CN214887941U - Front air cover plate capable of reducing blowing temperature of fan and fan thereof - Google Patents

Abstract

The utility model discloses a front wind cover plate capable of reducing the blowing temperature of a fan and the fan thereof, belonging to the technical field of household appliances, wherein a plurality of reducing pipes capable of throttling and expanding air are densely distributed on the front plate surface of the front wind cover plate, the air inlet ends of the reducing pipes are communicated from the front plate surface of the front wind cover plate to the rear plate surface, after the air comes out from the reducing pipes, the circulation area is reduced, the flow speed is accelerated, and the blown air temperature is reduced; the top end of the support is rotatably connected with a first rotating shaft, a connecting block is sleeved on the first rotating shaft, a second rotating shaft is vertically installed at the top end of the connecting block, a motor is installed at the top end of the second rotating shaft, an output shaft of the motor penetrates through the axis of the rear fan cover and is sleeved with a fixing sleeve, the axis of the fan blade is inserted into the end of the fixing sleeve, and a front fan cover plate is installed at the front end of the rear fan cover; when air flows from the rear fan cover to the front fan cover plate, the temperature is reduced under the action of the reducer, and then the aim of blowing low-temperature air by the fan is achieved.

Description

Front air cover plate capable of reducing blowing temperature of fan and fan thereof

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a can reduce preceding fan housing plate and fan of fan temperature of blowing.

Background

The fan is an electric fan used in hot weather to cool the air, and is a device driven by electricity to generate airflow. The fan mainly comprises a fan head, fan blades, a control device and the like, wherein the fan head comprises a motor, a front fan cover, a rear fan cover, a head-shaking air supply mechanism and the like. Common domestic electric fan belongs to axial fan by nature, the flow direction of wind is on a parallel with the rotation axis of flabellum promptly, like patent number "201821174450.2", the utility model patent of the name is "wiring structure of electric fan", the electric fan includes preceding screen panel, back screen panel and fan blade, the fan blade setting is between preceding screen panel and back screen panel, the pivot of fan blade and the motor output shaft coaxial coupling of back screen panel rear end, the starter motor can make the fan blade rotate fast, make the air at fan rear flow to fan the place ahead fast, make human surface moisture evaporation behind the human body of fast flowing air process, absorb the heat, thereby let the human body feel nice and cool. However, the air coming out of the fan does not really have the effect of cooling down in the whole operation process of the fan, and if the indoor temperature is very high, the blown air is also high in temperature. That is, the general fan has no cooling function, and the use of an air conditioner for cooling is also power-consuming and environmentally unfriendly, and therefore, a fan capable of reducing the blowing temperature is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned technical problem, provide a can reduce fan blowing temperature's preceding fan housing plate and fan thereof, be covered with the reducer on the preceding fan housing plate of fan, the fan blade rotates and takes place the throttle inflation after the air passes through the reducer, and the circulation of air area diminishes, and unit volume diminishes, and pressure diminishes, and the velocity of flow improves to the wind temperature that makes to blow off descends, realizes the effect of reducing the temperature.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a can reduce fan temperature of blowing preceding hood plate, it has a plurality of reducers that can make the expansion of air throttle to gather on the preceding face of preceding hood plate, the air inlet end of reducer is followed preceding face of preceding hood plate link up to the back face.

Preferably, the reducer is perpendicular to the front panel surface of the front hood panel.

Preferably, the front wind shield plate is a circular plate, the diameter of the front wind shield plate is 450-550 mm, the diameter of the wind inlet end of the reducer is 40-55 mm, the diameter of the wind outlet end of the reducer is 8-12 mm, and the height of the reducer is 65-75 mm.

Preferably, the annular that supplies the back fan housing to peg graft is seted up on the back face of preceding fan housing plate, simultaneously along on the both sides inner wall of annular radially indent first recess and second recess, the second recess interpolation have with the kelly of second groove width looks adaptation, the kelly pass through the spring with first recess bottom is connected, the width of first recess is greater than the width of second recess, the kelly is located be equipped with the pulling piece on the pole wall in the annular.

Preferably, the number of the first grooves and the second grooves is four, and four first grooves and four second grooves are annularly arrayed on two sides of the ring groove.

