CN117345693A - Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method - Google Patents

Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method Download PDF

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Publication number
CN117345693A
CN117345693A CN202311233232.7A CN202311233232A CN117345693A CN 117345693 A CN117345693 A CN 117345693A CN 202311233232 A CN202311233232 A CN 202311233232A CN 117345693 A CN117345693 A CN 117345693A
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CN
China
Prior art keywords
guide ring
air
actuator
value
air volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311233232.7A
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Chinese (zh)
Inventor
王日聪
谭赞松
罗海员
杨经良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202311233232.7A priority Critical patent/CN117345693A/en
Publication of CN117345693A publication Critical patent/CN117345693A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a centrifugal fan with adjustable guide ring gaps, an air conditioner and a control method, wherein the centrifugal fan comprises a fan body, guide rings, an actuator and a sliding component; the fan body is provided with an air return opening, the guide ring and the plurality of actuators are arranged at the air return opening, each actuator is connected with a corresponding sliding assembly, and the actuators can control the guide ring to slide on the sliding assembly relative to the air return opening. The actuator can control the guide ring to slide on the sliding component relative to the return air inlet to adjust the gap between the guide ring and the return air inlet, so that the installation error between the guide ring and the return air inlet is reduced as much as possible, the guide ring can be ensured to run at the optimal gap position, and the functions of increasing air quantity and reducing noise of the guide ring are maximized; and the consistency of the mounted centrifugal fans can be improved, so that the air quantity value and the noise value generated by the centrifugal fans are closer to and even accord with the preset data.

Description

Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method
Technical Field
The invention relates to the technical field of air conditioners, in particular to a centrifugal fan capable of adjusting a guide ring gap, an air conditioner and a control method.
Background
The centrifugal fan of the existing air conditioner mainly comprises an impeller, a motor and a guide ring, wherein the impeller is fixedly arranged on a rotating shaft of the motor, and the guide ring is arranged at a return air inlet of the centrifugal fan, so that the effects of increasing air quantity and reducing noise are achieved.
The existing centrifugal fan has the following problems:
1. when the guide ring and the centrifugal fan are installed, an installation error exists between the guide ring and the return air inlet of the centrifugal fan, and it is difficult to ensure that the gap between the guide ring and the return air inlet is installed to meet the gap requirement in the preset, and then the guide ring cannot be ensured to run at the optimal gap position.
2. The consistency of the mounted centrifugal fans is poor, so that the air quantity value and the noise value generated by the centrifugal fans are also deviated from preset data, and even the deviation is overlarge.
Disclosure of Invention
In view of the above, the invention provides a centrifugal fan with adjustable guide ring gap, an air conditioner and a control method, which are used for solving the problem that the installation error exists between an air return port of the centrifugal fan and the guide ring in the prior art, and the guide ring cannot be positioned at the optimal gap position; and the consistency of the centrifugal fans is poor.
In order to achieve one or a part or all of the purposes or other purposes, the technical scheme of the invention is that the centrifugal fan with the adjustable guide ring gap comprises a fan body, a guide ring, an actuator and a sliding component;
the fan body is provided with an air return opening, the guide ring and the plurality of actuators are arranged at the air return opening, each actuator is connected with a corresponding sliding assembly, and the actuators can control the guide ring to slide on the sliding assembly relative to the air return opening.
Further, each sliding assembly comprises a sliding rod and a sliding block;
each actuator is correspondingly connected with one end of a sliding rod, the other end of the sliding rod penetrates through and is in sliding connection with the sliding block, the sliding block is fixedly connected with the edge of the guide ring, and the actuator can control the sliding block to drive the guide ring to reciprocate along the sliding rod.
Further, the running clearance of the actuator is 2-10mm.
An air conditioner comprising the centrifugal fan with adjustable guide ring gap as claimed in any one of the above.
Further, the air conditioner comprises a shell, one side of the shell corresponding to the air return opening is provided with an air return panel, and the air return panel is connected with an actuator and an air volume detection device.
Further, the air conditioner further comprises a fan support, the fan support is used for fixing the centrifugal fan, and a noise detection device is arranged on the fan support.
