CN210832564U

CN210832564U - Shell and water heater

Info

Publication number: CN210832564U
Application number: CN201921583609.0U
Authority: CN
Inventors: 王志昂; 何雨涛; 李忠堂; 林玉绵
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-06-23
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a casing, water heater. The shell comprises a shell body, wherein the shell body covers the outer side of the noise generation part to attenuate noise emitted by the noise generation part, and the shell body is made of inorganic fibers. According to the utility model discloses a casing, water heater, shell simple structure is compact, can effectively attenuate the noise and produce the noise that the part sent, promotes user's use and experiences.

Description

Shell and water heater

Technical Field

The utility model belongs to the technical field of the noise control, concretely relates to casing, water heater.

Background

The existing gas water heater has the maximum noise of 90dB and has larger ignition, flameout and combustion noises. Moreover, most of the machines are indoor-mounted machines, which greatly affects the use of users. Especially in quiet environment, the noise of the ignition needle and the valve opening sound of the gas proportional valve and the stop valve are particularly prominent, the high-frequency high-tone noise also has certain influence on the hearing health of a human body and can cause anxiety of a user, and similarly, the flame noise in the combustion process is accompanied with the whole use process, so that the user experience is seriously influenced. In the existing patent technology, there are some patents related to noise reduction of water heaters, but noise reduction pieces similar to noise reduction baffles and noise reduction sponges are added on a noise propagation path, and the noise reduction pieces need to be adhered inside the water heater, so that the process is relatively complex, and the noise reduction effect is poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model is to provide a casing, water heater, shell simple structure is compact, can effectively attenuate the noise that the noise production part sent, promotes the user and uses experience.

In order to solve the above problem, the utility model provides a casing, including the shell body, the shell body cover is located the outside that the noise produced the part, with the decay the noise that the part sent takes place for the noise, the material of shell body is inorganic fiber.

Preferably, the pore diameter in the inorganic fiber is phi, and 20 mu m is less than or equal to phi and less than or equal to 30 mu m.

Preferably, the side of the casing body facing the noise generating part is further provided with a plurality of raised ribs extending toward the side of the noise generating part.

Preferably, any plane perpendicular to the length direction of the raised rib is a first plane, on which the cross section of the raised rib is a half ellipse, and the major diameter of the ellipse is positioned on the shell body; and/or the raised ribs have a hollow structure.

Preferably, on the first plane, the intersection of the outer side of the raised rib and the shell body is in a circular arc structure; and/or the long diameter dimension of the raised ribs is 1.72 times the short diameter dimension; and/or, when the raised rib has a hollow structure, the wall thickness of the raised rib is 1 mm.

Preferably, the plurality of raised ribs are arranged in parallel at equal intervals, the interval between any two raised ribs is d, the maximum curvature of the raised ribs is k, and d is 1.1 k.

Preferably, the raised ribs are configured with a plurality of helmholtz resonator cavities.

Preferably, the cavity aperture of the Helmholtz resonant cavity is D, and D is more than or equal to 0.5mm and less than or equal to 5 mm.

The utility model also provides a water heater, including foretell casing.

The utility model provides a pair of casing, water heater adopt the inorganic fiber to form the casing, and no longer adopt the mode of the cotton or other amortization plates of sound is inhaled to the adhesion in current sheet metal construction's the shell, greatly simplified shell structure and assembly process, more importantly, because inorganic fiber has the spatial network structure of certain intensity and toughness, can effectively realize effective decay to the noise that the noise emergence part sent more, and simultaneously, this kind of inorganic fiber material's casing still has good thermal insulation performance and condensation prevention, anti-wind erosion, does not waft, functions such as bonding strength are strong, can effectively protect the body surface not receive corrosive gas and humid gas's erosion, prevents the metal structure corrosion such as panel beating in the current structure.

Drawings

Fig. 1 is a schematic structural diagram of a housing according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a flowchart of a noise reduction control method for a water heater according to another embodiment of the present invention.

The reference numerals are represented as:

1. a housing body; 11. bulging ribs; 12. a Helmholtz resonant cavity; 13. and (3) a hollow structure.

