CN217763683U - Fan structure and air conditioner - Google Patents
Fan structure and air conditioner Download PDFInfo
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- CN217763683U CN217763683U CN202221737241.0U CN202221737241U CN217763683U CN 217763683 U CN217763683 U CN 217763683U CN 202221737241 U CN202221737241 U CN 202221737241U CN 217763683 U CN217763683 U CN 217763683U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides a fan structure and air conditioner, wherein the fan structure includes the fan, is located the air outlet department of fan and all sides and is equipped with the water conservancy diversion circle in at least one ventilation hole for drive fan is along the elevating gear of the axial lift of water conservancy diversion circle, is used for detecting the pressure measurement of fan air inlet pressure, controls elevating gear drive fan when fan air inlet pressure is greater than when predetermineeing the threshold value and rises to the controller that is located the top in ventilation hole along the axial direction of water conservancy diversion circle. The utility model provides a fan structure and air conditioner judges whether the unit is in the defrosting operating mode through detecting the heat exchanger fin inside and outside pressure differential, if then control the drive fan from the initial altitude rise to the ventilation height that the fan blade is higher than the ventilation hole of water conservancy diversion circle, adjust inside and outside pressure differential simultaneously and reduce the fan load to motor aeration cooling, further reduce the motor and generate heat the raising efficiency, the outdoor unit that is particularly suitable for air conditioning module machine carries out ventilation cooling and carries out the effect to the motor of fan under the abominable defrosting operating mode of heat exchanger.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, more specifically say, relate to a fan structure and air conditioner that are particularly suitable for air conditioning module machine.
Background
At present, the fan of air conditioning module machine adopts the structure of motor + fan blade + water conservancy diversion circle + screen panel + panel usually, motor housing is tensile aluminum hull or cylinder iron-clad, the motor afterbody does not take independent fan, the fan of this kind of structure, its motor cooling if only rely on the motor shaft to drive the fan blade rotation of head and take away partial heat, then can't reach sufficient cooling effect, still need rely on the fin clearance of heat exchanger in the wind channel of fan subassembly below to ventilate between wind gap (air intake) and the external environment down, realize the convection current ventilation between wind gap about the fan, thereby improve the cooling radiating effect to the motor of fan.
When the heat exchanger unit is used as an outdoor unit of a modular air conditioner, if the heat exchanger unit is used in winter in the north and partial south regions, the heat exchanger of the heat exchanger unit is usually used as an outdoor unit evaporator (the indoor unit heat exchanger adopts a condenser), when the outdoor environment temperature is high and fins of the heat exchanger unit of the outdoor unit are not affected by frosting, the heat exchanger unit can realize smooth convection ventilation of an upper air opening and a lower air opening through fin gaps of the heat exchanger, the heat dissipation of a motor of the fan can be ensured at the moment, and the unit can be in a normal working state.
When the outdoor environment temperature is low, the fin of the heat exchanger unit of the outdoor unit is reduced due to frosting gaps, the resistance of the heat exchanger flowing through the lower air inlet is increased, the air flow entering the unit from the lower air inlet is reduced, the heat exchange efficiency is reduced, the defrosting function needs to be started for the unit at the moment, the heat exchanger of the outdoor unit is converted into a condenser from the evaporator (the heat exchanger of the indoor unit is converted into the evaporator from the condenser at the moment), and the heat is released to the external environment by the heat exchanger of the outdoor unit to defrost the outdoor unit. However, the defrosting is a slow process, and in this process, the fan at the upper air inlet continuously draws air from the inside of the unit to the outside, so that the static pressure in the unit is gradually reduced, and the absolute value of the negative pressure is increased, so that the pressure difference between the inside and the outside of the unit is continuously increased, and further the load torque and the resistance of the fan are gradually increased, and finally the load of the fan is increased, the efficiency is reduced, the current is too large, and the heat is increased.
When the heat exchanger frosts seriously, even the lower air inlet of the unit is blocked, so that the static pressure in the unit is too low, and the load of the fan and the heating of the motor are serious. Through tests, when a motor of the fan operates under the high-low voltage defrosting limit working condition, the load and the temperature rise are both rapidly increased, the load of the motor is about three times of that of the motor under the defrosting working condition, the efficiency of the fan is rapidly reduced, and the temperature of the motor is rapidly increased. The existing technical scheme for solving the problems is mainly to increase the design allowance of the motor at the beginning of design, for example, to overlap a thick copper structure to increase the usage amount of a copper heat dissipation structure of the motor, but such a technical scheme will increase the unit cost greatly and has poor heat dissipation protection effect on the motor.
