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CN-122014648-A - Air supply structure and electric water heater

CN122014648ACN 122014648 ACN122014648 ACN 122014648ACN-122014648-A

Abstract

The invention belongs to the technical field of electric water heaters, and discloses an air supply structure and an electric water heater, wherein the air supply structure supports a wind wheel motor by a first supporting structure, clamps the wind wheel motor between a motor cover plate and the first supporting structure, supports a rotating piece connected with a cross-flow wind wheel by a second supporting structure, clamps the rotating piece between the wind wheel cover plate and the second supporting structure, so that one axial end of the cross-flow wind wheel is rotatably arranged between the wind wheel cover plate and the second supporting structure through the rotating piece, the first supporting structure and the second supporting structure limit the cross-flow wind wheel and the wind wheel motor in the axial direction, and the motor cover plate and the wind wheel cover plate limit the cross-flow wind wheel and the wind wheel motor in the radial direction, thereby effectively improving the stability of the cross-flow wind wheel in the rotating process, further reducing the noise generated by shaking of the cross-flow wind wheel and the wind wheel motor and reducing the noise in the working process of the air supply structure.

Inventors

  • CHEN XINGJUN
  • ZHAO MENG

Assignees

  • 广东万和电气有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (10)

  1. 1. Air supply structure, its characterized in that includes: The air supply device comprises an air supply shell (1), wherein a first supporting structure (14) and a second supporting structure (15) which are axially arranged at intervals are convexly arranged on the inner bottom wall of the air supply shell (1), the first supporting structure (14) is connected with a motor cover plate (17) positioned above the first supporting structure, and the second supporting structure (15) is connected with a wind wheel cover plate (16) positioned above the second supporting structure; the cross flow wind wheel (2), one end of the cross flow wind wheel (2) is connected with a rotating piece (6), and the rotating piece (6) is clamped between the wind wheel cover plate (16) and the second supporting structure (15) along the radial direction and the axial direction of the cross flow wind wheel (2); The wind wheel motor (3) is coaxially arranged with the cross-flow wind wheel (2), an output shaft of the wind wheel motor (3) is connected with the other end of the cross-flow wind wheel (2) to drive the cross-flow wind wheel (2) to rotate, and the wind wheel motor (3) is clamped between the motor cover plate (17) and the first supporting structure (14) along the radial direction and the axial direction of the cross-flow wind wheel (2).
  2. 2. The air supply structure according to claim 1, wherein the air supply housing (1) has an air supply channel (110), two ends of the air supply channel (110) are respectively formed with an air inlet (130) and an air outlet (140), a first volute tongue guide wall (1103) and a second volute tongue guide wall (1104) which extend along the circumferential direction of the through-flow wind wheel (2) are formed on the upper inner wall of the air supply channel (110), and the first volute tongue guide wall (1103) is positioned on one side of the second volute tongue guide wall (1104) close to the air inlet (130); The first volute tongue guide wall (1103) is an arc surface with the central axis distance R 1 between the first volute tongue guide wall and the cross-flow wind wheel (2), the distance between the second volute tongue guide wall (1104) and the central axis of the cross-flow wind wheel (2) is R 2 ,R 1 ＜R 2 , and R 2 gradually increases from the air outlet (140) to the air inlet (130).
  3. 3. The air supply structure according to claim 2, wherein an extending direction of the first volute tongue guide wall (1103) from one end to the other end of the first volute tongue guide wall (1104) along which the first volute tongue guide wall is connected is a rotation direction of the cross flow wind wheel (2); the cross flow wind wheel (2) comprises a wind wheel shaft (22) and a plurality of blades (21) which are sequentially arranged around the circumference of the wind wheel shaft (22), wherein two ends of each blade (21) respectively form a proximal end (221) and a distal end (222), and the proximal end (221) is closer to the wind wheel shaft (22) than the distal end (222); in any two adjacent blades (21) distributed along the rotation direction of the cross-flow wind wheel (2), the proximal end (221) of the downstream blade (21) is positioned between the proximal end (221) of the upstream blade (21) and the distal end (222) of the upstream blade (21).
  4. 4. The air supply structure according to claim 2, wherein a minimum radial gap between the second volute tongue guide wall (1104) and a maximum outer diameter of the through-flow wind wheel (2) is dmin, a maximum radial gap between the second volute tongue guide wall (1104) and the maximum outer diameter of the through-flow wind wheel (2) is dmax, and a ratio of dmax to dmin is less than or equal to 1.5.
  5. 5. The air supply structure according to claim 2, wherein a heating component (4) is arranged in the air supply channel (110), the heating component (4) is located downstream of the cross flow wind wheel (2) from the air inlet (130) to the air outlet (140), the air supply channel (110) located upstream of the cross flow wind wheel (2) forms an air inlet channel (1107), and the air supply channel (110) located downstream of the cross flow wind wheel (2) forms an air outlet channel; Two heat insulation plates (13) are arranged in the air supply shell (1) at intervals along the axial direction of the cross flow wind wheel (2), the two heat insulation plates (13) divide the inner cavity of the air supply shell (1) into two mounting cavities (120) which are directly communicated with the outside atmosphere, and an air supply channel (110) positioned between the two mounting cavities (120), and the two mounting cavities (120) are communicated with the air inlet channel (1107); The first support structure (14) is arranged in one of the mounting chambers (120), and the second support structure (15) is arranged in the other mounting chamber (120).
  6. 6. The air supply structure according to claim 5, wherein a waterproof sleeve (126) is disposed in the air supply channel (110), the waterproof sleeve (126) is located between the heating assembly (4) and the air inlet (130), the waterproof sleeve (126) penetrates through the air supply housing (1), and the waterproof sleeve (126) is used for a pipeline to penetrate through.
  7. 7. The air supply structure according to claim 5, further comprising a sterilization assembly (5), wherein a mounting end of the sterilization assembly (5) is disposed in the mounting chamber (120) and is mounted on the heat insulation board (13) forming the mounting chamber (120), a working end of the sterilization assembly (5) passes through the heat insulation board (13) and is then disposed in the air supply channel (110), and the sterilization assembly (5) is used for performing sterilization treatment on an air flow flowing in the air supply channel (110).
  8. 8. The air supply structure according to claim 5, wherein the air supply housing (1) includes a first air outlet wall (121) and a second air outlet wall (122) disposed opposite to each other for enclosing the air outlet (140); one end of the heating component (4) is clamped with the second air outlet wall (122), and the other end of the heating component (4) is connected with the first air outlet wall (121) through a fastener.
  9. 9. A blowing structure according to claim 8, characterized in that said heating assembly (4) comprises: a heating grid (41), wherein the heating grid (41) is provided with a mounting groove (414), and the outlet direction of the mounting groove (414) is opposite to the air outlet direction of the air outlet (140); A heating unit (42), the heating unit (42) being located within the mounting slot (414) and mounted to the heating grid (41); The temperature controller (43), temperature controller (43) install in heating grid (41) and one end stretch into in installation cavity (120), the other end inserts heating grid (41) and with heating unit (42) electricity is connected, temperature controller (43) are used for controlling heating unit (42) start-stop.
  10. 10. An electric water heater, characterized by comprising a water heater housing (91), and an air supply structure according to any one of claims 1 to 9, said air supply structure being mounted to the bottom of said water heater housing (91).

