CN111255725B - Cooling and heating fan and control method thereof - Google Patents
Cooling and heating fan and control method thereof Download PDFInfo
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- CN111255725B CN111255725B CN202010134554.6A CN202010134554A CN111255725B CN 111255725 B CN111255725 B CN 111255725B CN 202010134554 A CN202010134554 A CN 202010134554A CN 111255725 B CN111255725 B CN 111255725B
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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
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a cooling and heating fan and a control method thereof, wherein the cooling and heating fan comprises a main body and an air outlet duct; the air guide assembly is controlled to be in an opening state for communicating the air outlet duct with the external environment or a closing state for disconnecting the air outlet duct from the external environment; the heating assembly is controlled to be positioned at a heating position intersected with the air outlet duct or a heating stopping position far away from the air outlet duct; when the cooling and heating fan is in a starting state, the air guide assembly is in an opening state; when the cooling and heating fan is switched from the on state to the off state, the air guide assembly is switched from the on state to the off state according to the position of the heating assembly. According to the cooling and heating fan, the working state of the air guide assembly can be controlled according to the position of the heating assembly, so that the heating assembly is prevented from being damaged in the process of sale and transportation due to the fact that the heating assembly does not return to the heating stop position in time after the cooling and heating fan is switched to the shutdown state and the air guide assembly is in the closed state, and the increase of after-sale complaints and the increase of the transportation cost are effectively avoided.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a cooling and heating fan and a control method thereof.
Background
Along with the improvement of society and the improvement of scientific and technical level, the requirements of people on living environment are gradually improved, and household appliances with various functions bring great improvement to the living environment of people. The fan is widely applied to household appliances, and can bring coolness to people in hot summer. However, in cold winter, the fan cannot be used and is in an idle state, so that the fan occupies a living space and brings inconvenience to the life of people. Therefore, the cooling and heating fan which can simultaneously realize two functions of hot air conveying and cold air conveying is produced. The cold and warm fan is also called as convection fan, which is a stereo exchange system formed by indoor and outdoor air according to the air flow principle, and is gradually popular with people due to the characteristics of having two functions of heating and cooling.
Some existing cooling and heating fans have a movable PCT heating assembly that is movable between a heating position and a heating-off position. When the cold and warm fan is in a heating mode and the PCT heating assembly is in a heating position, the air flow flowing out of the cold and warm fan is heated by the PCT heating assembly, and the temperature of the air flow rises. When the cold and warm fan is in a cooling mode, the PCT heating assembly is in a heating stop position, and air flow flowing out of the cold and warm fan is kept at normal temperature without passing through the PCT heating assembly.
However, in the production test connection stage of the cooling and heating fan, the whole machine state is usually checked by starting up the fan. When the cooling and heating fan is turned off, the air guide assembly of the cooling and heating fan is completely closed, but the PCT heating assembly is still in the moving process from the heating position to the heating stop position, so that a detector can not accurately judge the position of the PCT heating assembly easily and directly cut off the power supply of the cooling and heating fan, the PCT heating assembly cannot return to the heating stop position, and the PCT heating assembly is damaged in the transportation process.
Disclosure of Invention
Therefore, it is necessary to provide a cooling and heating fan and a control method thereof, which can prevent a heating element from being damaged during transportation due to the fact that the heating element cannot return to a heating stop position, in order to solve the problem that a detection person cannot accurately determine the accurate position of the heating element of the cooling and heating fan during shutdown.
A cooling and heating fan comprising:
the main body comprises an air outlet duct;
the air guide assembly is arranged on the main body and is controlled to be in an open state for communicating the air outlet duct with the external environment or a closed state for disconnecting the air outlet duct from the external environment; and
the heating assembly is arranged on the main body and is controlled to be positioned at a heating position intersected with the air outlet duct or a heating stopping position far away from the air outlet duct;
when the cooling and heating fan is in a starting state, the air guide assembly is in an opening state; when the cooling and heating fan is switched from the on state to the off state, the air guide assembly is switched from the on state to the off state according to the position of the heating assembly.
According to the cooling and heating fan, the working state of the air guide assembly can be controlled according to the position of the heating assembly, so that the heating assembly is prevented from being damaged in the process of sale and transportation due to the fact that the heating assembly does not return to the heating stop position in time after the cooling and heating fan is switched to the shutdown state and the air guide assembly is in the closed state, and increase of after-sale complaints and increase of transportation, production and sale costs are effectively avoided.