Preferably, the inner walls of the two sides of the second groove are recessed to form guide grooves parallel to the surface of the front hood plate, the ends of the clamping rods are provided with guide rods, the two ends of each guide rod extend into the guide grooves respectively, the length of each guide rod is matched with the width of each guide groove, and the width of the first groove is larger than that of each guide rod.

The utility model also provides a fan, including base, support, flabellum and back fan housing, the top of support is rotated and is connected with and is on a parallel with the first pivot of base, the connecting block has been cup jointed in the first pivot, the perpendicular to is installed on the top of connecting block the second pivot of first pivot, the motor is installed on the top of second pivot, the motor rear end is equipped with the rotation regulation button, the output shaft of motor passes the axle center of back fan housing has cup jointed fixed cover, the axle center fixed connection of flabellum is in on the end of fixed cover, preceding fan housing board is installed at the front end of back fan housing.

The front end face of the rear fan cover is inserted into the annular groove, and a rubber layer is arranged on the side face of the front end face of the rear fan cover inserted into the annular groove.

Preferably, a power switch, a gear adjusting button and a steering button are mounted on the base.

The utility model discloses for prior art gain following technological effect:

1. the utility model provides a dense cloth has the reducer that can make the air throttle inflation on the preceding face of preceding hood plate, when the air end entering of air follow reducer then come out from the air-out end, because the air-out end diameter of reducer is less, the area that the air flows through reduces, unit volume reduces, air pressure diminishes this moment, air flow rate is showing the increase, it is shorter to make the air flow through the time, the air comes not to reach and carries out the heat exchange with the external world, consequently, the adiabatic process can be regarded as approximately to the throttling process, throttle inflation promptly, both energy output had not been had this moment, also energy input has not been, energy after the gas throttle keeps unchangeable, keep unchangeable under the condition that the energy keeps unchangeable, air flow rate is showing and increases, then air temperature is then corresponding decline, thereby make the air temperature who blows reduce.

2. The front wind shield plate and the rear wind shield are spliced through the annular groove, so that the front wind shield plate and the rear wind shield are more convenient and quicker to assemble and disassemble, the use is convenient, and the time is saved; only need stir the pulling block when pegging graft, drive kelly compression spring through the pulling block, the kelly is extracted from the second recess, receive in the first recess, then behind the front end insert ring groove of back fan housing, loosen the pulling block, under the effect of spring, the kelly passes between the spoke of back fan housing, then penetrate the second recess again, under the injecing of kelly, make the connection of back fan housing and front wind cover plate more firm, prevent that the back fan housing from breaking away from the front wind cover plate.

3. The fan in the utility model is not added with other accessories, only the traditional front fan cover is replaced with the front fan cover plate with the reducing pipe, the rear fan cover is adapted and improved, the product can be processed by the die, and the structure is simple; then under the action of the front wind shield plate, the temperature of air blown in from the rear of the fan rear wind shield can be really reduced, the purpose of reducing the ambient temperature of a human body is achieved, and the temperature sensitivity of the human body is really reduced; simultaneously, the rotating speed, the fan swinging and the swinging direction of the fan can be regulated and controlled by arranging the gear adjusting button, the steering button and the rotary adjusting button, so that the use is more convenient.

4. The utility model discloses in add the rubber layer in the annular junction of back fan housing and preceding fan housing board to the frictional force of fan housing and annular behind the increase makes back fan housing and preceding fan housing board fixed more firm, and the rubber layer can prevent that preceding fan housing board from rocking noise emission simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is an exploded view of a fan structure;

FIG. 2 is a schematic structural view of a front cowl panel;

FIG. 3 is a structural side sectional view of the front cowl panel;

fig. 4 is an enlarged view of the front cowl panel a.

Description of reference numerals: 1. a base; 2. a support; 3. connecting blocks; 4. a second rotating shaft; 5. a motor; 6. rotating the adjusting button; 7. a rear fan cover; 8. fixing a sleeve; 9. a fan blade; 10. a ring groove; 11. a front wind shield plate; 12. a first groove; 13. a spring; 14. a clamping rod; 15. a second groove; 16. a guide bar; 17. a guide groove; 18. a first rotating shaft; 19. a reducer; 20. a power switch; 21. a gear adjusting button; 22. a steering button; 23. a rubber layer; 24. and pulling the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present embodiment, as shown in fig. 1 to 4, a plurality of reducers 19 for throttling and expanding air are densely distributed on the front plate surface of the front cowl panel 11, and the air inlet ends of the reducers 19 penetrate from the front plate surface to the rear plate surface of the front cowl panel 11. The air blows to the back plate surface of the front wind shield plate 11, then flows in from the air inlet end of the reducing pipe 19, because the diameter of the reducing pipe 19 is gradually reduced, when the air flows out from the air outlet end of the reducing pipe 19, the area for air circulation is obviously reduced, the unit volume is also reduced, the air pressure is reduced, the throttling expansion effect is generated, the temperature of the blown air is reduced, and the temperature of the air around the human body is really reduced.

