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CN-122014675-A - Volute fan, range hood and control method of volute fan

CN122014675ACN 122014675 ACN122014675 ACN 122014675ACN-122014675-A

Abstract

The invention relates to the technical field of kitchen appliances, and particularly discloses a volute fan, a range hood and a control method of the volute fan, wherein the volute fan comprises a volute, an impeller and a cleaning assembly, the impeller comprises an impeller frame rotatably arranged in the volute, and a plurality of blades uniformly arranged on the impeller frame along the circumferential direction of the impeller frame, and the blades are provided with a windward side and a leeward side which are oppositely arranged along the rotation direction of the impeller; the cleaning assembly comprises a first cleaning pipe and a second cleaning pipe, the first cleaning pipe and the second cleaning pipe are both used for conveying cleaning media, the first cleaning pipe and the second cleaning pipe are both arranged through the volute, the spraying end of the first cleaning pipe faces the windward side of the blade, and the spraying end of the second cleaning pipe faces the leeward side of the blade. The cleaning medium can be sprayed to the windward side of the blade through the first cleaning pipe, and the cleaning medium can be sprayed to the leeward side of the blade through the second cleaning pipe, so that the windward side and the leeward side of the blade can be effectively cleaned, and the cleaning effect is improved.

Inventors

  • ZHANG YIFAN
  • LUO XIANCAI
  • HU DONGFANG
  • REN FUJIA
  • ZHANG SU

Assignees

  • 杭州老板电器股份有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (11)

  1. 1. A scroll fan, comprising: A volute (1); an impeller (2) comprising an impeller frame (22) rotatably arranged in the volute (1), and a plurality of blades (21) uniformly arranged on the impeller frame (22) along the circumferential direction of the impeller frame (22), wherein the blades (21) are provided with a windward surface (211) and a leeward surface (212) which are oppositely arranged along the rotation direction of the impeller (2); Clean subassembly (3), including first clean pipe (31) and second clean pipe (32), first clean pipe (31) with second clean pipe (32) all are used for carrying cleaning medium, just first clean pipe (31) with second clean pipe (32) all wear to locate spiral case (1), the injection end of first clean pipe (31) orientation windward side (211) of blade (21), the injection end of second clean pipe (32) orientation leeward side (212) of blade (21).
  2. 2. The spiral case fan according to claim 1, further comprising a first silencing piece (5) and a second silencing piece (6), wherein the first silencing piece (5) and the second silencing piece (6) are both arranged outside the spiral case (1), the first silencing piece (5) and the second silencing piece (6) are both fixedly connected with the spiral case (1), the first cleaning pipe (31) is arranged in the first silencing piece (5) in a penetrating manner, and the second cleaning pipe (32) is arranged in the second silencing piece (6) in a penetrating manner.
  3. 3. The volute fan according to claim 2, characterized in that a first silencing cavity (51) is arranged in the first silencing piece (5), the first cleaning pipe (31) penetrates through the first silencing cavity (51), and the first silencing piece (5) is further provided with a plurality of first silencing holes (52) which are communicated with the first silencing cavity (51) and the outside; The second silencing piece (6) is internally provided with a second silencing cavity (61), the second cleaning pipe (32) penetrates through the second silencing cavity (61), and the second silencing piece (6) is also provided with a plurality of second silencing holes (62) which are communicated with the second silencing cavity (61) and the outside.
  4. 4. The volute fan of claim 1, wherein the windward side (211) comprises a first showered region (2111) and a first shielded region (2112), the first cleaning tube (31) has a first showered region, the plurality of blades (21) comprises a first blade (21 a) and a second blade (21 b) disposed adjacent to each other, and the first blade (21 a) is positioned downstream of the second blade (21 b) in a direction of rotation of the impeller (2), the first shielded region (2111) of the second blade (21 b) being opposite to a spray end of the first cleaning tube (31) when both the first blade (21 a) and the second blade (21 b) are positioned at the first showered region, the first blade (21 a) being shielded between the first shielded region (2112) of the second blade (21 b) and the spray end of the first cleaning tube (31), the first blade (21 b) being configured to collect liquid droplets (2111) at the first rotational speed or the second shielded region (2112); The leeward side (212) comprises a second showering region (2121) and a second shielding region (2122), the second cleaning pipe (32) has a second showering region, a plurality of the blades (21) comprise a third blade (21 c) and a fourth blade (21 d) which are adjacently arranged, and the third blade (21 c) is positioned upstream of the fourth blade (21 d) along the rotation direction of the impeller (2), when the third blade (21 c) and the fourth blade (21 d) are both positioned in the second showering region, the second showering region (2121) of the fourth blade (21 d) is opposite to the spraying end of the second cleaning pipe (32), the third blade (21 c) is shielded between the second shielding region (2122) of the fourth blade (21 d) and the spraying end of the second cleaning pipe (32), and the impeller (2) is configured to collect liquid droplets (2122) from the second showering region (2121) when the third blade (21 d) is rotated at a first rotation speed.
  5. 5. The volute fan according to claim 1, characterized in that the impeller (2) is configured to rotate at a second rotational speed such that the cleaning medium droplets converging to the leeward side (212) and the windward side (211) of each blade (21) are thrown to the inner wall of the volute (1).
  6. 6. The volute fan according to any one of claims 1-5, characterized in that the cleaning assembly (3) comprises a plurality of the first cleaning pipes (31), the plurality of the first cleaning pipes (31) being evenly and at intervals along the axial direction of the impeller (2); the cleaning assembly (3) comprises a plurality of second cleaning pipes (32), and the second cleaning pipes (32) are uniformly and alternately distributed along the axial direction of the impeller (2).
  7. 7. The volute fan according to claim 6, characterized in that the cleaning assembly (3) further comprises a first shunt tube (33) connected to the plurality of first cleaning tubes (31), respectively, a second shunt tube (34) connected to the plurality of second cleaning tubes (32), respectively, and a main liquid inlet tube (35) connected to the first shunt tube (33) and the second shunt tube (34), respectively, the main liquid inlet tube (35) being for inputting cleaning medium.
  8. 8. A range hood, characterized in that the range hood comprises a hood body, the range hood further comprises a volute fan according to any one of claims 1-7, and the volute fan is arranged in the hood body.
  9. 9. A method of controlling a scroll fan, implemented by the scroll fan according to any one of claims 1 to 7, comprising: Acquiring a cleaning instruction; The impeller (2) operates at a first rotational speed and the first cleaning tube (31) and the second cleaning tube (32) spray cleaning agent simultaneously for a first set time; The rotating speed of the impeller (2) is adjusted to not exceed the set rotating speed and is continued for a second set time; The impeller (2) operates at a second rotating speed and lasts for a third set time, wherein when the impeller (2) operates at the second rotating speed, liquid drops on the surfaces of the blades (21) can be thrown to the inner wall of the volute (1), and the second rotating speed, the first rotating speed and the set rotating speed are sequentially reduced; And standing for a fourth set time.
  10. 10. The method of claim 9, further comprising, after the fourth set time of standing: The impeller (2) operates at a first rotational speed and the first cleaning tube (31) and the second cleaning tube (32) spray water simultaneously for a fifth set time; The impeller (2) is operated at a second rotational speed for a sixth set time.
  11. 11. The control method of a scroll fan according to claim 10, wherein after the impeller (2) is operated at the second rotational speed for a sixth set time, further comprising: The impeller (2) operates at a third rotational speed and heats the air flowing into the scroll blower.