Detailed Description

Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, there is provided a casing, especially a water heater casing, including a casing body 1, the casing body 1 covers an outer side of a noise generating component (such as a fire grate, a gas valve, etc. capable of generating noise) to attenuate noise generated by the noise generating component, the casing body 1 is made of inorganic fiber, and the inorganic fiber may be, for example, common glass fiber, quartz glass fiber, boron fiber, ceramic fiber, etc. In this technical scheme, adopt inorganic fiber to form the casing, and no longer adopt the mode of the cotton or other amortization plates of sound is inhaled in the adhesion in the shell of current sheet metal construction, greatly simplified shell structure and assembly process, more importantly, because inorganic fiber has the three-dimensional network structure of certain intensity and toughness, can effectively realize effective decay to the noise that the noise emergence part sent more, and simultaneously, this kind of inorganic fiber material's casing still has good thermal insulation performance and condensation prevention, anti-wind erosion, does not waft to spill, functions such as adhesion strength are strong, can effectively protect the erosion that body surface is not corroded gas and humid gas, prevents metal structure corrosion such as the panel beating among the current structure.

As a specific embodiment, it is preferable that the pore size in the inorganic fiber is phi, 20 μm phi less than 30 μm, that is, the pore size of the three-dimensional network structure is limited to the aforementioned orientation, which can limit the frequency of the housing absorbing noise within a reasonable range.

In order to further promote the attenuation effect of the casing to the noise, preferably, the casing body 1 is towards one side of the noise generating part is also provided with a plurality of protruding ribs 11, the plurality of protruding ribs 11 extend towards one side of the noise generating part, and the noise is effectively reflected in the inside of the casing body 1 in a manner of arranging the plurality of protruding ribs 11, that is, the noise in the casing is attenuated in a reflection manner. Preferably, any plane perpendicular to the length direction of the raised rib 11 is a first plane, on which the cross section of the raised rib 11 is a half ellipse, and the major diameter of the ellipse is on the shell body 1; and/or the raised rib 11 has a hollow structure 13.

As shown in fig. 2, on the first plane, the intersection between the outer side of the raised rib 11 and the housing body 1 is a circular arc structure, which on one hand can make the stress strain of the intersection region between the raised rib 11 and the housing body 1 smaller, and at the same time can retroreflect sound waves, increasing the probability of wave form elimination, and preferably, the circular arc structure is tangent to both the raised rib 11 and the housing body 1; and/or the long diameter dimension of the raised ribs 11 is 1.72 times of the short diameter dimension; and/or, when the raised rib 11 has the hollow structure 13, the wall thickness of the raised rib 11 is 1mm, so that the raised rib 11 has enough strength, and the overall quality of the shell can be further reduced.

Preferably, the plurality of the raised ribs 11 are arranged in parallel at equal intervals, the interval between any two raised ribs 11 is d, the maximum curvature of the raised ribs 11 is k, and d is 1.1 k.

Preferably, the bump ribs are configured with a plurality of helmholtz resonators 12, and the noise can be further eliminated by resonance attenuation through the plurality of helmholtz resonators 12; furthermore, the cavity aperture of the Helmholtz resonant cavity 12 is D, and D is more than or equal to 0.5mm and less than or equal to 5 mm.

According to the embodiment of the utility model, still provide a water heater, especially a gas heater, including foretell casing.

As in the technical background of the present invention, noise reduction to a water heater in the prior art is mostly passive noise reduction, and the passive noise reduction effect is not very ideal, therefore, according to the present invention, a noise reduction control method for a water heater is further provided, the water heater includes a noise generating component and a cover disposed on a housing outside the noise generating component, the control method includes the following steps:

