Rear shell plate of gas water heater

Abstract

The utility model relates to a rear shell plate of a gas water heater, which is characterized in that an air inlet grille is arranged on the back of the rear shell plate, a cover body is arranged on the back of the rear shell plate to cover the air inlet grille, an air inlet duct is enclosed by the cover body and the back of the rear shell plate, and the bottom of the cover body is of an open structure and forms an air inlet of the air inlet duct. An air guide plate and an air inducing plate are arranged on the inner side of the cover body and located on the path of the air inlet duct, the air guide plate and the air inducing plate are arranged in a front-back spaced mode, the air guide plate is obliquely arranged, an air passing opening is formed in the bottom of the air guide plate and corresponds to the bottom of the air inducing plate, and an arc-shaped air inducing face is arranged between the bottom and the top of the air inducing plate. An air passing gap is formed between the top of the air inducing plate and the back face of the rear shell plate. The cover body is arranged on the back face of the rear shell plate and aims at the air inlet grille, the cover body can weaken noise of the strong exhaust fan from spreading outwards from the air inlet grille, the air guide plate and the air inducing plate are arranged in the cover body to guide input air, noise spreading is further blocked and weakened, and therefore the purpose of reducing noise is achieved.

Description

Technical Field

[0001] The utility model relates to a rear shell plate of a gas water heater. Background Art

[0002] At present, when the gas water heaters on the market are working, when there is incomplete combustion, carbon monoxide will be produced, which poses a threat to the safety of shower users. For this reason, someone has developed a forced exhaust gas water heater, which mainly uses a forced exhaust fan to discharge the smoke produced by combustion to the outside to avoid carbon monoxide poisoning of shower users. However, due to the design of the forced exhaust fan, it will generate a lot of noise when working, which will affect the life of users. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems. We provide a rear shell plate of a gas water heater. The rear shell plate is provided with a cover body which can block and reduce the sound from the inside of the gas water heater to the outside.

[0004] To achieve the above-mentioned purpose, the utility model provides a rear shell plate of a gas water heater, wherein an air inlet grille is provided on the back side of the rear shell plate, a cover body is provided on the back side of the rear shell plate to cover the air inlet grille, the cover body and the back side of the rear shell plate form an air inlet duct, the bottom of the cover body is an open structure and forms an air inlet of the air inlet duct, an air guide plate and an air induced draft plate are provided on the inner side of the cover body on the path of the air inlet duct, the air guide plate and the air induced draft plate are spaced apart from each other front and back, the air guide plate is inclined and an air outlet is provided at its bottom, the air outlet corresponds to the bottom of the air induced draft plate, an arc-shaped air induced surface is provided from the bottom to the top of the air induced draft plate, and an air outlet gap is provided from the top of the air induced draft plate to the back side of the rear shell plate.

[0005] In one or more embodiments, the air guide plate and the air induction plate are arranged near the air inlet.

[0006] In one or more embodiments, the air guide plate is tilted from inside to outside, and the tilt angle is 30 degrees to 45 degrees.

[0007] In one or more embodiments, the bottom of the air guide plate and the bottom of the air induction plate are fixed to the inner side surface of the cover body by welding.

[0008] In one or more embodiments, the air inlet grille is composed of a plurality of ventilation holes, and the ventilation holes are provided with an air guide eave along the upper edge to the lower edge thereof, and the air guide eave is a lower opening structure.

[0009] In one or more embodiments, the left and right sides and the top side of the cover body are provided with mounting flat edges that fit with the rear shell plate, and the back of the rear shell plate is provided with mounting slots for the mounting flat edges on the left and right sides of the cover body to be inserted, and the bottom of the mounting slots is a closed structure.

[0010] In one or more embodiments, the installation flat edge is formed by bending the outer edge of the cover body.

[0011] Compared with the background technology, the utility model has the following effects: a cover body is provided on the back side of the rear shell plate for the air inlet grille, the cover body itself can reduce the noise of the strong exhaust fan from being transmitted outward from the air inlet grille, and an air guide plate and an air induction plate are provided inside the cover body to guide the input air while further blocking and reducing the noise transmission, thereby achieving the purpose of reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the rear shell plate and the cover body of the embodiment of the utility model located at the air inlet duct;