Further, in this embodiment, reducer 19 is perpendicular to the front panel surface of front hood panel 11, after air enters reducer 19, air is blown out perpendicularly from the air outlet end of reducer 19, reducer 19 plays a role in guiding while cooling, so that air is blown to the human body accurately, and the ambient temperature of the human body is reduced rapidly.

In this embodiment, as shown in fig. 2 to 3, the front hood panel 11 is a circular plate, the diameter of the front hood panel 11 is 450 to 550mm, the reducer 19 is in the shape of a circular truncated cone, the diameter of the air inlet end (large circular end) of the reducer 19 is 40 to 55mm, the diameter of the air outlet end (small circular end) is 8 to 12mm, the height of the reducer 19 is 65 to 75mm, and the air inlet end of the reducer 19 penetrates through the surface of the front hood panel 11, so that air can be blown out of the front surface of the front hood panel 11 from the rear surface of the front hood panel 11 through the reducer 19. When gas passes through a small circular surface at the air outlet end of the reducer 19, the air flow rate is remarkably increased due to the small diameter, and meanwhile, the height of the reducer 19 is short, so that the flowing time is short, and the air cannot exchange heat with the outside, therefore, the throttling process can be approximately regarded as an adiabatic process, and when the gas is throttled, the energy output and the energy input are avoided, so that the energy before and after the gas is throttled is kept unchanged, and under the condition that the energy is kept unchanged, the air flow rate is remarkably increased, and the air temperature is correspondingly reduced.

In this embodiment, as shown in fig. 2 to 3, the diameter of the front hood panel 11 is 500mm, the diameter of the air inlet end of the reducer 19 is 49mm, the diameter of the air outlet end is 10mm, and the height of the reducer 19 is 70 mm. The number of reducer 19 is 61, 61 reducers 19 being arranged in a circular array on the front face of front cowl panel 11. The densely arranged reducer 19 not only ensures the outlet air temperature to be reduced, but also ensures the fan to have enough outlet air volume.

In this embodiment, as shown in fig. 3 to 4, a ring groove 10 for inserting the rear wind shield 7 is formed on the rear plate surface of the front wind shield plate 11. The inner walls of two sides of the ring groove 10 are respectively provided with a second groove 15 and a first groove 12, the first groove 12 and the second groove 15 are arranged along the radial direction of the ring groove 10, and the first groove 12 and the second groove 15 are coaxially arranged. The clamping rod 14 is inserted into the second groove 15, the width of the clamping rod 14 is matched with the groove width of the second groove 15, and the clamping rod 14 is almost attached to the inner wall of the second groove 15 after being inserted into the second groove 15 so as to ensure the stability of the clamping rod 14 in the second groove 15. Meanwhile, the shapes of the clamping rod 14 and the second groove 15 are also matched, namely if the second groove 15 is a circular groove, the clamping rod 14 is a circular rod, and the diameter of the clamping rod 14 is matched with that of the second groove 15; when the second groove 15 is a rectangular groove, the clamping rod 14 is a rectangular rod, and the height and width of the clamping rod 14 are matched with the groove width and height of the second groove 15. The bottom of the first groove 12 is fixedly connected with one end of a spring 13, and the other end of the spring 13 penetrates through the first groove 12 in an unstretched and compressed state and is then connected with the end of a clamping rod 14. Meanwhile, the width of the first groove 12 is larger than that of the second groove 15, so that the clamping rod 14 can be smoothly collected into the first groove 12, and the influence on the insertion of the rear fan cover 7 into the annular groove 10 is avoided. The rod wall of the clamping rod 14 positioned in the part of the ring groove 10 is provided with a pulling block 24, the spring 13 can be contracted by pulling the pulling block 24, and the clamping rod 14 is pulled out of the second groove 15 and is retracted into the first groove 12. As can be seen from fig. 1, the rear wind shield 7 in this embodiment is a circular shield formed by a plurality of bent spokes and a front annular plate, when the annular plate on the front end surface of the rear wind shield 7 is inserted into the annular groove 10, the pulling block 24 is released, the spring 13 is reset, the clamping rod 14 is pushed to extend from the first groove 12, extend out and then penetrate between the spokes on the rear wind shield 7, and extend into the second groove 15, and then the clamping rod 14 crosses behind the annular plate of the rear wind shield 7, so as to clamp the annular plate in the annular groove 10, thereby preventing the rear wind shield 7 from being separated from the annular groove 10, and increasing the connection stability between the rear wind shield 7 and the annular groove 10.