In one embodiment, when the heating component is located at the heating stop position, the air guide component is immediately switched from the open state to the closed state;
when the heating assembly is located at the heating position, the air guide assembly is switched to the closed state from the opening state in a delayed mode.
In one embodiment, the cooling and heating fan comprises a position detection module, and the position detection module is used for acquiring the position of the heating assembly.
In one embodiment, the cooling and heating fan further comprises a control module, the control module is electrically connected to the detection module, the air guide assembly and the heating assembly respectively, and the control module is used for controlling the working states of the air guide assembly and the heating assembly according to the position of the heating assembly.
A control method of the cooling and heating fan comprises the following steps:
acquiring the working state of the cooling and heating fan;
when the cooling and heating fan is switched from a starting state to a shutdown state, acquiring the position of a heating assembly;
and controlling the air guide assembly to be switched from an open state to a closed state according to the position of the heating assembly.
In one embodiment, the step of controlling the air guide assembly to switch from the open state to the closed state according to the position of the heating assembly specifically includes the following steps:
when the heating assembly is judged to be located at the heating stop position, controlling the air guide assembly to be immediately switched from the opening state to the closing state;
and when the heating assembly is judged to be positioned at the heating position, the air guide assembly is controlled to be switched from the opening state to the closing state in a delayed mode.
In one embodiment, the step of controlling the air guiding assembly to switch from the open state to the closed state in a delayed manner comprises the following steps:
continuously judging the position of the heating assembly;
and after the heating assembly is judged to be switched from the heating position to the heating stopping position, controlling the air guide assembly to be switched from the opening state to the closing state.
In one embodiment, the step of controlling the air guide assembly to switch from the open state to the closed state in a delayed manner specifically includes the following steps:
and after the cooling and heating fan is switched from the on state to the off state for a first preset time, controlling the air guide assembly to be switched from the on state to the off state.
In one embodiment, the step of controlling the air guide assembly to switch from the open state to the closed state in a delayed manner specifically includes the following steps:
after the cooling and heating fan is switched from the on state to the off state for a second preset time, continuously judging the position of the heating assembly;
and after the heating assembly is judged to be at the heating stopping position, controlling the air guide assembly to be switched from the opening state to the closing state.
In one embodiment, the step of controlling the air guide assembly to switch from the open state to the closed state in a delayed manner specifically includes the following steps:
after the cooling and heating fan is switched to the off state for a second preset time, continuously judging the position of the heating assembly;
and judging the fault of the cooling and heating fan after judging that the heating assembly is still at the heating position.
In one embodiment, after the cooling and heating fan is judged to be in failure, the air guide assembly is controlled to be switched from the open state to the closed state.
Drawings
Fig. 1 is a schematic block diagram of a cooling and heating fan according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for controlling the cooling and heating fan shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a cooling and heating fan (not shown) according to an embodiment of the present invention has an off state and an on state, and can be in a cooling mode or a heating mode when the cooling and heating fan is in the on state. When the cooling and heating fan is in a cooling mode, the cooling and heating fan delivers normal-temperature airflow to reduce the sensible temperature of a user; when the cooling and heating fan is in a heating mode, the cooling and heating fan conveys high-temperature airflow to improve the sensible temperature of a user.
Specifically, the cooling and heating fan includes a main body, a wind guide assembly 20, and a heating assembly 40. The main body is columnar or other shapes and comprises an air inlet duct and an air outlet duct which are communicated with each other, and outside air can flow into the main body from the air inlet duct and then flows out from the air outlet duct to form airflow. The air guide assembly 20 is installed on the main body, the air guide assembly 20 is controlled to be in an open state for communicating the air outlet duct with the external environment or a closed state for disconnecting the air outlet duct from the external environment, and the air guide assembly 20 in the open state can guide the air flow. When the cooling and heating fan is turned on, the air guiding assembly 20 is in an open state to allow the airflow to flow from the air outlet duct into the external environment.
The heating assembly 40 is installed on the main body, and the heating assembly 40 is controlled to be located at a heating position intersected with the air outlet duct or a heating stop position far away from the air outlet duct. When the heating assembly 40 is located at the heating position, the airflow in the air outlet duct flows through the heating assembly 40, and flows out through the air guide assembly 20 after being heated by the heating assembly 40. When the heating assembly 40 is located at the heating stop position, the air flow in the air outlet duct directly flows out through the air guiding assembly 20.
When the cooling and heating fan is switched from the on state to the off state, the air guiding assembly 20 is controlled to be switched from the on state to the off state according to the position of the heating assembly 40.
