CN114060310B - Centrifugal fan blade, integrated air conditioner comprising same and control method - Google Patents
Centrifugal fan blade, integrated air conditioner comprising same and control method Download PDFInfo
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- CN114060310B CN114060310B CN202111342572.4A CN202111342572A CN114060310B CN 114060310 B CN114060310 B CN 114060310B CN 202111342572 A CN202111342572 A CN 202111342572A CN 114060310 B CN114060310 B CN 114060310B
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- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- 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
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- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
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- 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
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/03—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by mounting arrangements
- F24F1/031—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by mounting arrangements penetrating a wall or window
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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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)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal fan blade, an integrated air conditioner comprising the same and a control method. The centrifugal fan blade includes: the fan blade body comprises a back plate and blades, and the blades are uniformly distributed on the edge of the back plate along the circumferential direction of the back plate; the temperature control assembly comprises a heating device, and the heating device is arranged on the back plate. According to the invention, the temperature control assembly is arranged on the centrifugal fan blade, so that heating can be started when the air conditioner reaches the condensation prevention condition, and the temperature around the centrifugal fan blade is raised, so that water drops can not be generated by the centrifugal fan blade due to air leakage or uneven shunting, the water leakage condition of the air conditioner is avoided, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of integrated air conditioners, in particular to a centrifugal fan blade, an integrated air conditioner comprising the centrifugal fan blade and a control method.
Background
An air conditioner, i.e., an air conditioner, is an apparatus for manually adjusting and controlling parameters such as temperature, humidity, and flow rate of air in an interior of a building or a structure. With the development and progress of society and science and technology, daily electric products which are beneficial to thousands of households are also emerging, and the problems existing in the use process are gradually exposed, wherein one problem is that the air conditioner is easy to generate condensation in an indoor unit when running in a high-humidity environment. When the air conditioner is in a refrigeration mode, the temperature of an indoor heat exchanger is far lower than the dew point temperature of air, condensation is easily generated, namely, water is easily condensed and drips on the surface of an air conditioner structural member, and a large amount of water drops are generated on a fan blade under the condition of air leakage or uneven distribution in the design of the air conditioner, and are blown out of the air conditioner along with the rotation of the fan blade, so that the user experience is influenced; and the compressor of the air conditioner can operate in a frequency reduction mode under the condensation working condition, and the performance of the air conditioner can be influenced.
For a split air conditioner, the problem of condensation of an indoor side heat exchanger is effectively solved, most air conditioner products are additionally provided with a condensation prevention function, the condensation amount is inhibited or even the condensation is eliminated by starting the condensation prevention function when the condensation problem occurs to the air conditioner, but the condensation prevention function additionally arranged by the air conditioner at the present stage is mostly acted on the split air conditioner under the limitation of factors such as structure and cost, and for an integral air conditioner (window machine), the condensation prevention method is still in a blank stage.
Disclosure of Invention
In view of this, the present invention provides a centrifugal fan blade, an integrated air conditioner including the same, and a control method, which are used to at least solve the technical problem that the integrated air conditioner in the prior art does not have a condensation prevention function, and specifically:
in a first aspect, the present invention provides a centrifugal fan blade, comprising:
the fan blade comprises a fan blade body, a fan blade body and a fan blade, wherein the fan blade body comprises a back plate and blades, and the blades are uniformly distributed on the edge of the back plate along the circumferential direction of the back plate;
the temperature control assembly comprises a heating device, and the heating device is arranged on the back plate.
Further optionally, the heating device is a circular ring structure, and is arranged around the center of the back plate,
the back plate is provided with a fixing structure for fixing the heating device.
Further optionally, the fixing structure includes a fixing groove, the fixing groove is a circular ring groove and is disposed around the center of the back plate, and the heating device is embedded in the fixing groove.
Further optionally, two annular limiting convex ribs with different radial sizes are arranged on the back plate, the two limiting convex ribs are concentrically arranged, and the fixing groove is formed between the two limiting convex ribs.
Further optionally, the fixing structure further comprises a fixing snap ring, the fixing snap ring is arranged on the opening of the fixing groove and is fixedly connected with the two limiting convex ribs,
the fixed snap ring is along the circumference of fixed slot sets up a plurality ofly.
Further optionally, the temperature control assembly further comprises a detection device, and the detection device is arranged on the back plate and used for detecting temperature and humidity.
Further optionally, the detection device is a temperature and humidity detection device, and the temperature and humidity detection device is disposed inside the heating device and near the center of the back plate.
In a second aspect, the invention provides an integrated air conditioner, which comprises the centrifugal fan blade.