acquiring a first real-time frequency of the noise in the space outside the housing, where the first real-time frequency may be, for example, a specific frequency point value (e.g., 100Hz) or a frequency range (e.g., 80Hz-120Hz), which can be detected by a commercially available noise sensor, which is disposed at a certain position outside the housing (e.g., a position 3m away from the noise generating component) in a specific application; when the first real-time frequency is detected and obtained, determining whether the first real-time frequency is in a noise reduction preset frequency band of the housing, it can be understood that a specific value range of the noise reduction preset frequency band of the housing is related to a specific structural type of the housing, for example, the selection of the cavity aperture of the helmholtz resonant cavity 12 in the housing and the selection of the aperture of the inorganic fiber are related to the noise reduction preset frequency band, that is, the preset frequency band is considered as a preset value, and can be set to specifically eliminate noise sound waves with higher frequencies, for example, it can be assumed to be 120Hz-600 Hz; when the first real-time frequency is not in the noise reduction preset frequency range, adjusting the vibration frequency of the noise generating component to make the adjusted vibration frequency be in the noise reduction preset frequency range, for example, the aforementioned 100Hz is not in the range of 120Hz to 600Hz, at this time, the vibration frequency of the noise generating component should be adjusted to ensure that the adjusted vibration frequency is between 90Hz and 600Hz, for example, to be 100Hz, and it can be understood that when the first real-time frequency is in the noise reduction preset frequency range, no adjustment is made to the control parameter of the noise generating component.

Further, adjusting the vibration frequency of the noise generating part includes: when the noise generating part comprises a pulse igniter, reducing or increasing the breakdown voltage of the pulse igniter so as to reduce or increase the ignition frequency of the pulse igniter; and/or, decreasing or increasing the current of the pulse igniter to decrease or increase the ignition frequency of the pulse igniter.

Alternatively, adjusting the vibration frequency of the noise generating part includes: when the noise generating component comprises a combustor, reducing or increasing the secondary pressure of the gas in front of a gas distributing rod nozzle of the combustor (for example, adjusting the valve core opening degree of a muffled gas pressure valve) or the gas flow (for example, adjusting the valve core opening degree of a muffled gas flow valve) so as to reduce or increase the gas combustion noise frequency of the pulse igniter.

Still alternatively, the adjusting the vibration frequency of the noise generating part may include: when the noise generating component comprises a combustor, a plurality of combustion fire rows of the combustor are ignited row by row, and/or the plurality of combustion fire rows of the combustor are extinguished row by row, namely, a plurality of rows of combustion fire rows are ignited or extinguished one by one in batches, namely, the on-off of stop valves connected with the combustion fire rows are controlled.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A shell is characterized by comprising a shell body (1), wherein the shell body (1) is covered on the outer side of a noise generating component to attenuate the noise generated by the noise generating component, and the shell body (1) is made of inorganic fibers; the shell body (1) faces one side of the noise generation component and is further provided with a plurality of protruding ribs (11), and the protruding ribs (11) face one side of the noise generation component and extend.

2. The housing of claim 1, wherein the pores in the inorganic fibers have a diameter of phi, 20 μm or less and 30 μm or less.

3. The housing according to claim 1, wherein any plane perpendicular to the longitudinal direction of the ridge (11) is a first plane on which the cross section of the ridge (11) is a half ellipse, and the major diameter of the ellipse is on the housing body (1); and/or the raised rib (11) has a hollow structure (13).

4. The housing according to claim 3, characterized in that on the first plane, the intersection of the outer side of the raised rib (11) and the housing body (1) is of a circular arc structure; and/or the long diameter dimension of the raised ribs (11) is 1.72 times of the short diameter dimension; and/or, when the raised rib (11) has a hollow structure (13), the wall thickness of the raised rib (11) is 1 mm.

5. The housing according to claim 1, wherein a plurality of the raised ribs (11) are arranged in parallel at equal intervals, the interval between any two raised ribs (11) is d, the maximum curvature of the raised ribs (11) is k, and d is 1.1 k.

6. The housing according to any of claims 1 to 5, wherein a plurality of Helmholtz resonance cavities (12) are configured on the raised ribs.

7. The housing according to claim 6, wherein the Helmholtz resonator (12) has a cavity aperture D, 0.5mm ≦ D ≦ 5 mm.

8. A water heater comprising a housing, characterized in that the housing is as claimed in any one of claims 1 to 7.