Bladeless fan and temperature control method thereof

Abstract

The invention relates to the technical field of bladeless fans, in particular to a bladeless fan and a temperature control method thereof.The bladeless fan comprises a base, a filter screen is movably connected to the base, a drawer is fixed to the filter screen, a plurality of sets of ice crystal boxes are movably connected to the drawer, a limiting mechanism is arranged between the base and the filter screen, and a plurality of sets of air inlet holes are formed in the filter screen and the drawer; the ice crystal box has the beneficial effects that the ice crystal box is taken out of the base and put into a refrigerator to be frozen for six hours, so that the ice crystal box stores enough cooling capacity, then the ice crystal box is put back into the drawer and put back into the base, and when the motor is powered on to drive the impeller to rotate, air enters the ice crystal box containing groove from the air inlet hole and makes contact with the ice crystal box; the cooling capacity stored in the hydrogel in the ice crystal box is transmitted to the air, so that the air is cooled, the cooled air is pressurized by the impeller, blown into the air pipe from the airflow hole and then exhausted through the exhaust hole, the function of controlling the indoor temperature to be reduced is achieved, and a better cooling effect is provided for a user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bladeless fan, in particular to a bladeless fan and a temperature control method thereof. BACKGROUND

[0002] The bladeless fan is also called a bladeless fan. The fan refers to a device used to generate wind to cool down in hot weather. The electric fan is a device that uses electricity to drive a motor, and the motor drives the fan blades to rotate to generate air flow, thereby achieving the purpose of cooling. However, the fan blades of the ordinary electric fan are exposed outside the motor shaft, although a protective cover is installed, the opening on the protective cover is usually large, and a child's finger can easily extend into the opening, resulting in being injured by the fan blades.

[0003] In the prior art, the patent document with the application number CN202222537248.4 discloses a bladeless fan, which comprises a fan structure, a blowing assembly, and an atomizing assembly installed inside the fan assembly. The fan assembly comprises a fan base, a key panel, and an air inlet. The key panel is installed on the top of the front surface of the fan base. The air inlet is installed on the rear surface of the fan base. The fan structure comprises a wind pipe assembly and a fan assembly. The fan assembly comprises a fan and an impeller. The fan is fixedly installed on the inner side of the fan base. The impeller is connected and installed on one end of the fan. The fan with the bladeless structure generates air flow through the built-in motor and the impeller rotation. The air flow is blown out through the extended ventilation frame pipe and the air outlet, thereby forming a blowing mode with the bladeless structure, ensuring the safety during the use of the fan. At the same time, the atomizing structure can form water mist to humidify the air, ensuring the comfort during use.

[0004] However, the bladeless fan in the prior art can only accelerate air flow to cool down the user like the traditional fan, and cannot control the indoor temperature, resulting in that the cooling effect of the bladeless fan in the prior art is very limited. SUMMARY

[0005] The present application relates to the technical field of bladeless fan, in particular to a bladeless fan and a temperature control method thereof.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A bladeless fan, comprising: a base, the top end of the base is fixed with an air pipe, the air pipe is provided with an air duct, the air duct of the air pipe is communicated with the inside of the base, a plurality of groups of exhaust holes are formed on the air pipe, the base is movably connected with a protective cover, the top end of the protective cover is fixed with a clamping plate, the bottom end of the air pipe is provided with a clamping groove, the clamping plate is movably inserted into the clamping groove, a plurality of groups of air flow holes are formed on the protective cover, the base is movably connected with a filter screen, the filter screen is fixed with a drawer, a plurality of groups of ice crystal boxes are movably connected on the drawer, a limiting mechanism is arranged between the base and the filter screen, a plurality of groups of air inlet holes are formed on the filter screen and the drawer.

[0007] Preferably, the base is fixed with a motor, the transmission shaft of the motor is fixed with an impeller, the impeller is in a cylindrical structure, the drawer is movably inserted into the impeller, the bottom end of the air pipe is fixed with a push plate, the top end of the inner wall of the filter screen abuts against the push plate.

[0008] Preferably, the base is in a circular cylindrical structure, the base is provided with a drawer opening, the filter screen and the drawer are movably inserted into the drawer opening.