The control method of the air conditioner according to any one of the above, comprising the steps of:
s1: when the air conditioner is started and the centrifugal fan stably runs in a set voltage, the guide ring runs for one circle in the stroke of the actuator;
s2: dividing the travel of the actuator into a plurality of travel points with equal gaps, and recording and uploading an air quantity value and a noise value at one travel point when the actuator runs to the travel point;
s3: judging an air volume threshold interval in which the air volume value is located, acquiring a matched threshold air volume value or threshold noise value according to the air volume threshold interval, and determining the optimal gap position of the guide ring according to a travel point corresponding to the threshold air volume value or the threshold noise value;
s4: and controlling the guide ring to run to an optimal clearance position through the actuator.
Further, each time the actuator in step S2 is operated to one of the travel points, the control method includes:
stay for 30 seconds, and record the air quantity value and noise value of the travel point through the air quantity detection device and the noise detection device and upload to the control center.
Further, the air volume value recorded by the control center in the step S2 is the average value of all air volume values detected by the air volume detection device within 30 seconds;
the noise value recorded by the control center in the step S2 is the average value of all the noise values detected by the noise detection device in 30 seconds.
Further, the air volume threshold interval comprises a first threshold interval and a second threshold interval, and when the air volume value is in the first threshold interval, the threshold air volume value is the maximum air volume value detected in the travel point;
when the air volume value is in the second threshold interval, the threshold noise value is the minimum noise value detected in the travel point;
wherein the first threshold interval is less than 300m 3 And/h, the second threshold interval is greater than 300m 3 /h。
Compared with the prior art, the invention has at least the following beneficial effects:
the actuator can control the guide ring to slide on the sliding component relative to the return air inlet so as to adjust the gap between the guide ring and the return air inlet, so that the installation error between the guide ring and the return air inlet is reduced as much as possible, the gap between the guide ring and the return air inlet is ensured to meet the preset gap requirement, the guide ring can be ensured to operate at the optimal gap position, and the functions of increasing air quantity and reducing noise of the guide ring are maximized; and the consistency between the guide ring and the return air inlet can be improved, so that the installed centrifugal fan has good consistency, and the air quantity value and the noise value generated by the centrifugal fan are closer to and even accord with the preset data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an enlarged cross-sectional view of a centrifugal fan of the present invention;
fig. 2 is a cross-sectional view of an air conditioner of the present invention;
fig. 3 is an enlarged schematic view of reference symbol a in fig. 2;
fig. 4 is a schematic view of an internal structure of the air conditioner of the present invention;
fig. 5 is an enlarged schematic view of reference symbol B in fig. 4;
fig. 6 is a logic diagram of a control method of the centrifugal fan of the present invention.
Reference numerals:
10. a fan body;
101. an air return port;
20. a guide ring;
30. an actuator;
40. a sliding assembly;
401. a slide bar;
402. a slide block;
403. a limiting block;
50. a housing;
60. an air return panel;
70. an air volume detection device;
80. a fan bracket;
90. noise detection means.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the invention, not to imply that each embodiment of the invention must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles and structures of the present invention are described in detail below with reference to the drawings and the examples.
The fan body 10 of the present invention includes the impellers, motors and other components that are found in existing centrifugal fans.
As an embodiment, referring to fig. 1-2, the present invention proposes a centrifugal fan with adjustable guide ring gap, which includes a fan body 10, a guide ring 20, an actuator 30 and a sliding assembly 40; the shape of the guide ring 20 is preferably circular, and the guide ring 20 plays roles of increasing air quantity and reducing noise.
The fan body 10 is provided with an air return port 101, the guide ring 20 and the plurality of actuators 30 are arranged at the air return port 101, each actuator 30 is connected with a corresponding sliding component 40, and the actuators 30 can control the guide ring 20 to slide on the sliding component 40 relative to the air return port 101. Wherein the side of the actuator 30 facing away from the slide assembly 40 is embedded in or attached to the corresponding air conditioning case.
