阅读说明：本技术 一种风道可变的冷暖循环扇 (Air duct variable cooling and heating circulating fan ) 是由 赖伴来 庞亚鹏 于 2020-08-11 设计创作，主要内容包括：本发明公开了一种风道可变的冷暖循环扇,位于风叶与发热组件之间的后网罩上设有一段径向进风通道,后网罩的前端形成一段密闭环形风道,密闭环形风道与径向进风通道同轴连接,径向进风通道的外圆面处还设有挡风片,挡风片的一端通过固定连接件与后网罩形成旋转铰接；挡风片向着远离径向进风通道的方向旋转时,挡风片将径向进风通道打开,挡风片反向旋转至径向进风通道的外圆面位置时,挡风片将径向进风通道关闭。本发明在后网罩的径向进风通道圆周位置设置了多个沿着轴向旋转的挡风片,挡风片完全阻隔径向风直接绕经加热组件进入密封环形风道,从而可以完全避免在暖风时掺杂冷风的现象,出风效果更柔和,有效改善用户体感。(The invention discloses a cooling and heating circulating fan with a variable air channel.A section of radial air inlet channel is arranged on a rear mesh enclosure positioned between a fan blade and a heating assembly, a section of closed annular air channel is formed at the front end of the rear mesh enclosure, the closed annular air channel is coaxially connected with the radial air inlet channel, a wind shield sheet is further arranged on the outer circular surface of the radial air inlet channel, and one end of the wind shield sheet is rotatably hinged with the rear mesh enclosure through a fixed connecting piece; when the wind shield piece rotates towards the direction far away from the radial air inlet channel, the radial air inlet channel is opened by the wind shield piece, and when the wind shield piece reversely rotates to the position of the outer circular surface of the radial air inlet channel, the radial air inlet channel is closed by the wind shield piece. According to the invention, the plurality of wind-blocking sheets rotating along the axial direction are arranged at the circumferential position of the radial air inlet channel of the rear mesh enclosure, and the wind-blocking sheets completely block radial air from directly entering the sealed annular air channel by winding the heating assembly, so that the phenomenon of doping cold air during warm air can be completely avoided, the air outlet effect is softer, and the user feeling is effectively improved.)

1. A cooling and heating circulating fan with a variable air duct comprises a rear mesh enclosure (1), a driving device (2), a heating assembly (3) and fan blades (4), wherein the driving device (2) and the heating assembly (3) are arranged in the rear mesh enclosure (1), and a rotating shaft of the driving device (2) penetrates through the heating assembly (3) and then is connected with the fan blades (4); the fan blade type air-conditioning device is characterized in that a wind blocking piece (5) used for blocking radial air inlet of the radial air inlet channel (11) is further arranged on the outer circular surface of the radial air inlet channel (11), and one end of the wind blocking piece (5) is rotatably hinged with the rear mesh enclosure (1) through a fixed connecting piece (8); the utility model discloses a radial air inlet channel (11) of wind shield, including radial air inlet channel (11), wind shield piece (5) are towards keeping away from during the direction rotation of radial air inlet channel (11), wind shield piece (5) will the air inlet channel of radial air inlet channel (11) is opened, wind shield piece (5) counter-rotation extremely during the outer disc position of radial air inlet channel (11), wind shield piece (5) will the air inlet channel of radial air inlet channel (11) closes.

2. The air channel variable cooling and heating circulating fan according to claim 1, wherein the fixed connecting member (8) is a hinge mechanism disposed at one end of the radial air inlet channel (11), and the wind blocking plate (5) is rotated by one end of the radial air inlet channel (11) to control the opening and closing of the air inlet channel of the radial air inlet channel (11).

3. Air channel variable cooling and heating circulation fan according to claim 2, characterized in that the fixed connection piece (8) is arranged on the closed annular air channel (12), and the wind shield sheet (5) is positioned by the fixed connection piece (8) through the rotation angle.

4. The cooling and heating circulating fan with variable air duct according to claims 1-3, wherein the plurality of wind-blocking sheets (5) are arranged along the outer circumferential direction of the radial air intake channel (11), the fixed connecting piece (8) connected with each wind-blocking sheet (5) is respectively arranged at one end or two ends of the radial air intake channel (11), and each wind-blocking sheet (5) forms a rotary hinge with the rear mesh enclosure (1) through the fixed connecting piece (8).

5. Air channel variable cooling and heating circulation fan according to claim 4, characterized in that the wind deflector (5) is provided with at least 2 pieces which can be spliced into a circumference along the direction of the radial air inlet channel (11) in the circumferential direction.

6. The air channel variable cooling and heating circulating fan according to claim 5, wherein the rear mesh enclosure (1) is a shell-shaped structure with multiple holes and/or grids, a buckle (6) is further arranged at the other end opposite to the hinged end of the wind shield sheet (5), and when the wind shield sheet (5) is buckled at the radial air inlet channel (11), the buckle (6) and the holes or grids on the rear mesh enclosure (1) are clamped and fixed.