[0009] Preferably, the drawer is provided with a plurality of groups of ice crystal box placing grooves, a plurality of groups of ice crystal boxes are movably inserted into the plurality of groups of ice crystal box placing grooves respectively, a plurality of groups of supporting plates are fixed on the inner wall of the ice crystal box placing grooves, the one end of the plurality of groups of supporting plates away from the inner wall of the ice crystal box placing grooves abuts against the ice crystal box, the top end of the ice crystal box is fixed with a pull rod.

[0010] Preferably, the supporting plate is provided with a ventilation hole, the ventilation hole is in a round hole structure.

[0011] Preferably, the limiting mechanism comprises: a filter screen mounting seat, the filter screen mounting seat is fixed on the base, the filter screen mounting seat is provided with a limiting groove, the filter screen is provided with a limiting rod mounting slot, an operating rod is movably inserted into the limiting rod mounting slot.

[0012] Preferably, the one end of the operating rod extends into the limiting rod mounting slot and is fixed with a limiting rod, the one end of the limiting rod is rotatably inserted into the limiting rod mounting slot, the other end of the limiting rod is rotatably inserted into the limiting groove.

[0013] Preferably, the inner wall of the limiting groove is provided with an insertion slot, the insertion slot is in an arc-shaped groove body, the rod body of the limiting rod is provided with an insertion block mounting slot, the one end of an insertion block is movably inserted into the insertion block mounting slot, the other end of the insertion block is movably inserted into the insertion slot.

[0014] Preferably, the one end of the insertion block inserted into the insertion slot is provided with an arc surface, a spring is fixed between the one end of the insertion block inserted into the insertion block mounting slot and the groove body inner wall of the insertion block mounting slot.

[0015] Preferably, the operating rod is in a "T" shaped round rod structure, the thick rod part of the operating rod extends out of the surface, and the thick rod part of the operating rod is provided with an indicating slot, the indicating slot is in a "one" shaped slot body, and the direction of the indicating slot is the same as the opening direction of the plug-in block mounting slot.

[0016] A temperature control method of a bladeless fan, the method comprising a bladeless fan and the following steps: Step one: freezing of the ice crystal box: the protective cover is removed from the air pipe and taken out from the base, and the filter screen is exposed, the operating rod is rotated by ninety degrees, the operating rod drives the limiting rod to rotate, the plug-in block rotates with the limiting rod, under the action of the arc-shaped inner wall of the plug-in slot, when the limiting rod also rotates by ninety degrees, the plug-in block is completely retracted into the plug-in block mounting slot, the limiting mechanism is released, and the indicating slot provided on the operating rod can indicate the direction of the plug-in block; then the operating rod can be pulled outwards, after the operating rod drives the limiting rod to make one end of the limiting rod abut against the inner wall of the limiting rod mounting slot, the operating rod is continuously pulled, the filter screen can be taken out of the drawer opening, the filter screen and the drawer are taken out of the drawer opening, then the ice crystal box is taken out of the ice crystal box placing slot through the pull rod, and the ice crystal box is placed in the refrigerator for freezing for six hours, the ice crystal box is filled with hydrogel, which has a large specific heat capacity, after the ice crystal box is frozen in the refrigerator for six hours, the hydrogel in the ice crystal box accumulates a large amount of cold energy; Step two: the ice crystal box is installed back into the base: the ice crystal box frozen for six hours is taken out of the refrigerator and placed back into the ice crystal box placing slot, the ice crystal box is located in the middle position in the ice crystal box placing slot under the abutting of the support plates, and a gap is left between the ice crystal box and the inner wall of the ice crystal box placing slot, then the filter screen is pushed into the drawer opening, so that the drawer is pushed into the impeller; at this time, the bottom end of the filter screen abuts against the filter screen mounting seat, and the top end of the filter screen abuts against the push plate, so that the drawer is suspended in the impeller and does not contact the impeller; then under the premise that the indicating slot is in a vertical state, the operating rod is pressed inwards, the operating rod pushes the limiting rod into the limiting slot, then the operating rod is rotated by ninety degrees, the plug-in block mounting slot is aligned with the plug-in block, and the compressed spring pushes one end of the plug-in block into the plug-in slot, so as to restore the limiting of the limiting mechanism, so that the drawer maintains the state that the drawer is suspended in the impeller and does not contact the impeller, and the ice crystal box is installed back into the base; then the clamping plate is inserted back into the clamping slot, and the protective cover can be installed back into the base; Step three: control the indoor temperature to reduce the temperature: the motor is energized to drive the impeller to rotate, the impeller draws the air outside through a plurality of groups of air flow holes on the protective cover and a plurality of groups of air inlet holes on the filter screen into the inside of the base, the air entering the inside of the base contacts the ice crystal box, at the same time, the drawer is also provided with air inlet holes, the air in the base can more fully contact the ice crystal box through the air inlet holes and the air holes on the supporting plate, which makes the cold energy stored in the ice crystal box be transferred to the air in the base, so that the temperature of the air is reduced; then, the high-speed rotating impeller pumps the air into the air duct of the air pipe, and blows out through the air outlet holes, so that the purpose of controlling the indoor temperature to reduce the temperature is achieved.