In this embodiment, the existing guide ring and the centrifugal fan are not integrated, so that during installation, an installation error exists between the guide ring and the return air inlet of the centrifugal fan, the consistency is poor, and it is difficult to ensure that the gap between the guide ring and the return air inlet meets the preset gap requirement, therefore, the invention provides a new guide ring automatic adjustment structure, that is, the actuator 30 can control the guide ring 20 to slide on the sliding component 40 relative to the return air inlet 101, so as to adjust the gap between the guide ring 20 and the return air inlet 101, reduce the installation error between the guide ring 20 and the return air inlet 101 as much as possible, ensure that the gap between the guide ring 20 and the return air inlet 101 meets the preset gap requirement as much as possible, and ensure that the guide ring 20 can operate at the optimal gap position, so that the functions of increasing the air volume and reducing noise generated by the guide ring 20 are maximized, and the air volume and reducing noise generated by the centrifugal fan are more similar to or even conform to the preset data.
Referring specifically to fig. 1 and 5, each of the slide assemblies 40 includes a slide bar 401 and a slide block 402; the sliding rod 401 is preferably a ball screw, although other sliding members that facilitate sliding of the sliding block 402 can be used.
Each actuator 30 is correspondingly connected with one end of a sliding rod 401, the other end of the sliding rod 401 passes through and is in sliding connection with the sliding block 402, the sliding block 402 is fixedly connected with the edge of the guide ring 20, and the actuator 30 can control the sliding block 402 to drive the guide ring 20 to reciprocate along the sliding rod 401.
In this embodiment, the actuators 30 are all electrically connected to a control center of the air conditioner, so that the control center controls the operation of the actuators 30 and receives the stroke condition of the actuators 30.
When the guide ring 20 of the centrifugal fan needs to be adjusted to the optimal gap position for running, the actuator 30 controls the sliding block 402 to do reciprocating motion along the sliding rod 401, and the sliding block 402 drives the guide ring 20 to do reciprocating motion along the sliding rod 401, so that the gap between the guide ring 20 and the return air inlet 101 is adjusted, the installation error between the guide ring 20 and the return air inlet 101 is reduced as much as possible, the gap between the guide ring 20 and the return air inlet 101 meets the preset gap requirement as much as possible, and the consistency is good, so that the guide ring 20 can run at the optimal gap position, the functions of increasing air quantity and reducing noise of the guide ring 20 are maximized, and the air quantity value and the noise value generated by the centrifugal fan are closer to or even accord with preset data.
In this embodiment, the running clearance of the actuator 30 is 2-10mm. The running clearance is the travel of the actuator 30, i.e., the distance the deflector 20 moves on the slide bar 401.
In this embodiment, referring to fig. 1-2, the actuators 30 are preferably four, the four actuators 30 can make the deflector 20 move more stably, and the four actuators 30 are distributed in a cross shape around the center of the deflector 20.
In order to prevent the guide ring 20 from falling off the sliding rod 401 when the sliding rod 401 slides, in this embodiment, referring to fig. 1 and fig. 5, a stopper 403 is disposed at the other end of the sliding rod 401 away from the actuator 30.
As an embodiment, referring to fig. 2-5, an air conditioner includes a centrifugal fan with an adjustable inducer gap as described in any one of the above.
In this embodiment, referring to fig. 2-3, the air conditioner includes a housing 50, a return air panel 60 is disposed on a side of the housing 50 corresponding to the return air inlet 101, and an actuator 30 and an air volume detecting device 70 are connected to the return air panel 60.
The shape of the return air panel 60 is preferably circular, the actuator 30 is located at the edge of the return air panel 60, the air volume detecting device 70 is located near the center of the return air panel 60, the return air panel 60 is opposite to the guide ring 20, and the guide ring 20 moves between the return air panel 60 and the return air inlet 101.
The air volume detection device 70 is preferably an air volume sensor, the air volume detection device 70 is electrically connected with the control center, and the air volume detection device 70 can convert the air volume value detected by itself into an electric signal or other information in a required form according to a certain rule and output the electric signal or information to the control center.
In this embodiment, referring to fig. 2 and fig. 4, the air conditioner further includes a fan bracket 80, where the fan bracket 80 is used to fix the centrifugal fan, and a noise detection device 90 is disposed on the fan bracket 80.
The fan bracket 80 is fixed at the bottom of the air conditioner, the noise detection device 90 is preferably a noise sensor, the noise detection device 90 is electrically connected with the control center, and the noise detection device 90 can convert the noise value detected by itself into an electric signal or other information in a required form according to a certain rule and output the electric signal or information to the control center.