7. The air channel variable cooling and heating circulation fan according to claim 1, wherein the heating assembly (3) comprises a heating bracket (31) and a heating element (32), a circumferential closed axial ventilation channel (b) is formed in the heating bracket (31) and is communicated with axial inlet air entering from the rear mesh (13) of the rear mesh (1), the heating element (32) is fixed in the axial ventilation channel (b) of the heating bracket (31), and the heating bracket (31) and the rear mesh (1) form a detachable fixed connection, so that the axial inlet air generated by the fan blade (4) enters the closed annular air channel (12) through the axial ventilation channel (b) and the heating element (32) and is discharged.

8. Air channel variable cooling and heating circulation fan according to claim 7, characterized in that the axial air channel (b) is a conical air channel, and the ventilation cross-sectional dimension of the axial air channel (b) is gradually reduced in the direction towards the fan blades (4).

9. The air channel-variable cooling and heating circulating fan according to claim 1, wherein a front net (7) is further disposed on the inner side surface of the front end of the rear net (1), the outer circular surface of the front net (7) is detachably and fixedly connected with the inner side surface of the closed annular air channel (12), and when the radial air inlet channel (11) is opened, the driving device (2) drives the fan blades (4) to rotate to generate axial air and radial air which are discharged through the front net (7).

Technical Field

The invention relates to the technical field of air conditioning, in particular to a cold and warm circulating fan with a variable air duct.

Background

The warmer or the fan is a necessary electrical appliance for modern families, and at present, the warmer or the fan is a single warmer or a single fan on the market, so that products which can really integrate the warming function of the warmer and the blowing function of the fan are few and few, in particular to a cold-warm type circulating fan. The cooling and heating type circulating fan can be used as a heater and a fan, and has the advantages of cooling and heating, and multiple purposes. Because the cooling and heating type circulating fan is fixed in product structure, the axial flow fan blades synchronously supply air in the radial direction and the axial direction, and the air supply quantity is large. When hot air needs to be blown out, cold air is also mixed in the blown hot air, and particularly the body feeling of the periphery of the whole front net is not ideal.

For example, chinese patent document CN 206903897 discloses a natural wind/warm wind dual-purpose electric circulation fan, in which when the fan is used as a heater, radial inlet wind does not pass through a heating element, and thus cold wind is obviously mixed in blown hot wind, and the wind force is strong, so that the feeling of the user is not ideal. In order to solve the heating problem of the axial flow fan blade in the cooling and heating circulating fan, the existing cooling and heating circulating fan needs to be structurally optimized, and the comfort of people in heating is met on the premise of not influencing the cold air quantity.

Disclosure of Invention

The invention aims to solve the technical problems that the existing axial-flow type cooling and heating circulating fan is large in heating air quantity and poor in body feeling effect due to the fact that unheated cold air is doped, and therefore the invention provides the cooling and heating circulating fan with the variable air channel, which can realize adjustment of the cold air quantity and can well improve the body feeling effect of heating.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cooling and heating circulating fan with a variable air duct comprises a rear mesh enclosure, a driving device, a heating assembly and fan blades, wherein the driving device and the heating assembly are arranged in the rear mesh enclosure, and a rotating shaft of the driving device penetrates through the heating assembly and then is connected with the fan blades; a radial air inlet channel is further arranged on the rear mesh enclosure between the fan blades and the heating assembly, a closed annular air channel is formed at the front end of the rear mesh enclosure, the closed annular air channel is coaxially connected with the radial air inlet channel, a wind blocking sheet for blocking radial air inlet of the radial air inlet channel is further arranged on the outer circular surface of the radial air inlet channel, and one end of the wind blocking sheet is rotatably hinged with the rear mesh enclosure through a fixed connecting piece; when the wind blocking piece rotates towards the direction far away from the radial air inlet channel, the wind blocking piece opens the air inlet channel of the radial air inlet channel, and when the wind blocking piece reversely rotates to the outer circular surface position of the radial air inlet channel, the wind blocking piece closes the air inlet channel of the radial air inlet channel.

Preferably, the fixed connecting piece is a hinge mechanism which is arranged at one end of the radial air inlet channel, and the wind blocking piece controls the opening and closing of the air inlet channel of the radial air inlet channel through rotation at one end of the radial air inlet channel.

Further preferably, the fixed connecting piece is arranged on the outer side of the closed annular air duct, and the wind-blocking sheet is positioned at a rotation angle through the fixed connecting piece.

The wind shield piece along the outer circumference direction of radial inlet air channel sets up a plurality ofly, with every the wind shield piece is connected fixed connection spare set up respectively in radial inlet air channel's one end or both ends, each the wind shield piece passes through respectively fixed connection spare with the back screen panel forms rotatory articulated.