[0017] Compared with the prior art, the beneficial effects of the present application are: The ice crystal box is taken out from the base and placed in the refrigerator for six hours to store sufficient cold energy, then the ice crystal box is placed back in the drawer and installed back in the base, when the motor is energized to drive the impeller to rotate, the air enters the ice crystal box placing groove from the air inlet holes, the air contacts the ice crystal box, the cold energy stored in the hydrogel in the ice crystal box is transferred to the air, so that the air is cooled, the cooled air is pressurized by the impeller and blown into the air pipe from the air flow holes, and then discharged through the air outlet holes, thereby achieving the function of controlling the indoor temperature to reduce the temperature, and providing better cooling effect for the user. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a sectional structure schematic diagram of the present application; Figure 3 It is a sectional structure schematic diagram of the present application; Figure 2 It is an enlarged schematic diagram of structure A in the middle; Figure 4 It is a sectional structure schematic diagram of the present application; Figure 2 It is an enlarged schematic diagram of structure B in the middle; Figure 5 It is a sectional structure schematic diagram of the present application; Figure 6 It is a sectional structure schematic diagram of the present application; Figure 7 It is a sectional structure schematic diagram of the present application; Figure 5 It is an enlarged schematic diagram of structure C in the middle; Figure 8 It is a sectional structure schematic diagram of the present application; Figure 6 It is an enlarged schematic diagram of structure D in the middle; Figure 9 It is a sectional structure schematic diagram of the present application; Figure 5 It is an enlarged schematic diagram of structure E in the middle; Figure 10 It is a sectional structure schematic diagram of the present application; Figure 1 It is an enlarged schematic diagram of structure F in the middle.

[0019] In the figure: base 1, drawer opening 2, filter screen 3, drawer 4, ice crystal box placing groove 5, supporting plate 6, ice crystal box 7, air inlet hole 8, air vent hole 9, filter screen mounting seat 10, limiting groove 11, limiting rod mounting groove 12, operating rod 13, limiting rod 14, motor 15, impeller 16, air flow hole 17, air pipe 18, air outlet hole 19, pull rod 20, plug-in groove 21, plug-in block mounting groove 22, plug-in block 23, spring 24, indicating groove 25, protective cover 26, clamping groove 27, clamping plate 28, push plate 29. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all embodiments, and are only used to explain the embodiments of the present application, and do not limit the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Embodiment one: please refer to Figures 1 to 10 The present application provides a technical scheme: a bladeless fan, comprising: a base 1, the top end of the base 1 is fixed with an air pipe 18, the air pipe 18 is provided with an air duct, the air duct of the air pipe 18 is in communication with the inside of the base 1, a plurality of groups of air outlet holes 19 are formed on the air pipe 18, a protective cover 26 is movably connected to the base 1, the top end of the protective cover 26 is fixed with a clamping plate 28, a clamping groove 27 is formed at the bottom end of the air pipe 18, the clamping plate 28 is movably inserted into the clamping groove 27, a plurality of groups of air flow holes 17 are formed on the protective cover 26, a filter screen 3 is movably connected to the base 1, a drawer 4 is fixed on the filter screen 3, a plurality of groups of ice crystal boxes 7 are movably connected to the drawer 4, a limiting mechanism is arranged between the base 1 and the filter screen 3, a plurality of groups of air inlet holes 8 are formed on the filter screen 3 and the drawer 4, a motor 15 is fixed in the base 1, an impeller 16 is fixed on the transmission shaft of the motor 15, the impeller 16 is in a cylindrical structure, the drawer 4 is movably inserted into the impeller 16, the base 1 is in a cylindrical structure, a drawer opening 2 is formed on the base 1, the filter screen 3 and the drawer 4 are movably inserted into the drawer opening 2.