Since the time length for switching the air guiding assembly 20 from the open state to the closed state is longer than the time length for moving the heating assembly 40 from the heating position to the heating stop position, if the air guiding assembly 20 is controlled to be switched from the open state to the closed state immediately after the cooling and heating fan is switched from the on state to the off state, it is likely that the heating assembly 40 is still located at the heating position after the air guiding assembly 20 is closed. If the power supply of the cooling and heating fan is cut off by a detection person who misjudges the position of the air guide assembly 20 due to the shielding of the air guide assembly 20, the heating assembly 40 is powered off and cannot be moved to the heating stop position, and the heating assembly 40 located at the heating position is easily damaged in the transportation process.
In the cooling and heating fan of the present application, the working state of the air guiding assembly 20 can be controlled according to the position of the heating assembly 40, so that when the cooling and heating fan is switched to the shutdown state, and the air guiding assembly 20 is in the closed state, the heating assembly 40 does not return to the heating stop position in time and is damaged in the process of sales and transportation, and the increase of after-sales complaints and the increase of transportation, production and sales costs are effectively avoided.
Further, the cooling and heating fan includes a position detection module 80 and a control module 60. The position detection module 80 is electrically connected to the control module 60, and the position detection module 80 is used for acquiring the position of the heating assembly 40 and sending the position to the control module 60. The control module 60 is electrically connected to the air guiding assembly 20 and the heating assembly 40, and the control module 60 is configured to control the operating states of the air guiding assembly 20 and the heating assembly 40 according to the position of the heating assembly 40.
As shown in fig. 1 and 2, the method for controlling the cooling and heating fan includes the following steps:
s110: and acquiring the working state of the cooling and heating fan.
Specifically, the control module 60 obtains the operating state of the cooling and heating fan. The cooling and heating fan can be in a starting state or a shutdown state, and can be in a cooling mode or a heating mode when the cooling and heating fan is in the starting state.
S120: when the cooling and heating fan is switched from the on state to the off state, the position of the heating element 40 is obtained.
Specifically, after the cooling and heating fan is turned off after the cooling and heating fan is turned on and checked by the inspector, the control module 60 obtains the state of the cooling and heating fan switched from the on state to the off state, and the position detecting module 80 obtains the position of the heating element 40.
S130: the air guide assembly 20 is controlled to be switched from the open state to the closed state according to the position of the heating assembly 40.
Specifically, when the control module 60 determines that the heating element 40 is located at the heating stop position, which indicates that the cooling and heating fan is in the cooling mode in the on state, the heating element 40 stays at the heating stop position all the time, so that the control module 60 controls the air guiding element 20 to immediately switch from the open state to the closed state without waiting for the movement of the heating element 40.
When the control module 60 determines that the heating element 40 is located at the heating position, it indicates that the cooling and heating fan is in the heating mode and stays at the heating position in the power-on state, so that the control module 60 controls the air guiding element 20 to be switched from the on state to the off state in a delayed manner to wait for the heating element 40 to move from the heating position to the heating stop position, thereby preventing the heating element 40 from being still located at the heating position after the air guiding element 20 is switched to the off state.
On the contrary, if the control module 60 determines that the heating assembly 40 is located at the heating position, the air guide assembly 20 is still immediately switched to the closed state, which will cause the detection personnel to fail to accurately determine the position of the heating assembly 40, and the power supply of the cooling and heating fan is turned off when the heating assembly 40 is still located at the heating position, so that the heating assembly 40 cannot move to the heating stop position and stays at the heating position all the time, and further is damaged in the transportation process.
In one embodiment, the step of controlling the air guiding assembly 20 to switch from the open state to the closed state in a delayed manner includes the following steps:
s1311: the position of the heating assembly 40 is continuously determined.
Specifically, the position detection module 80 continuously obtains the position of the heating assembly 40, and the control module 60 continuously determines the position of the heating assembly 40, so as to timely adjust the working state of the air guiding assembly 20 according to the position of the heating assembly 40.
S1312: after the heating assembly 40 is judged to be switched from the heating position to the heating stop position, the air guide assembly 20 is controlled to be switched from the open state to the closed state.
Specifically, after the control module 60 determines that the heating assembly 40 is switched from the heating position to the heating stop position, it indicates that the heating assembly 40 has successfully moved to the heating position, and therefore the control module 60 controls the air guiding assembly 20 to be switched from the open state to the closed state immediately. After the air guide assembly 20 is in the closed state, the power supply of the cooling and heating fan can be immediately cut off, so that the heating assembly 40 cannot be damaged in the transportation process, and the detection efficiency cannot be influenced.