As an embodiment, referring to fig. 2 and 6, a control method of an air conditioner according to any one of the above, includes the steps of:
s1: after the air conditioner is started and the centrifugal fan stably operates in a set voltage, the guide ring 20 operates for one circle in the stroke of the actuator 30; in the step S1, the guide ring 20 moves back and forth in the stroke of the actuator 30, so that the guide ring 20 returns to the original starting point (i.e. the stroke starting point of the actuator), which is convenient for the control center to accurately adjust the movement of the guide ring 20 next time, so that the guide ring 20 moves to the optimal gap position.
S2: dividing the travel of the actuator 30 into a plurality of travel points with equal gaps, and recording and uploading an air quantity value and a noise value at one of the travel points when the actuator 30 runs to the travel point; in the step S2, only the air volume value and the noise value at the travel point in the forward travel of the guide ring 20 from one end of the slide bar 401 near the actuator 30 to the other end are recorded, and the air volume value and the noise value are not recorded in the backward travel of the guide ring 20 from the other end of the slide bar 401 far from the actuator 30 to the one end.
S3: and judging an air volume threshold interval in which the air volume value is positioned, acquiring a matched threshold air volume value or threshold noise value according to the air volume threshold interval, and determining the optimal gap position of the guide ring 20 according to a travel point corresponding to the threshold air volume value or the threshold noise value.
S4: the actuator 30 controls the deflector 20 to move to the optimal gap position.
In this embodiment, each time the actuator 30 in step S2 moves to one of the travel points, it stays for 30 seconds, and at this time, the air volume detecting device 70 and the noise detecting device 90 record the air volume value and the noise value of the travel point, respectively, and upload the air volume value and the noise value to the control center. Of course, the detection time of the air volume detection device 70 and the noise detection device 90 can be correspondingly shortened or prolonged according to the actual requirements, and the detection frequency can be correspondingly modified according to the actual requirements.
Then the control center converts all the air volume values detected by the air volume detection device 70 within 30 seconds into corresponding air volume average values; the control center converts all noise values detected by the noise detection device 90 in 30 seconds into corresponding noise averages, so that each stroke point has a corresponding air volume average value and noise average value.
Assuming that the air volume detecting device 70 and the noise detecting device 90 detect every 0.5 seconds, the air volume detecting device 70 and the noise detecting device 90 upload the detected data within 30 seconds to the control center, and the control center adds all the data within 30 seconds and divides the added data by 60, so that the corresponding average value can be obtained.
In this embodiment, the air volume threshold interval includes a first threshold interval and a second threshold interval, and when the air volume value is in the first threshold interval, the threshold air volume value is the maximum air volume value detected in the travel point; when the air volume value is in the second threshold interval, the threshold noise value is the minimum noise value detected in the travel point; wherein the first threshold interval is less than 300m 3 And/h, the second threshold interval is greater than 300m 3 /h。
Therefore, when the average value of the air volume in the data of each stroke point recorded on the control center is more than 300m 3 When the air quantity is greater than 300m when the air quantity is equal to/h (q is greater than 0) 3 And selecting a corresponding minimum noise average value from the data of/h (q > 0), and then determining the optimal gap position of the guide ring 20 according to the travel point corresponding to the minimum noise average value.
When the average value of the air quantity in the data of each travel point recorded on the control center is less than 300m 3 When the air quantity is smaller than 300m when the air quantity is equal to/h (q is larger than 0) 3 And selecting a maximum air volume average value from data of/h (q is more than 0), and then determining the optimal gap position of the guide ring 20 according to a travel point corresponding to the maximum air volume average value.
When the control center controls the guide ring 20 to operate to the optimal gap position through the actuator 30, the control center closes the actuator 30, the air volume detection device 70 and the noise detection device 90, so that the guide ring 20 is prevented from being positioned at the optimal gap position any more due to certain movement of the guide ring 20 controlled by the actuator 30 caused by some unexpected situations in the later use process; and the closing of the actuator 30, the air volume detecting device 70 and the noise detecting device 90 also saves energy and correspondingly reduces the energy consumption of the air conditioner.