Therefore, the technical problems to be solved in the field are that the fan motor efficiency is low and the heat generation is high under the defrosting condition of the low-temperature environment in the traditional air conditioner module outdoor heat exchanger unit.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current air conditioning module outdoor heat exchanger unit fan motor inefficiency, the high technical problem that generates heat under the low temperature environment condition of defrosting, provide a fan structure and air conditioner that are particularly suitable for air conditioning module machine.
For solving the above problem, the utility model discloses a technical scheme be:
provided is a fan structure including:
the fan, be located the air outlet department of fan and all sides are equipped with the water conservancy diversion circle in at least one ventilation hole for the elevating gear that the axial that drive fan along the water conservancy diversion circle goes up and down, the pressure measurement device that is used for detecting fan inlet air pressure, control elevating gear drive fan when fan inlet air pressure is greater than and predetermine the threshold value and rise to the controller that is located the top in ventilation hole along the axial direction of water conservancy diversion circle.
Further, when the air inlet pressure of the fan is smaller than or equal to a preset threshold value, the controller controls the lifting device to drive the fan to fall back to the lower portion of the air vent along the axial direction of the flow guide ring.
Further, the sensing device converts the detected air inlet pressure of the fan into an electric signal and then sends the electric signal to the controller.
Preferably, the lifting device is a hydraulic device.
Further, the hydraulic device includes:
at least one hydraulic cylinder;
the hydraulic rod is arranged between the hydraulic cylinder and the bottom of the fan, changes the distance between the hydraulic cylinder and the hydraulic rod along with the pressure change of the corresponding hydraulic cylinder, and drives the bottom of the fan to ascend or descend relative to the hydraulic cylinder;
the pressure inlet pipeline is provided with a first valve and is connected with an inlet of the hydraulic cylinder;
and the pressure outlet pipeline is provided with a second valve and is connected with the outlet of the hydraulic cylinder.
Further, the controller controls the distance between the hydraulic rod and the corresponding hydraulic cylinder through controlling the first valve and the second valve, so that the ascending or descending stroke of the fan is controlled.
Preferably, the hydraulic device comprises four hydraulic cylinders, each hydraulic cylinder is connected with one hydraulic rod, and the peripheral sides of the motors of the fans are respectively installed on the corresponding hydraulic rods of the four hydraulic cylinders.
Further, the lifting device adopts an eccentric wheel device.
Furthermore, the lifting device adopts a magnetic suspension device.
Preferably, when the ventilation hole is provided with a plurality of, a plurality of ventilation holes are evenly distributed along the circumference of the guide ring on the same height.
The utility model also provides an air conditioner, the air conditioner has adopted foretell fan structure.
Further, when the lifting device adopts a hydraulic device, an inlet of a hydraulic cylinder of the hydraulic device is communicated with an exhaust pipe of a compressor of the air conditioner through a pressure inlet pipeline, an outlet of the hydraulic cylinder of the hydraulic device is communicated with an air suction pipe of the compressor through a pressure outlet pipeline, and the pressure inlet pipeline and the pressure outlet pipeline are respectively and correspondingly provided with a first valve and a second valve.
Further, the pressure detection device adopts a pressure sensor arranged on the inner side of a fin of the heat exchanger of the air conditioner, the pressure sensor is electrically connected with the controller, the first valve and the second valve respectively adopt a first electromagnetic expansion valve and a second electromagnetic expansion valve, and the first electromagnetic expansion valve and the second electromagnetic expansion valve are electrically connected with the controller through signal transmission lines respectively.
Further, the air conditioner includes an air conditioning module.