In another embodiment, the step of controlling the air guiding assembly 20 to switch from the open state to the closed state in a delayed manner specifically includes the following steps:
s1321: after the cooling and heating fan is switched from the on state to the off state for a first preset time, the air guide assembly 20 is controlled to be switched from the on state to the off state.
Specifically, the first preset time period is a time period during which the heating assembly 40 moves from the heating position to the heating stop position. When the control module 60 determines that the first preset time period elapses after the cooling and heating fan is switched from the on state to the off state, it indicates that the heating assembly 40 has moved to the heating stop position, so as to control the air guiding assembly 20 to be switched from the on state to the off state.
In another embodiment, the step of controlling the air guiding assembly 20 to switch from the open state to the closed state in a delayed manner specifically includes the following steps:
s1331: after the cooling and heating fan is switched from the on state to the off state for a second preset time, the position of the heating assembly 40 is continuously determined.
Specifically, the second preset time period is a time period during which the heating assembly 40 moves from the heating position to the heating stop position. When the control module 60 determines that the second preset time period elapses after the cooling and heating fan is switched from the on state to the off state, which indicates that the heating element 40 should have moved to the heating stop position, the control module 60 continues to determine the position of the heating element 40 to determine whether the heating element 40 has moved to the heating stop position.
S1332: when the heating assembly 40 is judged to be at the heating stop position, the air guide assembly 20 is controlled to be switched from the open state to the closed state; after the heating assembly 40 is determined to be still at the heating position, the cooling and heating fan is determined to be in fault.
Specifically, when the control module 60 determines that the heating element 40 is in the heating stop position, it indicates that the heating element 40 has moved to the heating stop position, and therefore the air guiding assembly 20 can be controlled to switch from the open state to the closed state. When the control module 60 determines that the heating assembly 40 is still at the heating position, it indicates that the cooling/heating fan fails and cannot control the heating assembly 40 to move normally, so as to determine that the cooling/heating fan fails.
S1333: when the cooling and heating fan is judged to be in fault, the air guide assembly 20 is controlled to be switched from the open state to the closed state.
Specifically, when the control module 60 determines that the cooling and heating fan is out of order, the control module 60 sends an alarm and directly turns off the air guide assembly 20.
According to the cooling and heating fan and the control method thereof, the air guide assembly 20 is closed only when the heating assembly 40 is located at the heating stop position, so that the problem that the heating assembly 40 located at the heating position is easy to damage in the sales and transportation process due to the fact that a detector turns off the power supply of the cooling and heating fan in advance after detection is finished is avoided, and the increase of after-sales complaints and the increase of transportation, production and sales costs are avoided.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A cooling and heating fan is characterized by comprising:
the main body comprises an air outlet duct;
the air guide assembly (20) is arranged on the main body, and the air guide assembly (20) is controlled to be in an open state for communicating the air outlet duct with the external environment or in a closed state for disconnecting the air outlet duct from the external environment; and
the heating assembly (40) is arranged on the main body, and the heating assembly (40) is controlled to be positioned at a heating position intersected with the air outlet duct or a heating stopping position far away from the air outlet duct;
when the cooling and heating fan is in a starting state, the air guide assembly (20) is in an opening state; when the cooling and heating fan is switched from the on state to the off state, the air guide assembly (20) is switched from the on state to the off state according to the position of the heating assembly (40).
2. The cooling-heating fan according to claim 1, wherein when the heating assembly (40) is in the heating stop position, the air guide assembly (20) is immediately switched from the open state to the closed state;
when the heating component (40) is located at the heating position, the air guide component (20) is switched to the closed state from the open state in a delayed mode.
3. Cooling/heating fan according to claim 1, characterised in that it comprises a position detection module (80), said position detection module (80) being adapted to obtain the position of the heating assembly (40).
4. The cooling-heating fan according to claim 3, further comprising a control module (60), the control module being electrically connected to the detection module (80), the air guiding assembly (20) and the heating assembly (40), respectively, wherein the control module (60) is configured to control the operating states of the air guiding assembly (20) and the heating assembly (40) according to the position of the heating assembly (40).
