KR20110052935A - Noise reduction range hood - Google Patents

Abstract

PURPOSE: A noise reduction range hood, which performs noise reduction function and air exhaustion function, is provided to maximize noise reduction effect regardless of the kind of a ventilation fan. CONSTITUTION: A noise reduction range hood comprises a flange(100), a body portion(200), an intermediate fixing plate(300), and an inlet intermediate sound absorption member(400). The flange is located on top of a flame port and blocks the air upwardly flowing from the flame port. The body portion is combined on the top of the flange. An inlet(210), inhaling the stagnant air, is formed on the bottom part of the body portion connected to the flange. An exhaust fan(220) is included on the top inner side of the body portion connected to the exhaust duct through which outside air passes. The inlet intermediate sound absorption member is inserted between the intermediate fixing plates.

Description

Noise hood with noise reduction function {Noise Reduction Range Hood}

The present invention relates to a stove hood having a noise reduction function, and more particularly, to install a sound absorbing material on the inner wall surface of the body constituting the stove hood and to form a wedge-shaped sound absorbing material so as to cross the center of the air inlet. It is a technology that realizes smooth discharge of air and noise reduction by installation.

Recently, as the desire to enjoy a pleasant quality of life has increased due to the improvement of living standards, the regulations are being extended to the noise of living. The range of noise of the range hood, which has been spread in domestic kitchens for many years, is also within this category and is still not free from complaints of noise.

In the case of the range hood, most of the noise performance satisfies the national standard (KS C 9304), but the standard does not meet the needs of consumers, and many users do not operate the range hood due to the noise.

In the meantime, research / development for noise reduction of the range hood is directly related to noise reduction of the exhaust fan mounted on the range hood and indirectly when the exhaust fan is separated and installed at the end of the exhaust duct inside the ceiling where the range hood is exhausted. Etc.

The development of the exhaust fan itself, which is applied to the range hood, has a sufficient exhaust air volume due to structural constraints that require a large amount of exhaust air volume compared to the fan size with the majority of the fan blades having a diameter of 100 to 200 mm. In rare cases, an exhaust fan is used to secure superior performance in terms of reduction.

In addition, recently there is a case that the technology is applied to reduce the noise by separating the fan from the user by removing the hood hood exhaust fan installed at the end of the exhaust duct leading the exhaust to the outside. This structure is relatively expensive, the application is limited depending on the site structure, and there are many inconveniences in terms of inspection, so the application is insignificant.

Range hoods are quiet and their ultimate goal is to produce good smells, vapors and vapors during cooking. However, in the process of producing high exhaust air volume, it is still accompanied by noise, and depending on the structure of the range hood, even the same fan cannot guarantee the noise performance.

The present invention, which was created to solve the above problems, effectively installs a sound absorbing material in the range of the hood to maintain exhaust performance and at the same time significantly reduce noise.

Technical composition of the present invention created to achieve the above object is as follows.

The present invention is located on top of the crater and the flange 100 to block the air rising from the crater 100; It is coupled to the upper portion of the flange 100, the lower end connected to the flange 100 is provided with a suction port 210 for sucking the stagnant air, the exhaust fan (inside the upper end connected to the exhaust duct communicating with the outside air) Body portion 200 is provided; An intermediate fixing plate 300 provided to be spaced up and down inside the suction port 210 and installed to cross the body part 200 to bisect a passage of air introduced into the suction port 210; And a suction port intermediate sound absorbing material 400 inserted and fixed between the intermediate fixing plates 300.

Technical effects of the configuration of the present invention are as follows.

First, it is possible to maximize the noise reduction effect regardless of the type of exhaust fan by applying a sound absorbing material inside the range hood.

Second, the noise is transmitted to the outside through the inlet 210 by installing the suction inlet middle sound absorbing material 400 for dividing the inlet 210 of the range hood and the suction inlet side sound absorbing material 600 on both sides of the inlet middle absorbing material 400. Can be dramatically reduced.

Third, the middle fixing plate 300 fixing the inlet side sound absorbing material 600 has a wedge shape protruding upward and downward, respectively, and the side fixing plate 500 fixing the inlet side sound absorbing material 600 is installed to form an inclined air passage. Gradually decreases and then remains constant and then gradually increases to be connected to the exhaust fan 220, thereby minimizing the effect of the sound absorbing material on the air intake and flow, thereby providing an exhaust performance equivalent to that when the sound absorbing material is not provided. I can keep it.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a specific embodiment of the present invention, and FIG. 2 is a sectional front view of a specific embodiment of the present invention.

The flange 100 is located in the upper portion of the crater as shown in Figures 1 and 2 serves to block the air rises from the crater.

Body portion 200 is coupled to the upper portion of the flange 100, the lower end connected to the flange 100 is provided with a suction port 210 for sucking the stagnant air.

An upper end of the body part 200 is connected to an exhaust duct communicating with the outside air, and an exhaust fan 220 is provided inside the upper end of the body part 200 to generate a suction force for sucking the air rising from the crater.

The middle fixing plate 300 is provided to be spaced up and down inside the inlet 210, and is installed to cross the body 200 to divide the passage of air introduced into the inlet 210.

That is, the middle fixing plate 300 is composed of two parts, as shown in Figure 1 or 2, the lower portion of the middle fixing plate 300 is in the form of a wedge with a central portion protruding downward, the middle fixing plate 300 Located at the top of the center is a wedge shape with the center protruding upward.