Wherein the stroke of the actuator 30 in step S2 is 2-10mm (there may be a certain deviation between the stroke of the actuator 30 and the actual gap between the deflector 20 and the return air inlet 101, but the deviation is within the production allowable range). The stroke of the actuator 30 is divided into a plurality of equal-gap stroke points (the stroke starting point of the actuator 30 is 0), including but not limited to the following:
(1) When the stroke of the actuator 30 is 2.0mm, the actuator 30 divides the 2.0mm into 5 stroke points of 0.4mm or 10 stroke points of 0.2mm or 20 stroke points of 0.1mm, then when the actuator 30 runs the corresponding stroke of 0.4mm or 0.2mm or 0.1mm, the actuator 30 controls the deflector 20 to stay for 30 seconds, then the air volume detection device 70 and the noise detection device 90 respectively record the air volume value and the noise value of the stroke points within 30 seconds and upload the air volume value and the noise value to the control center, and then the control center calculates the average value of the air volume value and the noise value within 30 seconds.
(2) When the stroke of the actuator 30 is 6.0mm, the actuator 30 is divided into 12 stroke points of 0.5mm or 15 stroke points of 0.4mm or 20 stroke points of 0.3mm, then the actuator 30 controls the deflector 20 to stay for 30 seconds every time the actuator 30 runs the corresponding stroke of 0.5mm or 0.4mm or 0.3mm, then the air volume detection device 70 and the noise detection device 90 record the air volume value and the noise value of the stroke points within 30 seconds respectively and upload the air volume value and the noise value to the control center, and then the control center calculates the average value of the air volume value and the noise value within 30 seconds.
(3) When the stroke of the actuator 30 is 10.0mm, the actuator 30 divides the 10.0mm into 20 stroke points of 0.5mm or 25 stroke points of 0.4mm or 50 stroke points of 0.2mm, then when the actuator 30 runs the corresponding stroke of 0.5mm or 0.4mm or 0.2mm, the actuator 30 controls the deflector 20 to stay for 30 seconds, then the air volume detection device 70 and the noise detection device 90 respectively record the air volume value and the noise value of the stroke points within 30 seconds and upload the air volume value and the noise value to the control center, and then the control center calculates the average value of the air volume value and the noise value within 30 seconds.
After the deflector 20 runs for one circle in the stroke of the actuator 30, the control center records the air volume average value and the noise average value corresponding to each stroke point in the stroke of the actuator 30, and then determines whether the air volume average value is greater than 300m 3 And/h (q > 0) to determine the optimal gap position between the deflector 20 and the return air inlet 101.
For example, the stroke of the actuator 30 is set to 6.0mm, andwhen the 5.0mm is divided into 15 travel points of 0.4mm, the control center records the air volume average value and the noise average value of each travel of the actuator 30 of 0.4mm, wherein the air volume average value and the noise average value are 15, and the air volume average value is preferentially selected from the 15 air volume average values to be more than 300m 3 Data of/h (q > 0), and then the average value of the air quantity is larger than 300m 3 The minimum noise average value is correspondingly selected from the data of/h (q > 0), and then the travel point corresponding to the minimum noise average value is the optimal clearance position of the guide ring 20, at this time, the control center moves the guide ring 20 to the travel point through the actuator 30, so that the guide ring 20 can be ensured to run on the optimal clearance position, and the functions of increasing the air quantity and reducing the noise of the guide ring 20 are maximized.
Of course, if none of the 15 air volume averages is greater than 300m 3 And if the data of/h (q is more than 0), selecting the maximum air volume average value, and then selecting a travel point corresponding to the maximum air volume average value as the optimal clearance position of the guide ring 20, wherein the control center moves the guide ring 20 to the travel point through the actuator 30, so that the guide ring 20 can run on the optimal clearance position, and the functions of increasing air volume and reducing noise of the guide ring 20 are maximized.