[0022] In actual use, the ice crystal box 7 is taken out of the base 1 and placed in the refrigerator for six hours to store sufficient cold energy, and then the ice crystal box 7 is placed back in the drawer 4 and the base 1, when the motor 15 is powered on to drive the impeller 16 to rotate, air enters the ice crystal box placing groove 5 from the air inlet hole 8, the air contacts the ice crystal box 7, the ice crystal box 7 adopts a sealed structure, the inside of which is filled with water gel, a large number of uniformly distributed protrusions are arranged on the outer surface of the ice crystal box 7, which can accelerate the heat exchange efficiency between the cold energy stored in the ice crystal box 7 and the external air, and the cold energy stored in the water gel in the ice crystal box 7 is transferred to the air, so that the air is cooled, and the cooled air is blown into the air pipe 18 from the air flow hole 17 after being pressurized by the impeller 16, and then is discharged through the air outlet hole 19, thereby achieving the function of controlling the indoor temperature to be reduced, and providing better cooling effect for the user.

[0023] In the embodiment one, in order to realize the sufficient contact between the air and the ice crystal box 7, a plurality of ice crystal box placing grooves 5 are arranged on the drawer 4, and a plurality of ice crystal boxes 7 are respectively movably inserted into the plurality of ice crystal box placing grooves 5, a plurality of support plates 6 are fixed on the inner wall of the ice crystal box placing groove 5, and the ends of the plurality of support plates 6 away from the inner wall of the ice crystal box placing groove 5 abut against the ice crystal box 7, and a pull rod 20 is fixed to the top end of the ice crystal box 7, and an air hole 9 is arranged on the support plate 6 and has a circular hole structure.

[0024] The plurality of support plates 6 arranged in the ice crystal box placing groove 5 enable the ice crystal box 7 to be erected at the middle position of the ice crystal box placing groove 5 under the abutting action of the support plates 6, so as to leave sufficient gap between the inner wall of the ice crystal box placing groove 5 and the ice crystal box 7, and the air inlet hole 8 is also arranged on the drawer 4, so that the air in the base 1 can more fully contact the ice crystal box 7 through the air inlet hole 8 and the air hole 9 on the support plate 6; in use, when the motor 15 is started to drive the impeller 16 to rotate at high speed, the external air is sucked into the base 1 through the air flow hole 17 and the air inlet hole 8 of the filter screen 3, and after the air enters the base 1, a part of the air directly contacts the ice crystal box 7 close to the filter screen 3, and the other part of the air contacts the ice crystal box 7 away from the filter screen 3 through the air inlet hole 8 at the bottom end of the drawer 4, and in this process, the air and the ice crystal box 7 complete heat exchange, so that the air is cooled, and then the cooled air is pushed into the air pipe 18 by the impeller 16 and is blown to the outside through the air outlet hole 19; the ice crystal box 7 is equipped with two sets, when one set of ice crystal box 7 is installed in the drawer 4 for use, the other set of ice crystal box 7 is placed in the refrigerator for freezing, and when the user feels that the blown air is no longer cool, the ice crystal box 7 in the drawer 4 is taken out and placed in the refrigerator for freezing, and the other set of ice crystal box 7 in the refrigerator is taken out and installed in the drawer 4 again, so that the temperature control function of the bladeless fan can be restored.