In a third aspect, the present invention provides a method for controlling an integrated air conditioner, where the integrated air conditioner includes a centrifugal blade, and the centrifugal blade includes: the fan blade comprises a fan blade body, a fan blade body and a fan blade, wherein the fan blade body comprises a back plate and blades, and the blades are uniformly distributed on the edge of the back plate along the circumferential direction of the back plate;
the temperature control assembly is arranged on the back plate and comprises a heating device and a detection device, and the detection device is used for detecting real-time temperature and real-time humidity;
the control method comprises the following steps:
the air conditioner is started up and the air conditioner is started up,
acquiring the real-time temperature and real-time humidity values,
when the real-time temperature value is larger than the condensation threshold value, controlling the heating device to operate and continuously acquiring the real-time temperature value and the real-time humidity value,
and when the real-time temperature value is greater than the temperature threshold value, or the real-time humidity threshold value is smaller than the condensation threshold value, controlling the heating device to be closed.
Further optionally, after the heating device is started and a first operation time interval is set, the real-time temperature and the real-time humidity value are detected.
According to the invention, the temperature control assembly is arranged on the centrifugal fan blade, so that heating can be started when the air conditioner reaches the condensation prevention condition, and the temperature around the centrifugal fan blade is raised, so that water drops can not be generated by the centrifugal fan blade due to air leakage or uneven shunting, the water leakage condition of the air conditioner is avoided, and the user experience is improved.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 shows a schematic structural diagram of a centrifugal fan blade according to an embodiment of the present invention;
fig. 2 is a partially sectional view schematically illustrating an integrated air conditioner according to an embodiment of the present invention.
In the figure:
1. a fan blade body; 11. a back plate; 12. blades, 13, a heating device; 14. limiting convex ribs; 15. fixing the snap ring; 16. a detection device; 2. an integrated air conditioner; 21. an evaporator; 22. and (7) an air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two, but does not exclude the presence of at least one.
It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or system comprising the element.
The air conditioner is under the refrigeration mode, and indoor heat exchanger temperature is less than the dew point temperature of air far away, very easily produces the condensation, very easily on air conditioner structure surface condensate water and drip promptly, influences user experience. However, most of the condensation preventing functions added to part of the air conditioners at the present stage are applied to the split air conditioners, and for the integrated air conditioners (window air conditioners), the condensation preventing method is still in a blank stage. In order to make up for the shortage of a condensation preventing method for an integrated air conditioner (window machine) compared with a split machine, the invention provides a condensation preventing method for an integrated machine (window machine), and the problem of condensation of the integrated machine is effectively solved.
According to the invention, the temperature control assembly is arranged on the centrifugal fan blade of the integral air conditioner (window machine), so that heating can be started when the air conditioner reaches the anti-condensation condition, the temperature around the centrifugal fan blade is raised, water drops cannot be generated by the centrifugal fan blade due to air leakage or uneven shunting, and the condition of water leakage of the air conditioner is avoided. Simultaneously, prevent being provided with two feedback device of temperature, humidity under the condensation mode, can remind the process that the condensation mode was prevented to the customer with accomplish at corresponding time node to avoid the customer to open for a long time and prevent the condensation mode, bring improper experience. The brand new annular heating device greatly reduces the complexity of assembly; and saves space for installation. The invention is described in detail below with reference to specific examples:
as shown in fig. 1, the present invention provides a centrifugal fan blade, comprising:
the fan blade comprises a fan blade body 1, wherein the fan blade body 1 comprises a back plate 11 and blades 12, and the blades 12 are uniformly distributed on the edge of the back plate 11 along the circumferential direction of the back plate 11;
the temperature control assembly comprises a heating device 13, and the heating device 13 is arranged on the back plate 11 and used for heating air near the fan blades so as to reduce the air humidity near the fan blades and avoid or reduce condensation.
Specifically, in this embodiment, the heating device 13 is a circular ring-shaped structure and is disposed around the center of the back plate 11, and the back plate 11 is provided with a fixing structure for fixing the heating device 13, and preferably, the center of the circle of the heating device 13 is located on the central axis of the back plate 11, so as to avoid the setting of the heating device 13 from affecting the balance of the fan blade body 1. Preferably, the heating device 13 is an electric heating wire or other device capable of heating.
Preferably, the fixing structure includes a fixing groove, which is a circular groove disposed around the center of the back plate 11, and the heating device 13 is inserted into the fixing groove. In this embodiment, two annular limiting ribs 14 with different radial dimensions are arranged on the back plate 11, the two limiting ribs 14 are concentrically arranged, and a fixing groove is formed between the two limiting ribs 14. Further, fixed knot constructs still including fixed snap ring 15, fixed snap ring 15 sets up on the opening of fixed slot to with two spacing protruding muscle 14 fixed connection, fixed snap ring 15 avoids heating device 13 to drop from the fixed slot, and fixed snap ring 15 sets up a plurality ofly along the circumference of fixed slot, avoids causing the influence to the dynamic balance of centrifugal fan blade.