Description

Air supply structure and electric water heater Technical Field The invention relates to the technical field of electric water heaters, in particular to an air supply structure and an electric water heater. Background The existing electric water heater has the function of preparing hot water for users to use. The temperature in the bathroom is lower in winter, the ambient temperature is lower when the user bathes, and the experience of user's bathing is relatively poor, and for this reason, prior art proposes to be equipped with warm braw system for electric water heater, but finds when using that warm braw system's noise is great. Disclosure of Invention One of the technical problems to be solved by the invention is to provide an air supply structure which can reduce noise and improve stability. The second technical problem to be solved by the invention is to provide the electric water heater, which reduces noise, improves stability and improves user experience. The first technical problem is solved by the following technical scheme: an air supply structure comprising: The air supply device comprises an air supply shell, wherein a first supporting structure and a second supporting structure which are axially arranged at intervals are convexly arranged on the inner bottom wall of the air supply shell, the first supporting structure is connected with a motor cover plate positioned above the first supporting structure, and the second supporting structure is connected with a wind wheel cover plate positioned above the second supporting structure; The cross flow wind wheel is characterized in that one end of the cross flow wind wheel is connected with a rotating piece, and the rotating piece is clamped between the wind wheel cover plate and the second supporting structure along the radial direction and the axial direction of the cross flow wind wheel; the wind wheel motor is coaxially arranged with the cross flow wind wheel, an output shaft of the wind wheel motor is connected with the other end of the cross flow wind wheel to drive the cross flow wind wheel to rotate, and the wind wheel motor is clamped between the motor cover plate and the first supporting structure along the radial direction and the axial direction of the cross flow wind wheel. Compared with the background technology, the air supply structure has the following beneficial effects: According to the air supply structure provided by the invention, the wind wheel motor is supported by the first supporting structure, and the wind wheel motor is clamped between the motor cover plate and the first supporting structure; meanwhile, the second supporting structure supports the rotating piece connected with the cross-flow wind wheel, the rotating piece is clamped between the wind wheel cover plate and the second supporting structure, one axial end of the cross-flow wind wheel is rotatably arranged between the wind wheel cover plate and the second supporting structure through the rotating piece, the first supporting structure and the second supporting structure limit the cross-flow wind wheel and the wind wheel motor in the axial direction, the motor cover plate and the wind wheel cover plate limit the cross-flow wind wheel and the wind wheel motor in the radial direction, the stability of the cross-flow wind wheel in the rotating process is effectively improved, noise generated by shaking of the cross-flow wind wheel and the wind wheel motor is further reduced, and noise in the working process of the air supply structure is reduced. In one embodiment, the air supply housing is provided with an air supply channel, two ends of the air supply channel are respectively provided with an air inlet and an air outlet, a first volute tongue guide wall and a second volute tongue guide wall which extend along the circumferential direction of the through-flow wind wheel are formed on the inner wall of the upper side of the air supply channel, and the first volute tongue guide wall is positioned on one side of the second volute tongue guide wall close to the air inlet; the first volute tongue guide wall is an arc surface with the central axis interval of the cross flow wind wheel being R 1, the distance between the second volute tongue guide wall and the central axis of the cross flow wind wheel is R 2,R1＜R2, and the direction from the air outlet to the air inlet is gradually increased by R 2. In one embodiment, the extending direction of the first volute tongue guide wall from one end to the other end of the first volute tongue guide wall connected with the second volute tongue guide wall is the rotation direction of the through-flow wind wheel; the cross flow wind wheel comprises a wind wheel shaft and a plurality of blades which are sequentially arranged around the circumference of the wind wheel shaft, wherein two ends of each blade respectively form a near end and a far end, and the near end is closer to the wind wheel shaft than the far end; In any two adjacent