Further, as shown in fig. 3 to 4, in the present embodiment, the number of the first grooves 12 and the second grooves 15 is four, and the four first grooves 12 and the four second grooves 15 are correspondingly arranged at two sides of the groove wall of the ring groove 10, so as to respectively clamp the front end surface of the rear wind shield 7 up and down, left and right, and improve the connection stability between the front wind shield plate 11 and the rear wind shield 7.

Further, in this embodiment, as shown in fig. 3 to 4, guide grooves 17 parallel to the panel surface of the front cowl panel 11 are recessed in the inner walls of the two sides of the second groove 15, meanwhile, the end of the clamping rod 14 is transversely connected with a guide rod 16, two ends of the guide rod 16 are respectively inserted into the guide grooves 17 of the two sides of the second groove 15, the rod length of the guide rod 16 is matched with the overall groove width of the guide grooves 17, in this embodiment, the guide rod 16 is a circular rod, the diameter of the guide rod 16 is matched with the groove height of the guide grooves 17, so as to guide the guide rod 16, and under the limit of the guide rod 16 and the guide grooves 17, the clamping rod 14 is clamped more stably, so that the rear cowl 7 can be effectively prevented from shaking. While the width of the first groove 12 is greater than the length of the guide bar 16 so that the guide bar 16 does not interfere with the retraction of the chucking rod 14 into the first groove 12.

As shown in fig. 1, this embodiment also provides a fan, including base 1, support 2, flabellum 9 and back fan housing 7, wherein the last fixed surface of base 1 is connected with support 2, and the top of support 2 is rotated and is connected with the first pivot 18 that is on a parallel with base 1, has cup jointed connecting block 3 in the first pivot 18, and second pivot 4 is installed perpendicularly to the top of connecting block 3, and motor 5 is installed on the top of second pivot 4, and the motor 5 rear end is equipped with rotation regulation button 6. An output shaft at the front end of the motor 5 penetrates through the axis of the rear fan housing 7 and is inserted into the fixing sleeve 8, the axis of the fan blade 9 is inserted into the other end head of the fixing sleeve 8, the front fan housing plate 11 is installed at the front end of the rear fan housing 7, the annular front end face of the rear fan housing 7 is inserted into the annular groove 10 of the front fan housing plate 11, then the annular front end face of the rear fan housing 7 extends into the space between spokes of the rear fan housing 7 through the clamping rod 14, then the rear side of the front end face plate of the rear fan housing 7 is clamped, and the front end face plate of the rear fan housing 7 is pressed into the annular groove 10. After the motor 5 is started, air passes through the spokes from the rear of the rear fan cover 7, then flows to the front fan cover plate 11 and the reducer 19, and is blown out from the reducer 19, the air flow rate blown out from the reducer 19 is obviously increased, the temperature of the blown air is correspondingly reduced under the throttling expansion effect of the air brought by the reducer 19, and the effect of reducing the ambient temperature of a human body is achieved.

Further, in the present embodiment, the rear hood 7 is a circular hood, the front hood plate 11 is a circular plate, the front end surface of the rear hood 7 is inserted into the annular groove 10 on the rear plate surface of the front hood plate 11, and a rubber layer 23 is attached to the side surface of the front end plate where the rear hood 7 is inserted into the annular groove 10. And the thickness of the front end face of the rear fan housing 7 is the same as the groove width of the annular groove 10, then the rubber layer 23 is arranged, the interference fit between the front end face of the rear fan housing 7 and the annular groove 10 is realized, the friction between the rear fan housing 7 and the annular groove 10 is increased, the rear fan housing 7 and the front fan housing plate 11 are fixed more stably, and meanwhile, the rubber layer 23 can also play a role in buffering, so that the front fan housing plate 11 is prevented from shaking and generating noise.