Preferably, in other embodiments, the fixing structure may also be provided as a plurality of snaps evenly distributed along the same circumference, by which the heating device 13 is fixed.
The temperature control assembly further comprises a detection device 16, the detection device 16 is disposed on the back plate 11 and is used for detecting temperature and humidity, and specifically, the detection device 16 is a temperature and humidity detection device, for example, a temperature and humidity detection sensor. The temperature and humidity detection device is arranged on the inner side of the heating device 13 and close to the center of the back plate 11, so that the influence of the arrangement of the temperature and humidity detection device on the operation action balance of the fan is reduced.
Preferably, an annular power supply contact is arranged on the rear side wall of the back plate 11, the power supply contact is electrically connected with the heating device 13 and the detection device 16, the power supply contact can be in slidable contact with a power supply brush fixedly arranged on the motor or other components, and the power supply brush is connected with a power supply to supply power to the heating device 13 and the detection device 16.
Or, an induction coil may be disposed on the rear side wall of the back plate 11, a permanent magnet is disposed on the motor or other structures, and when the centrifugal fan blade rotates, the coil is driven to rotate to cut the magnetic induction lines of the permanent magnet to generate induced current to supply power to the heating device 13 and the detection device 16.
As shown in fig. 2, the present invention provides an integrated air conditioner 2, which comprises the centrifugal fan blade, the centrifugal fan blade is arranged on a motor, preferably, the integrated air conditioner 2 is a window type air conditioner, and further comprises a refrigeration system and a controller, the refrigeration system comprises a compressor, a condenser and an evaporator 21, the evaporator 21 is arranged at the front side of the centrifugal fan blade, and air is blown out from an air outlet 22 through the centrifugal fan after heat exchange by the evaporator 21. The controller is used for controlling the operation of temperature control assembly and refrigerating system. The control method of the integrated air conditioner 2 includes:
the air conditioner is started up and the air conditioner is started up,
acquiring real-time temperature and real-time humidity values,
when the real-time temperature value is larger than the condensation threshold value, the heating device 13 is controlled to operate, and the real-time temperature value and the real-time humidity value are continuously obtained,
and when the real-time temperature value is greater than the temperature threshold value, or the real-time humidity threshold value is smaller than the condensation threshold value, controlling the heating device 13 to be closed.
After the heating device 13 is started, the detection of the real-time temperature and the real-time humidity value is started after a first operation time interval.
In particular, the amount of the solvent to be used,
when the user turns on the air conditioner, the detection device 16 and the centrifugal fan start to operate (the refrigeration system also operates). When the air conditioner is turned on for a certain period of time, the detection device 16 starts to detect the implementation temperature q and the implementation humidity T around the centrifugal fan blade Fruit of Chinese wolfberry . Meanwhile, the preset temperature threshold is T Domain(s) The dew humidity value is Q.
When Q is larger than or equal to Q, the detection device 16 will feed back a signal to the controller to control the on-state of the heating device 13. When the detecting device 16 detects T Fruit of Chinese wolfberry ≤T Domain When Q is larger than or equal to Q, the heating device 13 is continuously opened for a period of time t2, and the temperature around the centrifugal fan blade is continuously increased within the time t2 (assuming that the temperature does not affect the refrigerating capacity or has little influence on the refrigerating capacity), and at this time, the humidity around the centrifugal fan blade is reduced due to the increase of the ambient temperature, so that the generation of condensation is effectively prevented. After t2 is finished, the detection device 16 starts to detect the temperature around the centrifugal fan blade again at this moment; when T is Fruit of Chinese wolfberry ≤T Domain When Q is less than Q, the detection device 16 feeds back a signal to the controller at the moment, and the condensation preventing operation is finished, so that the heating device 13 is closed, and excessive temperature rise is prevented; when the detecting device 16 detects T Fruit of Chinese wolfberry ＞T Domain In the process, the detection device 16 feeds back a signal to the controller, immediately drives the heating device 13 to be turned off, avoids the influence of overhigh temperature rise on the refrigeration effect of the air conditioner, and starts the heating device 13 again after the temperature is reduced.