Compared with the prior art, the utility model provides a fan structure and air conditioner has following beneficial effect:
the utility model provides a fan structure and use its air conditioner detects heat exchanger fin inside and outside pressure differential through pressure sensor and judges whether the unit is in abominable defrosting operating mode, if then control elevating gear drive fan from initial height rise to the ventilation height that the fan blade is higher than the ventilation hole of water conservancy diversion circle, adjust the unit inside and outside pressure differential when realizing the motor aeration cooling to the fan, and then reduce fan load resistance, finally further reduce the motor current and the generate heat of fan, improve fan efficiency and avoid because of overcurrent protection shut down under the abominable defrosting operating mode; and when the pressure difference between the inner side and the outer side of the unit is normal, the unit is judged to be defrosted, the lifting device is controlled to drive the fan to fall back to the initial height from the ventilation height, and the ventilation and heat dissipation structure is in a closed state under the normal operation condition of the unit, so that the overall performance of the unit cannot be influenced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a fan structure provided by the present invention;
fig. 2 is a schematic structural diagram of a flow guiding ring according to an embodiment of the fan structure provided by the present invention;
fig. 3 is a schematic diagram of the logic control of ventilation by using the fan structure of the air conditioner provided by the present invention.
Wherein, in the drawings, the reference numerals are mainly as follows:
1. a frame; 11. a support plate; 2. a hydraulic cylinder; 21. a hydraulic rod; 31. a motor; 32. a fan blade; 4. a flow guide ring; 41. a vent hole; 5. a dust screen; 6. a pressure inlet line; 61. a first valve; 7. a pressure outlet line; 71. a second valve; 8. a controller; 81. a signal transmission line; 9. a compressor.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings 1 to 3 and the embodiments.
Referring to fig. 1-3, the present invention provides a fan structure, including:
a fan; the guide ring 4 is fixedly arranged at the air outlet of the fan, and a plurality of vent holes 41 are formed in the periphery of the guide ring 4; the lifting device is used for driving the fan to lift along the axial direction of the guide ring 4; in this embodiment, the fan is composed of a motor 31 and a fan blade 32 nested on an output shaft of the motor 31, the motor 31 is fixedly installed on the lifting device, the fan blade 32 of the fan is located at the inner side of the flow guide ring 4, and the lifting device and the flow guide ring 4 are both fixedly installed on the rack 1 arranged below the fan; the pressure detection device (not shown in the figure) is used for calculating the air inlet pressure of the fan; the controller 8 is preferably a control main board and is electrically connected with the pressure sensor, when the air inlet pressure of the fan is greater than a preset threshold value, the controller 8 controls the lifting device to drive the fan to ascend from the initial height below the vent hole 41 to the ventilation height above the vent hole 41 along the axial direction of the flow guide ring 4, namely the fan is controlled to ascend and descend between the initial height and the ventilation height; in this embodiment, when the air inlet pressure of the fan is less than or equal to the preset threshold, the controller 8 controls the lifting device to drive or remove the driving of the fan, so that the fan is driven by the lifting device or the lifting device removes the driving of the lifting device to overcome the weight lifting, and falls back to the initial height from the ventilation height along the axial direction of the flow guide ring 4 by using the self gravity of the fan. In this embodiment, the pressure detection device converts the detected fan inlet air pressure into an electrical signal and sends the electrical signal to the controller 8.
In the embodiment, the lifting device adopts a hydraulic device, and the hydraulic device comprises at least one hydraulic cylinder 2 arranged on the frame 1; the hydraulic rod 21 is arranged between the hydraulic cylinder 2 and the bottom of the fan, changes the distance between the hydraulic cylinder 2 and the hydraulic rod along with the pressure change of the corresponding hydraulic cylinder 2, and drives the bottom of the fan to drive the whole fan to ascend or descend relative to the hydraulic cylinder 2; the pressure inlet pipeline 6 is provided with a first valve 61 and is connected with the inlet of the hydraulic cylinder 2; a pressure outlet line 7, provided with a second valve 71, is connected to the outlet of the hydraulic cylinder 2. In this embodiment, the controller controls the distance between the hydraulic rod and the corresponding hydraulic cylinder by controlling the first valve and the second valve, so as to control the ascending or descending stroke of the fan.