Description

Volute fan, range hood and control method of volute fan Technical Field The invention relates to the technical field of kitchen appliances, in particular to a volute fan, a range hood and a control method of the volute fan. Background In the structure of the range hood, the volute fan is a core power component of the whole range hood and comprises a volute, an impeller, a motor and the like. The range hood utilizes the motor to drive the impeller to rotate in the volute to generate negative pressure, so that the range hood can pump the oil fume out and discharge the oil fume out of a room. Along with the accumulation of the running time of the range hood, oil stains and particulate matters in the oil fume inevitably adhere to the surface of the impeller and the inner wall of the volute, and the accumulated oil stains not only can reduce the smoke discharging efficiency of the range hood and increase the energy consumption and noise, but also can cause bacteria and even fire because of accumulation of the oil stains. In this regard, the related art proposes to clean the greasy dirt by spraying the cleaning medium externally. Specifically, the range hood further comprises a liquid storage tank, a liquid conveying pipe communicated with the liquid storage tank and a cleaning pipe communicated with the liquid conveying pipe, wherein the cleaning pipe stretches into the volute, the blades are provided with a windward side and a leeward side along the rotation direction of the impeller, the windward side faces inwards and the leeward side faces outwards, and the cleaning pipe is used for spraying cleaning media on the leeward side of the blades. The blades on the surface of the impeller are arranged in an arc shape, the blades on the surface of the impeller are densely distributed, so that the leeward surfaces of the adjacent blades are staggered, the cleaning medium can not cover the whole leeward surface of the blades due to shielding among the blades during spraying, the windward surfaces of the blades can not be sprayed with the cleaning medium, and therefore the cleaning effect of the blades is poor. Disclosure of Invention The invention aims to provide a volute fan, a range hood and a control method of the volute fan, so as to improve the cleaning effect on the inner wall of a volute and an impeller. In a first aspect, the present invention provides a scroll fan comprising: a volute; the impeller comprises an impeller frame rotatably arranged in the volute, and a plurality of blades uniformly arranged on the impeller frame along the circumferential direction of the impeller frame, wherein the blades are provided with a windward surface and a leeward surface which are oppositely arranged along the rotation direction of the impeller; The cleaning assembly comprises a first cleaning pipe and a second cleaning pipe, wherein the first cleaning pipe and the second cleaning pipe are both used for conveying cleaning media, the first cleaning pipe and the second cleaning pipe are both arranged in the spiral case in a penetrating mode, the spraying end of the first cleaning pipe faces the windward side of the blade, and the spraying end of the second cleaning pipe faces the leeward side of the blade. As one of the preferred technical schemes of the spiral case fan, the spiral case fan further comprises a first silencing piece and a second silencing piece, the first silencing piece and the second silencing piece are arranged outside the spiral case, the first silencing piece and the second silencing piece are fixedly connected with the spiral case, the first cleaning pipe penetrates through the first silencing piece, and the second cleaning pipe penetrates through the second silencing piece. As one preferable technical scheme of the volute fan, a first silencing cavity is arranged in the first silencing piece, the first cleaning pipe penetrates through the first silencing cavity, and a plurality of first silencing holes which are communicated with the first silencing cavity and the outside are also formed in the first silencing piece; the second silencing piece is internally provided with a second silencing cavity, the second cleaning pipe penetrates through the second silencing cavity, and the second silencing piece is further provided with a plurality of second silencing holes communicated with the second silencing cavity and the outside. As one preferable technical scheme of the volute fan, the windward side comprises a first showering area and a first shielding area, the first cleaning pipe is provided with a first spraying area, the blades comprise a first blade and a second blade which are adjacently arranged, and the first blade is positioned at the downstream of the second blade along the rotation direction of the impeller; when the first blade and the second blade are both positioned in the first spraying area, the first spraying area of the second blade is opposite to the spraying end of the first cleaning p