[0025] In order to realize the operation of the limiting mechanism, the limiting mechanism comprises: the filter screen mounting seat 10 is fixed on the base 1, the filter screen mounting seat 10 is provided with the limiting slot 11, the filter screen 3 is provided with the limiting rod mounting slot 12, the operating rod 13 is movably inserted into the limiting rod mounting slot 12, one end of the operating rod 13 extends into the limiting rod mounting slot 12 and is fixed with the limiting rod 14, one end of the limiting rod 14 is rotatably inserted into the limiting rod mounting slot 12, the other end of the limiting rod 14 is rotatably inserted into the limiting slot 11, the inner wall of the limiting slot 11 is provided with the insertion slot 21, the insertion slot 21 is an arc-shaped slot, the rod body of the limiting rod 14 is provided with the insertion block mounting slot 22, one end of the insertion block 23 is movably inserted into the insertion block mounting slot 22, the other end of the insertion block 23 is movably inserted into the insertion slot 21, the end of the insertion block 23 inserted into the insertion slot 21 is provided with an arc surface, the spring 24 is fixed between the end of the insertion block 23 inserted into the insertion block mounting slot 22 and the slot body inner wall of the insertion block mounting slot 22, the operating rod 13 is a T-shaped round rod structure, the thick rod part of the operating rod 13 extends out of the surface of the filter screen 3, and the thick rod part of the operating rod 13 is provided with the indicating slot 25, the indicating slot 25 is a one-shaped slot, and the direction of the indicating slot 25 is the same as the opening direction of the insertion block mounting slot 22.

[0026] When the operating rod 13 is rotated by 90 degrees, the operating rod 13 drives the limiting rod 14 to rotate, and the insertion block 23 rotates with the limiting rod 14, and under the action of the arc-shaped inner wall of the insertion slot 21, when the limiting rod 14 also rotates by 90 degrees, the insertion block 23 is completely retracted into the insertion block mounting slot 22, and the limiting mechanism is released, and the indicating slot 25 provided on the operating rod 13 can indicate the direction of the insertion block 23; under the premise that the indicating slot 25 is in a vertical state, the operating rod 13 is pressed inward, the operating rod 13 pushes the limiting rod 14 into the limiting slot 11, and then the operating rod 13 is rotated by 90 degrees, so that the insertion block mounting slot 22 is aligned with the insertion block 23, and the compressed spring 24 pushes one end of the insertion block 23 into the insertion slot 21, so that the limiting of the limiting mechanism is restored.

[0027] In order to realize that the drawer 4 is suspended in the impeller 16, the limiting mechanism is arranged between the base 1 and the filter screen 3, the bottom end of the air pipe 18 is fixed with the push plate 29, and the inner wall top end of the filter screen 3 abuts against the push plate 29.

[0028] When the filter screen 3 is inserted into the drawer opening 2, the inner wall top end of the filter screen 3 abuts against the push plate 29, and the bottom end of the filter screen 3 is limited together with the filter screen mounting seat 10 through the limiting mechanism, so that the filter screen 3 is fixed, the drawer 4 is fixed on the filter screen 3, and therefore the drawer 4 is also fixed, so that the suspension of the drawer 4 is realized.

[0029] In actual use, the ice crystal box 7 is taken out from the base 1 and placed in the refrigerator for six hours to store enough cold energy, and then the ice crystal box 7 is placed back in the drawer 4 and the base 1, when the motor 15 is powered on to drive the impeller 16 to rotate, air enters the ice crystal box placing groove 5 from the air inlet hole 8, the air contacts the ice crystal box 7, the cold energy stored in the hydrogel in the ice crystal box 7 is transferred to the air, so that the air is cooled, and the cooled air is pressurized by the impeller 16 and blown into the air pipe 18 from the air flow hole 17, and then discharged through the air outlet hole 19, thereby playing a role in controlling the indoor temperature to be reduced, and providing better cooling effect for the user; a plurality of support plates 6 are arranged in the ice crystal box placing groove 5, so that after the ice crystal box 7 is placed in the ice crystal box placing groove 5, the ice crystal box 7 is erected in the middle position of the ice crystal box placing groove 5 under the resistance of the support plates 6, so as to leave enough gap between the inner wall of the ice crystal box placing groove 5 and the ice crystal box 7, and the air in the base 1 can more fully contact the ice crystal box 7 through the air inlet hole 8 and the air hole 9 on the support plate 6; the operating rod 13 is rotated by ninety degrees, the operating rod 13 drives the limiting rod 14 to rotate, the plug-in block 23 rotates with the limiting rod 14, under the action of the arc-shaped inner wall of the plug-in groove 21, when the limiting rod 14 also rotates by ninety degrees, the plug-in block 23 is completely retracted into the plug-in block mounting groove 22, the limiting mechanism is released, and the indicating groove 25 on the operating rod 13 can indicate the direction of the plug-in block 23; under the premise that the indicating groove 25 is in a vertical state, the operating rod 13 is pressed inward, the operating rod 13 pushes the limiting rod 14 into the limiting groove 11, and then the operating rod 13 is rotated by ninety degrees, so that the plug-in block mounting groove 22 is aligned with the plug-in block 23, and the compressed spring 24 pushes one end of the plug-in block 23 into the plug-in groove 21, thereby restoring the limiting of the limiting mechanism.