In this embodiment, the motor 31 of the fan is mounted on the hydraulic rod 21 of the hydraulic cylinder 2, and the hydraulic rod 21 is used as a push-out moving member of the hydraulic device to push up the fan integrally with the motor 31 and the fan blade 32 upward until the height of the fan blade is higher than the vent hole 41 by a certain height to the ventilation height, or the hydraulic rod 21 drives the fan to fall back downward to the initial height. As a preferred embodiment, the frame 1 comprises: the base, this base preferred adopt the rectangle base, a plurality of backup pads 11 of fixed mounting on the base, and the water conservancy diversion circle is installed in backup pad 11, and each pneumatic cylinder 2 of elevating gear sets up fixedly on the base. In a preferred embodiment, four support plates 11 are provided at four corners of the base, respectively. The hydraulic device comprises four hydraulic cylinders 2 arranged on the frame 1, and the peripheral sides of the motor 31 of the fan are respectively arranged on the corresponding hydraulic rods 21 of the four hydraulic cylinders 2 through connecting plates.
In one embodiment, the lifting device is an eccentric wheel device, and the eccentric wheel device comprises a driving part which is electrically connected with the controller 8 and is arranged on the frame 1, and an eccentric wheel mechanism which is connected between the driving part and the fan; when the pressure difference is greater than the preset threshold value, the controller 8 controls the driving part to drive the eccentric wheel mechanism to drive the fan to ascend until the height of the blade of the fan is higher than the vent hole 41 by a certain height, and the controller 8 controls the driving part to stop rotating so that the fan is kept at the height; when the pressure difference is smaller than the preset threshold value, the controller 8 controls the driving piece to drive the eccentric wheel mechanism to drive the fan to fall back until the fan returns to the initial height, and the controller 8 controls the driving piece to stop. In this embodiment, the driving member is preferably a driving motor, and other driving members such as a rotary cylinder may be used.
In another embodiment, the lifting device is a magnetic suspension device, the magnetic suspension device includes an electromagnetic core located below the fan and mounted on the frame 1, and the main body of the motor 31 of the fan is made of a magnetic material (such as ferromagnetic material like iron, nickel, etc.) that can be influenced by an electromagnetic field generated by electrifying the electromagnetic core; when the pressure difference is greater than the preset threshold value, the controller 8 controls the electromagnetic core to be connected with a high-frequency power supply to generate a high-frequency electromagnetic field, the fan generates induction eddy current corresponding to the high-frequency electromagnetic field, the fan overcomes the gravity rise of the fan under the action of the induction eddy current and the electromagnetic force (Lorentz force) of the high-frequency electromagnetic field generated by the electromagnetic core and the guiding action of a guiding structure arranged on the rack 1 until the height of a blade of the fan is higher than the vent hole 41, the controller 8 controls and changes the frequency of the electromagnetic field at the moment, the upward lifting force of the electromagnetic force on the fan is balanced with the gravity of the fan, and the fan keeps suspended above the vent hole 41 at the moment; when the pressure difference is smaller than or equal to the preset threshold value, the controller 8 controls the electromagnetic core to be disconnected and connected into the high-frequency power supply, the high-frequency electromagnetic field generated by the electromagnetic core is demagnetized, the fan is driven to overcome the electromagnetic force of the lifting of the weight of the fan, and the fan falls back to the initial height along the guide structure by means of the gravity of the fan. In this embodiment, the guide structure may be a guide rail, a guide post, or the like.
In the present embodiment, the plurality of vent holes 41 are uniformly and radially distributed at the same height along the circumferential direction of the baffle ring 4. In other embodiments, at least two sets of vent holes 41 may be disposed at intervals along the axial direction of the baffle ring 4, and each set of vent holes 41 includes a plurality of vent holes 41 uniformly and radially distributed at the same height along the circumferential direction of the baffle ring 4.
In one embodiment, further comprising: locate the air-out end at water conservancy diversion circle 4 top and cover the dust screen panel 5 of the air outlet of fan, this dust screen panel 5 is preferred to adopt buckle structure detachably to connect in water conservancy diversion 4 tops, also can adopt threaded fastener detachably such as screw, bolt to connect in water conservancy diversion 4 tops.
In a preferred embodiment, the motor 31 of the blower is a brushless dc motor 31.
As a preferred embodiment, the fan blade 32 of the fan is an axial flow fan blade 32, the flow guide ring 4 is in an annular structure, and the diameter of the fan blade 32 is smaller than the inner diameter of the flow guide ring 4.
