At present, there are various brands and various types of range hoods at home and abroad (mainly based on domestic products). How to purchase a range hood with ideal performance and price to keep the indoor environment clean and comfortable is the concern of every consumer who plans to buy a range hood. Special attention should be paid to the following points when purchasing:
1. Mark: It includes two aspects: the logo of the range hood and the instruction manual. The name, trademark, rated voltage, rated input power and certification mark of the model, manufacturer or distributor should be marked on the range hood. If the range hood has an illumination bulb, the maximum power of the bulb used should also be indicated on or near the lamp holder. In addition, digital or text is used to mark the function of the control unit and switch of the range hood. At the same time, each range hood is equipped with a Chinese instruction manual to help consumers use it safely. In the specification, the minimum distance between the range hood and the support surface of the cooking utensils on the stove should be marked, the range hood should be directly baked, the surface of the hood casing, the impeller and the volute chamber (or the filter cover) should be marked. Detailed description of the cleaning cycle and method.
2. Structure: The structure design of the range hood should be easy to effectively remove the accumulated grease and dirt. The surface of the casing should be as smooth as possible. Usually, the range hood needs to be fixed on the wall, so in addition to the keys, holes, hooks, etc., it is required to have a suitable device to fix it to the wall, and the device should be difficult to move or deform. Made of metal.
3. Consumers should choose the appropriate range hood according to the size of their kitchen and the amount of soot. The European-style range hood has a beautiful appearance and fine manufacturing process, but it does not have a large-capacity collecting hood. It is suitable for modern kitchens with large space and not many fume; deep-type range hoods are beautiful in appearance, and other types of range hoods Compared with the machine, it generally has the advantage of large air volume, and the structure of the large-capacity collecting hood is advantageous for sucking and discharging soot, suitable for kitchens with more fume and large space; the thin range hood is light and beautiful in appearance and takes up little space. Suitable for small kitchens; sub-deep range hoods are available between thin and deep range hoods, suitable for kitchens with moderate space and fume. In addition, from the standpoint of environmental protection, the range hood with filter structure can filter the soot before the soot is discharged, so that the exhausted gas has less fumes and can reduce the environmental pollution of the discharged gas. . Also, the main unit of the split range hood (the main source of noise from the range hood, including the motor and the impeller) is placed outdoors, which can greatly reduce the noise in the kitchen and create a quieter kitchen. best choice.
4. Choose producers and operators with good after-sales service. Under normal circumstances, you should purchase well-known brands of range hoods. These enterprises have high-quality service teams, advanced production technology and production capacity, which not only can produce better quality range hood products, but also provide high-quality After-sales service, relieve the worries of using the range hood. As for those hand-assembled enterprises, the level of production technology is low, management is not good, product quality and after-sales service are difficult to guarantee.
5. In addition, consumers should choose range hood products according to their own consumption power, not the higher the price of the range hood products, the better the performance of the range hood. At the time of purchase, you can feel the leaking air around the range hood by hand. The air volume is not big. If there is no air leakage and the large air volume indicates that the range hood has strong ability to smoke, you can also directly feel the noise of the range hood. The size, especially the frontal noise, and the touch of the casing to see if the vibration, quiet, smooth running range hood is the user's first choice.
The structure of the core barrel is generally divided into single - acting double core tube and most of the fishing apparatus. The double tube section consists of an outer tube assembly and an inner tube assembly. The outer pipe assembly includes; The main structure and working principle of the cartridge stopper, cartridge chamber, stable joint outer pipe, diamond reamer and diamond bit are as follows:
(1) Spear structure is composed of spear head and recovery spring. When coring, the fishing device is lowered to the upper part of the inner tube assembly in the drill pipe, and the fishing hook grasps the fishing spear, lifts the fishing device up, picks up the recycling card barrel, and inwardly compressing the cartridge card, so that the inner tube assembly and the outer tube are separated, so that the inner tube assembly is lifted up.
(2) The clip structure is mainly composed of the clip frame, clip, spring and other components. Its function is that when the inner tube sits on the outer tube, the clip expands with the help of the elastic force of the expansion spring and sticks to the inner wall of the clip chamber, so that the drilling tool can achieve positioning.
(3) Buffer structure by spring, locking mother, split pin composition. Protecting the inner tube when pulling the core.
(4) Single action structure is realized by two pairs of thrust bearings.
(5) Adjust the length of the inner pipe assembly and the outer pipe assembly of the structure, and fine-tune the lower shaft and the locking mother to achieve the gap required by the end of the spring seat and the step inside the drill bit.
(6) The fishing structure, also known as the fishing device, is mainly composed of fishing hook, hammer and safety rope. The fishing hook is used to hold the spearhead while fishing the inner pipe, and the weight is used to speed up the fishing device's descent to save fishing time. The safety rope is a thin rope. When the inner pipe is stuck for some reason and cannot be lifted, the safety rope can be forcefully lifted and then the drill can be lifted.
Other Parts,Spearhead Base,Compression Spin,Core Lifter
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