[0030] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bladeless fan, comprising: A base (1) is provided with an air pipe (18) fixed at the top of the base (1). An air duct is provided in the air pipe (18). The air duct of the air pipe (18) is connected to the interior of the base (1). Several sets of exhaust holes (19) are provided on the air pipe (18). A protective cover (26) is movably connected to the base (1). A card plate (28) is fixed at the top of the protective cover (26). A slot (27) is provided at the bottom of the air pipe (18). The card plate (28) is movably inserted into the slot (27). Several sets of airflow holes (17) are provided on the protective cover (26). The base (1) is characterized by having a filter screen (3) movably connected to the base (1). A drawer (4) is fixed on the filter screen (3). Several sets of ice crystal boxes (7) are movably connected to the drawer (4). A limit mechanism is provided between the base (1) and the filter screen (3). Several sets of air inlets (8) are provided on both the filter screen (3) and the drawer (4). A motor (15) is fixed in the base (1), and an impeller (16) is fixed on the drive shaft of the motor (15). The impeller (16) has a cylindrical structure, and the drawer (4) is movably inserted into the impeller (16). A push plate (29) is fixed at the bottom of the inner wall of the air pipe (18), and the top of the inner wall of the filter screen (3) rests on the push plate (29).

2. A bladeless fan according to claim 1, characterized in that: The base (1) has a cylindrical structure and a drawer opening (2) is provided on the base (1). The filter screen (3) and the drawer (4) are movably inserted into the drawer opening (2).

3. A bladeless fan according to claim 1, characterized in that: The drawer (4) has several sets of ice crystal box placement slots (5), and several sets of ice crystal boxes (7) are movably inserted into the several sets of ice crystal box placement slots (5). Several sets of support plates (6) are fixed on the inner wall of the ice crystal box placement slots (5). The end of the several sets of support plates (6) away from the inner wall of the ice crystal box placement slots (5) abuts against the ice crystal box (7). A pull rod (20) is fixed on the top of the ice crystal box (7).

4. A bladeless fan according to claim 3, characterized in that: The support plate (6) has ventilation holes (9), which are circular holes.

5. A bladeless fan according to claim 1, characterized in that: The limiting mechanism includes: a filter screen mounting base (10), which is fixed on the base (1). A limiting groove (11) is provided on the filter screen mounting base (10), and a limiting rod mounting groove (12) is provided on the filter screen (3). An operating rod (13) is movably inserted into the limiting rod mounting groove (12).

6. A bladeless fan according to claim 5, characterized in that: One end of the operating lever (13) extends into the limiting rod mounting groove (12) and fixes the limiting rod (14). One end of the limiting rod (14) is rotatably inserted into the limiting rod mounting groove (12), and the other end of the limiting rod (14) is rotatably inserted into the limiting groove (11).

7. A bladeless fan according to claim 6, characterized in that: The inner wall of the limiting groove (11) is provided with a plug groove (21), which is an arc-shaped groove. The rod body of the limiting rod (14) is provided with a plug block mounting groove (22). One end of the plug block (23) is movably inserted into the plug block mounting groove (22), and the other end of the plug block (23) is movably inserted into the plug groove (21).

8. A bladeless fan according to claim 7, characterized in that: The end of the plug-in block (23) inserted into the plug-in groove (21) has an arc surface, and a spring (24) is fixed between the end of the plug-in block (23) inserted into the plug-in block mounting groove (22) and the inner wall of the groove (22).