The utility model also provides an air conditioner, this air conditioner has adopted foretell fan structure. As a preferred embodiment, the air conditioner adopts an air conditioner module machine, which comprises a unit consisting of a heat exchanger, an air duct and a fan, and the unit adopts the fan structure. In this embodiment, the unit is an outdoor unit, and the air conditioning module unit includes a reversing valve, so that the air conditioning module unit is a heat pump system in which the corresponding heat exchangers of the indoor unit and the outdoor unit can be switched between the condenser and the evaporator (when the heat exchanger of the indoor unit is the condenser, the heat exchanger of the outdoor unit is the evaporator, and when the heat exchanger of the indoor unit is the evaporator, the heat exchanger of the outdoor unit is the condenser).
In the present embodiment, the pressure detection device includes: the pressure sensor is arranged on the inner side (one side in the air duct) of the heat exchanger fin at the air inlet end of the air duct of the unit below the fan; the controller 8 is correspondingly and electrically connected with the pressure sensor and the lifting device; the air inlet pressure is the pressure of the air environment inside the fins of the heat exchanger at the air inlet end measured by the pressure sensor, and the ambient atmospheric pressure outside the heat exchanger (the side of the heat exchanger fins outside the air duct) is unchanged, and the air duct communicated with the fan inside the heat exchanger at the inner side of the heat exchanger fins under the defrosting condition is in a state of static pressure reduction and pressure increase (negative pressure absolute value increase), so the pressure value measured by the pressure sensor at the inner side of the heat exchanger fins can reflect the pressure difference of the heat exchanger, the air duct and the inner side and the outer side of the unit.
In this embodiment, the air inlet of the hydraulic cylinder 2 is communicated with the exhaust pipe of the compressor 9 of the heat exchanger unit through the air inlet pipe 6, the air outlet of the hydraulic cylinder 2 is communicated with the air suction pipe of the compressor 9 through the air outlet pipe 7, the air inlet pipe 6 and the air outlet pipe 7 are respectively and correspondingly provided with an air inlet pipe 6 electronic expansion valve and an air outlet pipe 7 electronic expansion valve, and the air inlet pipe 6 electronic expansion valve and the air outlet pipe 7 electronic expansion valve are respectively connected with the controller 8 through the signal transmission line 81. When the pressure difference is smaller than the preset threshold value, the controller 8 controls the electronic expansion valve of the air outlet pipe 7 to be opened and the electronic expansion valve of the air inlet pipe 6 to be closed, compressed air flows into the compressor 9 from the hydraulic cylinder 2 through the air outlet pipe 7 and the air suction pipe of the compressor 9, the hydraulic rod 21 drives the fan to fall back to the initial height, and the controller 8 controls the electronic expansion valve of the air outlet pipe 7 to be closed.
The utility model provides an air conditioner uses above-mentioned fan structure to carry out the logic control that ventilates includes following step:
the pressure detection device continuously detects the air inlet pressure P1 of the fan in the heat exchanger through the pressure sensor, converts the pressure P1 into an electric signal I1 and sends the electric signal I1 to the controller 8; the controller 8 judges whether the absolute value of the electric signal I1 is greater than a preset value I0; if I1 is larger than I0, the outdoor heat exchanger unit is judged to be in a low-temperature environment defrosting condition, at the moment, the frost forming gaps among fins of the heat exchanger of the unit become small, the ventilation resistance of a lower air inlet of the unit is increased, heat exchange is weakened, even the whole lower air inlet is blocked, the internal static pressure of the unit is reduced, the absolute value of the pressure difference I1 between the inside and the outside of the unit is larger than a preset value I0, and the fan motor 31 is in a high-load and high-heating state.
At this time, the controller 8 analyzes and processes the electric signal I1 to calculate a stroke H1 of the lifting device matching the hydraulic rod 21 with the I1, and generates a corresponding control signal according to the stroke H1 to control the lifting device to drive the fan to move from the initial height of the fan blade 32 lower than the ventilation hole 41 of the flow guiding ring to the ventilation height of the ventilation hole 41, so that the inside of the unit is ventilated with the external environment through the ventilation hole 41, at this time, the motor 31 of the fan realizes heat dissipation and cooling due to the ventilation effect of the ventilation hole 41, meanwhile, the ventilation of the ventilation hole 41 improves the internal static pressure of the unit, reduces the pressure difference I1 between the inside and the outside of the unit, the resistance load of the fan motor 31 tends to be gently reduced, the current and the heat generation of the motor 31 are further reduced and gradually stabilized, thereby ensuring that the fan motor 31 of the fan recovers to normal and stable operation under the low-temperature environment defrosting condition to avoid shutdown due to the over-protection, and improving the fan and heat exchange efficiency and reducing the energy consumption under the over-flow condition, thereby protecting the fan and the unit and improving the service life of the heat exchanger and the air-conditioning module.