Further, when the heating device 13 is started to prevent condensation, the power of the compressor can be synchronously reduced, so that the efficiency and the effect of preventing condensation are further improved.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the disclosure is not limited to the precise construction, arrangements, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. The utility model provides a centrifugal fan blade for integral type air conditioner which characterized in that includes:
the fan blade comprises a fan blade body, a fan blade body and a fan blade, wherein the fan blade body comprises a back plate and blades, and the blades are uniformly distributed on the edge of the back plate along the circumferential direction of the back plate;
the temperature control assembly comprises a heating device, and the heating device is arranged on the back plate;
the temperature control assembly further comprises a detection device, and the detection device is arranged on the back plate and used for detecting the temperature and the humidity around the centrifugal fan blade;
the temperature control assembly is configured to: when the air conditioner is started, acquiring a real-time temperature value and a real-time humidity value around the centrifugal fan blade, and when the real-time temperature value is less than or equal to a temperature threshold value and the real-time humidity value is greater than or equal to a condensation threshold value, controlling the heating device to operate; and when the real-time temperature value is greater than the temperature threshold value or the real-time humidity is smaller than the condensation threshold value, the heating device is controlled to be closed.
2. The centrifugal fan blade according to claim 1, wherein the heating device is a circular ring-shaped structure and is disposed around the center of the back plate, and a fixing structure is disposed on the back plate and used for fixing the heating device.
3. The centrifugal fan blade of claim 2 wherein the fixing structure comprises a retaining groove that is an annular groove disposed about the center of the back plate, the heating device being embedded in the retaining groove.
4. The centrifugal fan blade according to claim 3, wherein the back plate is provided with two annular limiting ribs having different radial dimensions, the two limiting ribs are concentrically arranged, and the fixing groove is formed between the two limiting ribs.
5. The centrifugal fan blade according to claim 4, wherein the fixing structure further comprises a fixing snap ring, the fixing snap ring is arranged on the opening of the fixing groove and is fixedly connected with the two limiting convex ribs,
the fixing snap ring is arranged along the circumferential direction of the fixing groove in a plurality.
6. The centrifugal fan blade according to claim 1, wherein the detection device is a temperature and humidity detection device, and the temperature and humidity detection device is arranged inside the heating device and near the center of the back plate.
7. An integrated air conditioner, characterized in that, comprises the centrifugal fan blade of any one of claims 1-6.
8. The control method of the integrated air conditioner is characterized in that the integrated air conditioner comprises a centrifugal fan blade, and the centrifugal fan blade comprises: the fan blade comprises a fan blade body, a fan blade body and a fan blade, wherein the fan blade body comprises a back plate and blades, and the blades are uniformly distributed on the edge of the back plate along the circumferential direction of the back plate;
the temperature control assembly is arranged on the back plate and comprises a heating device and a detection device, and the detection device is used for detecting real-time temperature and real-time humidity;
the control method comprises the following steps:
the air conditioner is started up and the air conditioner is started up,
acquiring the real-time temperature and real-time humidity values,
when the real-time temperature value is less than or equal to the temperature threshold value and the real-time humidity value is greater than or equal to the condensation threshold value, controlling the heating device to operate and continuously acquiring the real-time temperature value and the real-time humidity value,
and when the real-time temperature value is greater than a temperature threshold value, or the real-time humidity is less than a condensation threshold value, controlling the heating device to be closed.
9. The control method of claim 8, wherein the real-time temperature and the real-time humidity values are detected after a first operating time interval after the heating device is activated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111342572.4A CN114060310B (en) | 2021-11-12 | 2021-11-12 | Centrifugal fan blade, integrated air conditioner comprising same and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111342572.4A CN114060310B (en) | 2021-11-12 | 2021-11-12 | Centrifugal fan blade, integrated air conditioner comprising same and control method |
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| CN114060310A CN114060310A (en) | 2022-02-18 |
| CN114060310B true CN114060310B (en) | 2022-12-16 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06109304A (en) * | 1992-09-24 | 1994-04-19 | Matsushita Seiko Co Ltd | Ventilating fan for duct |
| JP4234164B2 (en) * | 2006-09-08 | 2009-03-04 | 三菱電機株式会社 | Air conditioner |
| WO2016170880A1 (en) * | 2015-04-20 | 2016-10-27 | 株式会社デンソー | Ventilation device |
| DE102017210527B4 (en) * | 2017-06-22 | 2021-01-14 | E.G.O. Elektro-Gerätebau GmbH | Pump for an electrical device and electrical device with a fluid guide and such a pump |
| CN109185978A (en) * | 2018-09-11 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of fan blade component, indoor unit and air conditioner |
| CN109373454A (en) * | 2018-11-22 | 2019-02-22 | 珠海格力电器股份有限公司 | A kind of air-conditioning draught fan |
| CN111140926B (en) * | 2019-12-23 | 2021-09-24 | 格力电器（杭州）有限公司 | Anti-condensation and anti-dripping cross-flow fan blade structure, control method and air conditioner |
| CN211230976U (en) * | 2019-12-24 | 2020-08-11 | 浙江天喜厨电股份有限公司 | Centrifugal type heated air circulation fan |
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