In the present embodiment, as shown in fig. 1, a power switch 20, a shift position adjusting button 21, and a steering button 22 are mounted on the upper surface of the base 1. Switch 20, gear adjusting button 21 and turn button 22 from left to right arrange in proper order at the upper surface of base 1, and switch 20, gear adjusting button 21 and turn button 22 all are located the left side of support 2, through setting up gear adjusting button 21, turn button 22 and rotation adjusting button 6, make the rotational speed of fan, fan swing and swing direction can regulate and control, thereby it is more convenient to use.

The electrical components in this embodiment are electrically connected to an external main controller and 220V commercial power, and the main controller may be a conventional known device controlled by a computer or the like. When the air cooling fan is used, the motor 5 drives the fan blades 9 to rotate after being electrified, air enters from the rear air cover 7 and flows out from the front air cover plate 11, the reducing pipe 19 is installed on the front air cover plate 11, and the air flowing out from the rear air cover 7 is reduced in flow area, accelerated in flow speed and reduced in temperature, so that the temperature of the air around a person is reduced, and the feeling of the person is cooler.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (8)

1. The utility model provides a can reduce fan temperature of blowing preceding wind cover plate, its characterized in that, it has a plurality of reducers that can make the expansion of air throttle to gather on the preceding face of preceding wind cover plate, the air inlet end of reducer is followed preceding face of preceding wind cover plate link up to the back face, set up the annular that supplies back fan housing grafting on the back face of preceding wind cover plate, simultaneously along on the both sides inner wall of annular radially inwards go out first recess and second recess, the second recess interpolation have with the kelly of second groove width looks adaptation, the kelly pass through the spring with first recess bottom is connected, the width of first recess is greater than the width of second recess, the kelly is located be equipped with the pulling block on the pole wall in the annular.

2. The front wind cowl panel for reducing a blowing temperature of a fan as claimed in claim 1, wherein the reducer is perpendicular to a front panel surface of the front wind cowl panel.

3. The front wind shield plate capable of reducing the blowing temperature of the fan according to claim 2, wherein the front wind shield plate is a circular plate, the diameter of the front wind shield plate is 450-550 mm, the diameter of the wind inlet end of the reducer is 40-55 mm, the diameter of the wind outlet end of the reducer is 8-12 mm, and the height of the reducer is 65-75 mm.

4. The front windshield plate capable of reducing the blowing temperature of a fan as recited in claim 1, wherein the number of the first grooves and the second grooves is four, and four annular arrays of the first grooves and the second grooves are arranged on two sides of the ring groove.

5. The front cowl panel capable of reducing the blowing temperature of a fan according to claim 4, wherein guide grooves parallel to the panel surface of the front cowl panel are recessed in inner walls of both sides of the second groove, a guide rod having both ends respectively extending into the guide grooves is disposed at an end of the locking rod, the length of the guide rod is adapted to the width of the guide grooves, and the width of the first groove is greater than the length of the guide rod.

6. A fan, which adopts the front fan cover plate capable of reducing the blowing temperature of the fan according to any one of claims 1 to 5, comprising a base, a support, fan blades and a rear fan cover, wherein the top end of the support is rotatably connected with a first rotating shaft parallel to the base, a connecting block is sleeved on the first rotating shaft, a second rotating shaft perpendicular to the first rotating shaft is installed at the top end of the connecting block, a motor is installed at the top end of the second rotating shaft, a rotary adjusting button is arranged at the rear end of the motor, an output shaft of the motor penetrates through the axis of the rear fan cover and is sleeved with a fixed cover, the axis of the fan blades is inserted on the end of the fixed cover, and the front fan cover plate is installed at the front end of the rear fan cover.

7. The fan as claimed in claim 6, wherein the front end of the rear hood is inserted into the annular groove, and a rubber layer is disposed on a side surface of the front end of the rear hood inserted into the annular groove.

8. The fan as claimed in claim 6, wherein the base has a power switch, a gear adjustment button and a turn button mounted thereon.

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