If I1 is less than or equal to I0, the defrosting operation of the unit is judged to be finished at the moment, and the pressure difference between the inside and the outside of the unit is recovered to a specified value meeting the normal working condition, and the controller 8 generates a corresponding control signal to control the lifting device to drive the fan to fall back to the initial height.
In this embodiment, the lifting device is a hydraulic device, if I1 is greater than I0, that is, when the intake air pressure is greater than the preset threshold, the controller 8 controls the opening of the electronic expansion valve of the intake pipe 6 and the closing of the electronic expansion valve of the exhaust pipe 7 at the same time, high-temperature and high-pressure gas flows into the hydraulic cylinder 2 from the compressor 9 through the exhaust pipe of the compressor 9 and the intake pipe 6, so that the hydraulic rod 21 jacks up the fan to the lifting height H1, and the controller 8 controls the closing of the electronic expansion valve of the intake pipe 6 to keep the fan at the lifting height; if I1 is less than or equal to I0, the controller 8 controls the electronic expansion valve of the air inlet pipe 6 to be closed and the electronic expansion valve of the air outlet pipe 7 to be opened simultaneously, high-temperature and high-pressure gas flows into the compressor 9 from the hydraulic cylinder 2 through the air outlet pipe 7 and the air suction pipe of the compressor 9, so that the hydraulic rod 21 drives the fan to fall back to the initial height, and the controller 8 controls the electronic expansion valve of the air outlet pipe 7 to be closed.
In one embodiment, the hydraulic device can be replaced by a mechanical lifting device such as a crank connecting rod, an eccentric wheel mechanism and the like which are arranged on the rack 1 and connected between the rack 1 and the fan, if I1 is larger than I0, the controller 8 generates a corresponding control signal according to the stroke H1 to control the driving motor to drive the crank connecting rod or the eccentric wheel mechanism to drive the fan to lift from the initial height to the ventilation height from H1, and the controller 8 controls the driving motor to stop rotating to keep the fan at the ventilation height; if I1 is less than or equal to I0, the controller 8 generates a corresponding control signal to control the driving motor to drive the crank connecting rod or the eccentric wheel mechanism to drive the fan to fall back to the initial height, and the controller 8 controls the driving motor to stop rotating to keep the fan at the initial height.
In another embodiment, the hydraulic device may adopt an electromagnetic core disposed on the rack 1 and below the fan, if I1 is greater than I0, the controller 8 generates a corresponding control signal according to the stroke H1 to control the electromagnetic core to be electrified to generate a high-frequency electromagnetic field with a certain intensity, the fan is made of a magnetic material which can be influenced by the magnetic field generated by the electrification of the electromagnetic core, and the fan induces a high-frequency eddy current on the surface of the magnetic material of the fan in the action range of the high-frequency electromagnetic field generated by the electrification of the electromagnetic core, and the fan is made to be acted by a lorentz force through the interaction of the high-frequency eddy current and the high-frequency electromagnetic field generated by the electrification of the electromagnetic core, the lorentz force direction is opposite to the gravity direction of the fan under the guidance of a guide structure disposed on the rack 1, and the initial lorentz force is greater than the gravity to enable the fan to ascend, and when the fan blade 32 of the fan ascends from the stroke H1 to the ventilation height from the initial height, the controller 8 controls and changes the power of the high-frequency power supply of the electromagnetic core to enable the lorentz force to be reduced to be equal to the gravity, so that the electromagnetic suspension fan at the height of H1 can be realized; if I1 is less than or equal to I0, the controller 8 generates a corresponding control signal to control the power-off demagnetization of the electromagnetic iron core, so that the fan falls back to the initial height under the action of the gravity of the fan and the guidance of the guide structure.