[0013] Figure 2 This is a schematic diagram of the front structure of the rear shell plate of the embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the rear structure of the rear shell plate of an embodiment of the utility model. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] See attached Figure 1-3 The present application provides a rear shell plate of a gas water heater, wherein an air inlet grille 2 is provided on the back of the rear shell plate 1, and the air inlet grille is used to input fresh air from the outside. A cover body 3 is provided on the back of the rear shell plate 1 to cover the air inlet grille, and the cover body 3 and the back of the rear shell plate 1 form an air inlet duct 4, and the bottom of the cover body 3 is an open structure and forms an air inlet of the air inlet duct 4. An air guide plate 5 and an air induction plate 6 are provided on the inner side of the cover body 3 on the path of the air inlet duct, and the air guide plate 5 and the air induction plate 6 are arranged at intervals in front and behind, and the air guide plate 5 is inclined and has an air outlet 51 at its bottom. The air outlet corresponds to the bottom of the air induction plate, and an arc-shaped air induction surface 61 is provided between the bottom and the top of the air induction plate 6. An air gap 7 is provided between the top of the air induction plate 6 and the back of the rear shell plate 1. The outside air enters the air inlet duct 4 from the air inlet, and first passes through the air outlet 51 at the bottom of the air guide plate 5, and then passes through the air gap guided by the air induction plate, and finally enters the interior of the rear shell plate from the air inlet grille. The air guide plate and the air induction plate can guide the air to enter, and at the same time can block and weaken the noise propagation from the air inlet grille, thereby achieving the noise reduction effect.

[0017] The wind guide plate 5 and the air induction plate 6 are arranged near the air inlet. The wind guide plate 5 is inclined from the inside to the outside, and the inclination angle is 30 degrees to 45 degrees, preferably 35 degrees and 45 degrees. At this inclination angle, it can well block and reduce sound propagation, and can also play a better wind guiding role.

[0018] The bottom of the air guide plate 5 and the bottom of the air induction plate 6 are both fixed to the inner side of the cover body 3 by welding. The welded air guide plate and air induction plate have a stable structure and are not easy to loosen.

[0019] The air inlet grille is composed of a plurality of ventilation holes 8, and an air guide eave 9 is provided along the upper edge to the lower edge of the ventilation hole 8. The air guide eave is a downward opening structure, which can guide the air entering the rear shell plate and at the same time block the internal noise from being transmitted outward, thereby further reducing the noise.

[0020] The left and right sides and the top side of the cover body 3 are provided with installation flat edges 31 that fit with the rear shell plate 1. The back of the rear shell plate 1 is provided with installation slots 10 for the installation flat edges on the left and right sides of the cover body to be plugged in. The bottom of the installation slots 10 is a closed structure. The cover body is installed by plugging, which has the advantages of easy installation and disassembly. At the same time, the user can pull out the cover body upward without disassembling the gas water heater to clean the dust inside the cover body, and it is convenient for the early installation of the cover body and the later maintenance and replacement of the cover body. The installation flat edge 31 is formed by bending the outer edge of the cover body 3, specifically by punching and forming it in one piece by a punching machine, or by bending and forming it by a bending machine in the later stage.

[0021] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A rear shell plate of a gas water heater, Features: The back of the rear shell plate (1) is provided with an air inlet grille (2), the back of the rear shell plate (1) is provided with a cover body (3) covering the air inlet grille, the cover body (3) and the back of the rear shell plate (1) enclose an air inlet duct (4), the bottom of the cover body (3) is an open structure and forms an air inlet of the air inlet duct (4), the inner side of the cover body (3) is provided with an air guide plate (5) and an air induction plate (6) on the path of the air inlet duct, the air guide plate (5) and the air induction plate (6) are arranged at intervals in front and behind, the air guide plate (5) is inclined and has an air outlet (51) at its bottom, the air outlet corresponds to the bottom of the air induction plate, an arc-shaped air induction surface (61) is provided between the bottom and the top of the air induction plate (6), and an air outlet gap (7) is provided between the top of the air induction plate (6) and the back of the rear shell plate (1).

2. The rear shell plate of a gas water heater according to claim 1, Features: The air guide plate (5) and the air induction plate (6) are arranged at a position close to the air inlet.

3. The rear shell plate of a gas water heater according to claim 1, Features: The wind guide plate (5) is arranged to be inclined from the inside to the outside, and the inclination angle is 30 degrees to 45 degrees.

4. The rear shell plate of a gas water heater according to claim 1, Features: The bottom of the air guide plate (5) and the bottom of the air induction plate (6) are both fixed to the inner side surface of the cover body (3) by welding.

5. The rear shell plate of a gas water heater according to claim 1, Features: The air inlet grille is composed of a plurality of ventilation holes (8), and the ventilation holes (8) are provided with air guide eaves (9) along the upper edge to the lower edge thereof, and the air guide eaves are in a downward opening structure.

6. The rear shell plate of a gas water heater according to claim 1, Features: The left and right sides and the top side of the cover body (3) are provided with mounting flat edges (31) that fit with the rear shell plate (1), and the back side of the rear shell plate (1) is provided with mounting slots (10) for plugging the mounting flat edges on the left and right sides of the cover body, and the bottom of the mounting slots (10) is a closed structure.

7. The rear shell plate of a gas water heater according to claim 6, Features: The installation flat edge (31) is formed by bending the outer edge of the cover body (3).

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