电的电池包即可让智能割草机继续工作。
在一种可选择的实施方式中，智能割草机的本体10包括底座12和上壳体11，上壳体11与底座12上下对接，将智能割草机的电池、摄像头等主要结构 单元固定于其中。摄像头14位于上壳体11上，进风口131可以选择地位于上壳体11，或者进风口131位于上壳体11和底座12之间的对接处，或者进风口131位于底座12上。通常会将风道13的大部分设置于上壳体11中，但实际应用时，本领域技术人员也可以将大部分甚至全部风道13设置于底座中。基于本领域技术人员可知，上壳体11和底座12之间的整体尺寸、比例关系都可以适应性的调整，所以无论二者之间的尺寸、比例关系如何，将进风口131的位置设置在靠近草坪的区域都会使进风口获得更低温度的气流，从而能够提供更好的降温效果，可以在高温天气中延长整个智能割草机的工作时间。
在一种可选择的实施方式中，当进风口131位于上壳体11和底座12之间时，底座12上具有向上倾斜的斜面121。此时，靠近进气口131的风道13呈向上或者倾斜向上的走向布置，所以通过斜面121的设置，可以引导气流更容易进入到进气口131中。
在一种可选择的实施方式中，散热器15除了可以如上述实施例中直接连接到摄像头14的发热部位，还可以选择地通过热管连接到摄像头14的发热部位。通过热管连接的方式，可以调整摄像头14和散热器15之间的距离，从而可以调整散热器15在风道13中的位置或姿态，从而使散热器15能够更有效地与风道13的走向及气流的流向结合，得到更好的散热效果。
在一种可选择的实施方式中，在风道内还设有第二散热器，第二散热器通过热管与电池或电机连接，电池或电机位于本体内。也就是说，风道中可以安装两个以上的散热器，能够对智能割草机内的多个不同发热部位或发热元件进行散热，从而进一步确保智能割草机在高温天气环境下的正常工作。两个散热器通常按照先后顺序布置在风道中，以满足不同的发热部件对温度要求的不同；但也可以采用并排的方式布置在风道中。两个散热器的结构可以相同，也可以不同。
在一种可选择的实施方式中，风道13可以是水平布置，也可以采用向上布置，或者可以采用如图1-2所示的向上布置和水平布置结合的方式，先倾斜向上然后再水平向后延伸。
基于本实用新型的实施例，本领域技术人员可知，智能割草机还需要包括 割刀、行走机构、保护机构、控制系统等必要的结构或单元。
实施本实用新型的技术方案，具有如下有益效果：
本实用新型提供的割草机，在壳体内设置风道，并将进风口设置在前方，利用割草机工作过程中向前行走时迎风面与空气接触，迫使空气通过进风口进入风道内，并穿过摄像头的散热器，将散热器上的热量带走，从而实现对摄像头散热的作用，能够延长整个割草机的工作时间，特别是在高温天气中的工作时间；
其中的风道利用割草机行走产生的气流，不使用风扇等动力装置，也就不会消耗能量，并且将进风口设置在前方，还可以从一定程度上降低了风阻，能够延长割草机的工作时间；
在需要的时候，割草机内其他结构(例如电机、电池等)工作产生的热量，也可以通过风道进行散热，从而延长割草机的工作时间。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本实用新型的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。因此，本实用新型专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种割草机，包括本体和第一工作单元，所述第一工作单元置于所述本体内，并且所述第一工作单元在通电工作后发热，其特征在于，在所述本体内设有风道，其中所述风道的进风口设置在所述本体前端的迎风面上，出风口设置在所述进风口后方的本体上，在所述风道内设有第一散热器，所述第一散热器与所述第一工作单元的发热部位连接。
  2. 根据权利要求1所述的割草机，其特征在于，
    所述进风口的面积大于所述第一散热器位置的所述风道的截面面积。
  3. 根据权利要求2所述的割草机，其特征在于，
    所述进风口设有多个，并且多个所述进风口的总面积大于所述第一散热器位置的所述风道的截面面积。
  4. 根据权利要求1所述的割草机，其特征在于，
    所述第一工作单元为摄像头或视觉传感器，位于所述进风口的上方。
  5. 根据权利要求4所述的割草机，其特征在于，
    所述本体内设有充电电池，并且所述充电电池的充电接口位于所述本体前端的迎风面上；对应地，所述进风口与所述充电接口的上部连通。
  6. 根据权利要求4或5所述的割草机，其特征在于，
    所述本体包括底座和上壳体，其中所述第一工作单元位于上壳体上，所述进风口位于所述上壳体，或者所述进风口位于所述上壳体和所述底座之间，或者所述进风口位于所述底座上。
  7. 根据权利要求6所述的割草机，其特征在于，
    当所述进风口位于所述上壳体和所述底座之间时，所述底座上具有向上倾斜的斜面。
  8. 根据权利要求4所述的割草机，其特征在于，
    所述进风口位于靠近所述本体底部的位置。
  9. 根据权利要求4所述的割草机，其特征在于，
    还包括遮阳结构，位于所述本体前端的迎风面上，所述遮阳结构位于所述第一工作单元的正上方。
  10. 根据权利要求1所述的割草机，其特征在于，
    所述第一散热器直接连接在所述第一工作单元的发热部位，或者所述第一散热器通过热管与所述第一工作单元的发热部位连接；
    和/或，所述出风口位于所述本体的顶部、两侧或后部；
    和/或，在所述风道内还设有第二散热器，所述第二散热器与第二工作单元连接，所述第二工作单元位于所述本体内。
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