5. A method for controlling a cooling/heating fan as claimed in any one of claims 1 to 4, comprising the steps of:
acquiring the working state of the cooling and heating fan;
when the cooling and heating fan is switched from a power-on state to a power-off state, acquiring the position of a heating assembly (40);
and controlling the air guide assembly (20) to be switched from the open state to the closed state according to the position of the heating assembly (40).
6. The control method according to claim 5, wherein the step of controlling the air guide assembly (20) to switch from the open state to the closed state according to the position of the heating assembly (40) comprises the following steps:
when the heating assembly (40) is judged to be positioned at the heating stop position, the air guide assembly (20) is controlled to be immediately switched from the opening state to the closing state;
and when the heating assembly (40) is judged to be positioned at the heating position, the air guide assembly (20) is controlled to be switched from the opening state to the closing state in a delayed mode.
7. The control method according to claim 6, wherein the step of controlling the air guide assembly (20) to switch from the open state to the closed state with a delay comprises the steps of:
continuously determining the position of the heating assembly (40);
and after the heating assembly (40) is judged to be switched from the heating position to the heating stop position, controlling the air guide assembly (20) to be switched from the open state to the closed state.
8. The control method according to claim 6, wherein the step of controlling the air guide assembly (20) to switch from the open state to the closed state in a delayed manner comprises the following steps:
and after the cooling and heating fan is switched from the on state to the off state for a first preset time, controlling the air guide assembly (20) to be switched from the on state to the off state.
9. The control method according to claim 6, wherein the step of controlling the air guide assembly (20) to switch from the open state to the closed state in a delayed manner comprises the following steps:
after the cooling and heating fan is switched from the on state to the off state for a second preset time, the position of the heating assembly (40) is continuously judged;
and after the heating assembly (40) is judged to be at the heating stop position, controlling the air guide assembly (20) to be switched from the opening state to the closing state.
10. The control method according to claim 6, wherein the step of controlling the air guide assembly (20) to switch from the open state to the closed state in a delayed manner comprises the following steps:
after the cooling and heating fan is switched from the on state to the off state for a second preset time, the position of the heating assembly (40) is continuously judged;
and judging the fault of the cooling and heating fan after judging that the heating assembly (40) is still at the heating position.
11. The control method according to claim 10, wherein the air guide assembly (20) is controlled to switch from the open state to the closed state after the cooling and heating fan is judged to be in failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134554.6A CN111255725B (en) | 2020-03-02 | 2020-03-02 | Cooling and heating fan and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010134554.6A CN111255725B (en) | 2020-03-02 | 2020-03-02 | Cooling and heating fan and control method thereof |
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| CN111255725A CN111255725A (en) | 2020-06-09 |
| CN111255725B true CN111255725B (en) | 2021-01-15 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0072663B1 (en) * | 1981-08-17 | 1986-07-30 | Kemtron International (Holdings) Limited | Multi-purpose fan |
| CN2856796Y (en) * | 2005-12-30 | 2007-01-10 | 先锋电器集团有限公司 | Air duct assembly of air conditioning fan, and cooling/heating air conditioning fan having such air duct assembly |
| CN201696325U (en) * | 2010-06-22 | 2011-01-05 | 宁波卡蒂亚电器有限公司 | Cold and warm switching device of cold and warm fan |
| CN204025153U (en) * | 2014-06-09 | 2014-12-17 | 艾美特电器（深圳）有限公司 | A kind of both cooling and heating fan |
| CN206770237U (en) * | 2017-04-12 | 2017-12-19 | 中山市永佳丰生活电器有限公司 | A kind of tower fan for blowing warm wind |
| CN108386374A (en) * | 2018-04-11 | 2018-08-10 | 苏州威士德电子有限公司 | A kind of tower fan that blowing is warmed oneself dual-purpose |
| CN208934967U (en) * | 2018-09-18 | 2019-06-04 | 珠海格力电器股份有限公司 | A kind of PTC component mobile device and its cooling fan for cooling fan |
| CN209370115U (en) * | 2018-11-23 | 2019-09-10 | 深圳市联创电器实业有限公司 | A kind of dual-purpose circulation fan of cold air |
| CN209960680U (en) * | 2019-05-06 | 2020-01-17 | 珠海格力电器股份有限公司 | Motion and have its cold warm formula air cooler |
| CN110454423A (en) * | 2019-08-19 | 2019-11-15 | 珠海格力电器股份有限公司 | Cold-warm fan |
| CN110440370A (en) * | 2019-08-23 | 2019-11-12 | 珠海格力电器股份有限公司 | A kind of air channel structure and the device with air channel structure |
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2020
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