The utility model provides a fan structure, air conditioning module machine and heat exchanger ventilation control method have improved the life of fan under the abominable frost condition greatly, have guaranteed the stability of the normal work of unit simultaneously, can reduce the service coefficient of motor design at fan design stage, improve motor efficiency, save the heat radiation structure raw and other materials consumption that the fan motor made the use, are particularly suitable for the fan of air conditioning module machine outdoor unit frost condition in winter. The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (14)
1. A fan structure, comprising:
the fan is located the air outlet department of fan and all sides and is equipped with the water conservancy diversion circle in at least one ventilation hole, is used for the drive the fan is followed the elevating gear that the axial of water conservancy diversion circle goes up and down is used for detecting the pressure measurement of fan air inlet pressure controls when fan air inlet pressure is greater than and predetermines the threshold value elevating gear drive the fan rises to being located along the axial direction of water conservancy diversion circle the controller of the top in ventilation hole.
2. The fan structure of claim 1, wherein the controller controls the lifting device to drive the fan to fall back below the vent hole along an axial direction of the deflector ring when the inlet air pressure of the fan is less than or equal to a preset threshold.
3. The fan structure of claim 1 wherein the pressure detection device converts the detected fan inlet air pressure into an electrical signal and sends the electrical signal to the controller.
4. The fan structure of any of claims 1-3, characterized in that the lifting device is a hydraulic device.
5. The fan structure of claim 4, wherein the hydraulic device comprises:
at least one hydraulic cylinder;
the hydraulic rod is arranged between the hydraulic cylinder and the bottom of the fan, changes the distance between the hydraulic cylinder and the hydraulic rod along with the pressure change of the corresponding hydraulic cylinder, and drives the bottom of the fan to ascend or descend relative to the hydraulic cylinder;
the pressure inlet pipeline is provided with a first valve and is connected with an inlet of the hydraulic cylinder;
and the pressure outlet pipeline is provided with a second valve and is connected with the outlet of the hydraulic cylinder.
6. The fan structure of claim 5, wherein the controller controls the distance between the hydraulic rods and the corresponding hydraulic cylinders by controlling the first and second valves, thereby controlling the ascending or descending stroke of the fan.
7. The fan structure according to claim 5, wherein the hydraulic means includes four hydraulic cylinders, each of which is connected to one of the hydraulic rods, and the motor peripheral sides of the fan are respectively mounted on the corresponding hydraulic rods of the four hydraulic cylinders.
8. The fan structure according to any one of claims 1 to 3,
the lifting device adopts an eccentric wheel device.
9. The fan structure according to any one of claims 1 to 3,
the lifting device adopts a magnetic suspension device.
10. The fan structure according to claim 1, wherein when the number of the vent holes is plural, the plural vent holes are uniformly distributed along a circumferential direction of the baffle ring at the same height.
11. An air conditioner characterized in that the air conditioner employs the fan structure of any one of claims 1 to 10.
12. The air conditioner according to claim 11, wherein when the lifting device adopts a hydraulic device, an inlet of a hydraulic cylinder of the hydraulic device is communicated with an exhaust pipe of a compressor of the air conditioner through a pressure inlet pipeline, an outlet of the hydraulic cylinder of the hydraulic device is communicated with a suction pipe of the compressor through a pressure outlet pipeline, and the pressure inlet pipeline and the pressure outlet pipeline are respectively provided with a first valve and a second valve.
13. The air conditioner according to claim 12, wherein the pressure detecting means employs a pressure sensor provided inside a fin of a heat exchanger of the air conditioner, the pressure sensor is electrically connected to the controller, and the first valve and the second valve employ a first electromagnetic expansion valve and a second electromagnetic expansion valve, respectively, the first electromagnetic expansion valve and the second electromagnetic expansion valve being electrically connected to the controller through signal transmission lines, respectively.
14. The air conditioner of claim 11, wherein the air conditioner comprises an air conditioning module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221737241.0U CN217763683U (en) | 2022-07-05 | 2022-07-05 | Fan structure and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221737241.0U CN217763683U (en) | 2022-07-05 | 2022-07-05 | Fan structure and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217763683U true CN217763683U (en) | 2022-11-08 |
Family
ID=83871883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221737241.0U Active CN217763683U (en) | 2022-07-05 | 2022-07-05 | Fan structure and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217763683U (en) |
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2022
- 2022-07-05 CN CN202221737241.0U patent/CN217763683U/en active Active
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