The invention solves the following problems:
the actuator 30 can control the guide ring 20 to slide on the sliding assembly 40 relative to the air return port 101 to adjust the gap between the guide ring 20 and the air return port 101, so as to reduce the installation error between the guide ring 20 and the air return port 101 as much as possible, ensure that the gap between the guide ring and the air return port meets the gap requirement in the preset, ensure that the guide ring 20 can operate at the optimal gap position, and maximize the functions of increasing air quantity and reducing noise of the guide ring 20; and the consistency between the guide ring 20 and the return air inlet 101 can be improved, so that the consistency of the mounted centrifugal fan is good, and the air quantity value and the noise value generated by the centrifugal fan are closer to or even accord with the preset data.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. The utility model provides an adjustable water conservancy diversion circle clearance's centrifugal fan which characterized in that: comprises a fan body (10), a guide ring (20), an actuator (30) and a sliding component (40);
the fan body (10) is provided with an air return opening (101), the guide ring (20) and a plurality of actuators (30) are arranged at the air return opening (101), each actuator (30) is connected with a corresponding sliding assembly (40), and the actuators (30) can control the guide ring (20) to slide on the sliding assemblies (40) relative to the air return opening (101).
2. The centrifugal fan with adjustable guide ring gap according to claim 1, wherein:
each sliding assembly (40) comprises a sliding rod (401) and a sliding block (402);
each actuator (30) is correspondingly connected with one end of a sliding rod (401), the other end of the sliding rod (401) penetrates through and is in sliding connection with the sliding block (402), the sliding block (402) is fixedly connected with the edge of the guide ring (20), and the actuator (30) can control the sliding block (402) to drive the guide ring (20) to reciprocate along the sliding rod (401).
3. The centrifugal fan with adjustable guide ring gap according to claim 2, wherein:
the running clearance of the actuator (30) is 2-10mm.
4. An air conditioner, characterized in that: a centrifugal fan comprising an adjustable inducer gap of any of claims 1-3.
5. An air conditioner according to claim 4, wherein:
the air conditioner comprises a shell (50), wherein a return air panel (60) is arranged on one side of the shell (50) corresponding to the return air inlet (101), and an actuator (30) and an air volume detection device (70) are connected to the return air panel (60).
6. An air conditioner according to claim 4, wherein:
the air conditioner further comprises a fan support (80), the fan support (80) is used for fixing the centrifugal fan, and a noise detection device (90) is arranged on the fan support (80).
7. A control method of an air conditioner according to any one of claims 4 to 6, wherein: the method comprises the following steps:
s1: when the air conditioner is started and the centrifugal fan stably runs in a set voltage, the guide ring (20) is controlled to run for one circle in the stroke of the actuator (30);
s2: dividing the travel of the actuator (30) into a plurality of travel points with equal gaps, and recording and uploading an air quantity value and a noise value at one travel point when the actuator (30) runs to the travel point;
s3: judging an air volume threshold interval in which the air volume value is located, acquiring a matched threshold air volume value or threshold noise value according to the air volume threshold interval, and determining the optimal gap position of the guide ring (20) according to a travel point corresponding to the threshold air volume value or the threshold noise value;
s4: the actuator (30) controls the guide ring (20) to move to an optimal clearance position.
8. The control method according to claim 7, characterized in that:
each time the actuator (30) in step S2 is operated to one of the travel points, the control method includes:
stay for 30 seconds, and the air quantity value and the noise value of the travel point are recorded by an air quantity detection device (70) and a noise detection device (90) and uploaded to a control center.
9. The control method according to claim 8, characterized in that:
s2, the air quantity value recorded by the control center is the average value of all air quantity values detected by the air quantity detection device (70) within 30 seconds;
the noise value recorded by the control center in the step S2 is the average value of all the noise values detected by the noise detection device (90) in 30 seconds.
10. The control method according to claim 7, characterized in that:
the air volume threshold interval comprises a first threshold interval and a second threshold interval, and when the air volume value is in the first threshold interval, the threshold air volume value is the maximum air volume value detected in the travel point;
when the air volume value is in the second threshold interval, the threshold noise value is the minimum noise value detected in the travel point;
wherein the first threshold interval is less than 300m 3 And/h, the second threshold interval is greater than 300m 3 /h。
CN202311233232.7A 2023-09-22 2023-09-22 Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method Pending CN117345693A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311233232.7A CN117345693A (en) 2023-09-22 2023-09-22 Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311233232.7A CN117345693A (en) 2023-09-22 2023-09-22 Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method

Publications (1)

Publication Number Publication Date
CN117345693A true CN117345693A (en) 2024-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311233232.7A Pending CN117345693A (en) 2023-09-22 2023-09-22 Centrifugal fan capable of adjusting gap of guide ring, air conditioner and control method

Country Status (1)

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