9. A bladeless fan according to claim 8, characterized in that: The operating lever (13) has a "T" shaped round rod structure. The thick part of the operating lever (13) extends out of the surface of (3), and an indicator groove (25) is provided on the thick part of the operating lever (13). The indicator groove (25) is a "I" shaped groove, and the direction of the indicator groove (25) is the same as the opening direction of the plug-in block mounting groove (22).

10. A method for temperature control of a bladeless fan according to any one of claims 1-9, characterized in that: The method includes the following steps: Step 1: Freezing the ice crystal box (7): Remove the protective cover (26) from the air pipe (18) and take it off the base (1), exposing the filter screen (3). Rotate the operating lever (13) ninety degrees. The operating lever (13) drives the limiting lever (14) to rotate. When the limiting lever (14) rotates, the plug block (23) rotates with the limiting lever (14). Under the action of the arc-shaped inner wall of the plug groove (21), when the limiting lever (14) also rotates ninety degrees, the plug block (23) is completely retracted into the plug block mounting groove (22), the limiting mechanism is released, and the indicator groove (25) on the operating lever (13) can indicate the direction of the plug block (23); then you can... Pull the operating lever (13) outward, and the operating lever (13) will drive the limiting lever (14) so ​​that one end of the limiting lever (14) abuts against the inner wall of the limiting lever mounting groove (12). Continue to pull the operating lever (13) to bring the filter screen (3) out of the drawer opening (2). Pull the filter screen (3) and drawer (4) out of the drawer opening (2). Then, take the ice crystal box (7) out of the ice crystal box placement groove (5) by pulling the lever (20) and put the ice crystal box (7) into the refrigerator for freezing for six hours. The ice crystal box (7) is filled with hydrogel, which has a large specific heat capacity. After freezing in the refrigerator for six hours, the hydrogel in the ice crystal box (7) accumulates a large amount of cold energy. Step 2: Put the ice crystal box (7) back into the base (1): Take the ice crystal box (7) out of the refrigerator after freezing for six hours and put it back into the ice crystal box placement slot (5). The support plates (6) support the ice crystal box (7) so that the ice crystal box (7) is in the middle position in the ice crystal box placement slot (5). There is a gap between the ice crystal box (7) and the inner wall of the ice crystal box placement slot (5). Then push the filter screen (3) into the drawer opening (2) so that the drawer (4) is pushed into the impeller (16). At this time, the bottom end of the filter screen (3) rests on the filter screen mounting base (10) and the top end of the filter screen (3) rests on the push plate (29), so that the drawer (4) is suspended in the impeller (16) and does not contact the impeller (16). Then in With the indicator slot (25) in a vertical position, press the operating lever (13) inward. The operating lever (13) pushes the limit lever (14) into the limit slot (11). Then rotate the operating lever (13) ninety degrees so that the plug-in block mounting slot (22) and the plug-in block (23) are aligned. The compressed spring (24) pushes one end of the plug-in block (23) into the plug-in slot (21), thereby restoring the limit of the limit mechanism. This keeps the drawer (4) suspended in the impeller (16) and not in contact with the impeller (16), thus completing the process of putting the ice crystal box (7) back into the base (1). Then, insert the card plate (28) back into the card slot (27) to put the protective cover (26) back into the base (1). Step 3: Controlling the indoor temperature and lowering the temperature: The motor (15) is powered on and drives the impeller (16) to rotate. The impeller (16) draws outside air into the base (1) through several sets of airflow holes (17) on the protective cover (26) and several sets of air inlets (8) on the filter screen (3). The air entering the base (1) comes into contact with the ice crystal box (7). At the same time, the drawer (4) also has air inlets (8). The air in the base (1) can come into more full contact with the ice crystal box (7) through the air inlets (8) and the ventilation holes (9) on the support plate (6). This allows the cold energy stored in the ice crystal box (7) to be transferred to the air in the base (1), causing the air temperature to drop. Afterward, the high-speed rotating impeller (16) pumps the air into the air duct (18) and blows it out through the exhaust hole (19), which can achieve the purpose of controlling the indoor temperature and lowering the temperature.

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