The suction port middle sound absorbing material 400 is inserted between the middle fixing plate 300 is fixed to serve to reduce the noise, the upper and lower end forms to form a wedge shape to correspond to the wedge shape of the middle fixing plate 300 and the body portion ( 200) is installed to cross the inside.

The inlet side sound absorbing material 600 is installed inside the left and right side walls of the body portion 200, respectively, and is installed in a direction parallel to the inlet middle sound absorbing material 400 and has a trapezoidal cross section.

The side fixing plate 500 is provided to be inclined to protrude in a form corresponding to the inlet side sound absorbing material 600 to support the upper and lower portions of the inlet side sound absorbing material 600 to gradually reduce the passage of air that rises with the middle fixing plate 300. It is kept constant and then gradually increases again.

The fan check ball 240 is provided to be opened and closed on the front of the body portion 200, the fan check ball sound absorbing material 230 is also provided on the inner surface of the fan check ball 240.

In addition, as shown in FIG. 1, the body inner sound absorbing material 250 is provided on the inner surface of each of the lower front, rear, left and right sides, and the upper surface of the body part 200.

The inlet middle sound absorbing material 400, the suction inlet side sound absorbing material 600, the fan check ball sound absorbing material 230, and the body inner sound absorbing material 250 may be used, such as melamine foam, polyurethane foam, glass fiber, polyurethane foam or glass In the case of fiber, the noise performance is excellent, but in the case of glass fiber, it is preferable to exclude the use in consideration of safety. In a specific embodiment of the present invention, a sound absorbing material made of porous polyurethane foam was used.

In addition, it is preferable to attach the PVC film to the surface of the porous polyurethane foam so that rising water vapor or oil vapor is not adsorbed on the surface of the polyurethane foam.

Figure 3 is a perspective view showing the appearance of the fan applied to a specific embodiment of the present invention, Figure 4 to Figure 7 is a graph showing the air volume and noise according to such a fan, the air volume performance when the sound absorbing material is used according to each fan Although there is no significant difference within the margin of error, it can be seen that noise reduction has a significant effect.

Although the technical spirit of the present invention has been described with reference to specific embodiments of the present invention as described above, the scope of protection of the present invention is not necessarily limited to these embodiments, and various designs may be made without changing the technical spirit of the present invention. Changes, additions or deletions of well-known technology, and simple numerical limitations also make it clear that they belong to the protection scope of the present invention.

1 is an exploded perspective view of a specific embodiment of the present invention.

2 is a sectional front view of a specific embodiment of the present invention.

Figure 3 is a perspective view showing the appearance of the fans applied to a specific embodiment of the present invention.

FIG. 4 is a graph showing the air volume and noise when the fan 1 shown in FIG. 3 is used.

FIG. 5 is a graph showing the air volume and the noise when the fan 2 shown in FIG. 3 is used.

FIG. 6 is a graph showing the air volume and the noise when the fan 3 shown in FIG. 3 is used.

FIG. 7 is a graph showing the air volume and the noise when the fan 4 shown in FIG. 3 is used.

<Description of the symbols for the main parts of the drawings>

100: flange

200: body part

210; suction port

220: exhaust fan

230: fan check sound absorbing material 240: fan check ball

250: internal sound absorbing material

300: middle fixed version

400: intake middle sound absorbing material

500: side fixing plate

600: intake side sound absorbing material

Claims (5)

It relates to a range hood equipped with a noise reduction function, A flange 100 positioned at an upper portion of the crater and stagnating by blocking air rising from the crater; It is coupled to the upper portion of the flange 100, the lower end connected to the flange 100 is provided with a suction port 210 for sucking the stagnant air, the exhaust fan (inside the upper end connected to the exhaust duct communicating with the outside air) Body portion 200 is provided; An intermediate fixing plate 300 provided to be spaced up and down inside the suction port 210 and installed to cross the body part 200 to bisect a passage of air introduced into the suction port 210; And, A suction port intermediate sound absorbing material 400 inserted and fixed between the intermediate fixing plates 300; Range hood with a noise reduction function characterized in that comprising a. In claim 1, The lower portion of the middle fixing plate 300 is in the form of a wedge protruding downward from the center, Located in the middle of the middle fixing plate 300 is a wedge shape protruding upward from the center, Inside the left and right side walls of the body portion 200, A suction port side sound absorbing material 600 of a trapezoidal cross section installed in a direction parallel to the suction port middle sound absorbing material 400; And, A side fixing plate 500 inclined to protrude in a form corresponding to the inlet side sound absorbing material 600 to support the upper and lower portions of the inlet side sound absorbing material 600; Range hood with a noise reduction function, characterized in that gradually decreases and then increases gradually again after maintaining a constant. 3. The method of claim 2, A fan check opening 240 that can be opened and closed on the front upper portion of the body portion 200; And, A fan check ball sound absorbing material 230 attached to an inner surface of the fan check ball 240; Range hood with a noise reduction function characterized in that it is provided. 4. The method of claim 3, Body inner sound absorbing material (250) in the inner surface of each of the front lower, rear, left and right sides, and the upper surface of the body portion 200; Range hood with a noise reduction function characterized in that it is provided. In claim 4, The suction port intermediate sound absorbing material 400, the suction port side sound absorbing material 600, the fan check ball sound absorbing material 230, and the body inner sound absorbing material 250 is characterized in that the porous polyurethane foam with a film of PVC material Range hood with reduction function.

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