The wind shield pieces are arranged in the circumferential direction, and at least 2 wind shield pieces can be spliced into a circumference along the direction of the radial air inlet channel.

The rear mesh enclosure is of a shell-shaped structure with multiple holes and/or grids, a buckle is further arranged at the other end opposite to the hinged end of the wind shield, and when the wind shield is buckled at the radial air inlet channel, the buckle and the holes or the grids on the rear mesh enclosure are clamped and fixed.

The heating assembly comprises a heating support and a heating body, wherein a circumferential closed axial ventilation channel is formed in the heating support, the axial ventilation channel is communicated with axial air inlet entering through a rear mesh enclosure, the heating body is fixed in the axial ventilation channel of the heating support, the heating support is fixedly connected with the rear mesh enclosure in a detachable and fixed mode, and axial air inlet generated by the fan blades passes through the axial ventilation channel and enters the closed annular air channel to be discharged.

The axial ventilation channel is a conical air channel, and the size of the ventilation cross section of the axial ventilation channel is gradually reduced in the direction of approaching the fan blades.

The front end inner side surface of the rear mesh enclosure is further provided with a front mesh, a detachable fixed connection is formed between the outer circular surface of the front mesh and the inner side surface of the closed annular air duct, and when the radial air inlet channel is opened, the driving device drives the axial wind and the radial wind generated by the rotation of the fan blades to be discharged through the front mesh.

The technical scheme of the invention has the following advantages:

A. according to the invention, the plurality of wind-blocking sheets rotating along the direction vertical to the axial wind inlet are arranged at the circumferential position of the radial wind inlet channel of the rear mesh enclosure, the wind-blocking sheets can completely close all radial ventilation channels on the radial wind inlet channel, completely block radial wind from directly entering the sealed annular wind channel by surrounding the heating assembly, and only keep normally open axial wind to be completely heated by the heating assembly to form warm wind, so that the phenomenon of doping cold wind during warm wind can be completely avoided, the wind outlet effect is softer, and the user feeling is effectively improved; after the plurality of wind shields or a plurality of wind shields are opened, the air inlet channel and the air inlet volume can be increased, the radial and axial bidirectional air inlet is realized, and the air volume discharged by the front net is larger and cooler; the cold air and the warm air can be switched more conveniently.

B. According to the invention, the conical axial ventilation channel is established, so that the ambient air is effectively collected to form axial air inlet flow, and the axial air inlet flow is uniformly blown out in a concentrated manner, the blowing feeling is stronger, the structure is simple, and the structural form is novel; by controlling the opening quantity and the opening angle of the wind-shielding sheets, the total amount of the inlet air of the radial air inlet channel can be regulated and controlled in a cold air state, and meanwhile, the air inlet amount of a normally open axial ventilation channel is not reduced.

C. According to the invention, the wind shield sheet is arranged, and the conical axial ventilation channel is established in a matched manner, so that the performance of the product in a warm air state is fully optimized, meanwhile, the environment in a certain space range is quickly heated, the heating time is shortened, a user can be warmed in the shortest time, and the experience is more comfortable.

D. The invention has simple structure and low cost; the hinge type structure is adopted, so that the appearance of the product is not more limited, and the realization is easier.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.

FIG. 1 is a schematic view of a closed state of a windshield according to the present invention;

FIG. 2 is a schematic view of the present invention providing a windshield rotated to an intermediate position;

FIG. 3 is a schematic view of the windshield of the present invention in a maximum open state;

FIG. 4 is a schematic view of the present invention providing one of the louvers on the circumference fully opened;

FIG. 5 is a cross-sectional view of the complete machine provided by the present invention;

FIG. 6 is a schematic view of a clip provided on the wind deflector;

FIG. 7 is a schematic view of all flaps in a warm state when they are closed;

FIG. 8 is a schematic view of the radial air intake passage being fully open in a cold air condition;

fig. 9 is a schematic view of a radial air intake passage partially opened in a cold air condition.

The labels in the figure are as follows:

1-rear net cover, 11-radial air inlet channel, 111-grid bar, 12-closed annular air duct, 13-rear net; 2-a drive device; 3-heating component, 31-heating bracket, 32-heating element; 4-fan blades; 5-a wind shield sheet; 6-buckling; 7-front net, 71-net annulus; 8-fixing the connecting piece; 9-a machine base; a-a radial air duct; b-axial ventilation ducts.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 5, the invention provides a cooling and heating circulating fan with a variable air duct, which comprises a rear mesh enclosure 1, a driving device 2, a heating component 3 and a fan blade 4, wherein the rear mesh enclosure comprises a radial air inlet channel 11, a closed annular air duct 12 and a rear mesh 13, the driving device 2 and the heating component 3 are arranged in the rear mesh enclosure 1, and a rotating shaft of the driving device 2 penetrates through the heating component 3 and then is connected with the fan blade 4; the radial air inlet channel 11 is positioned on the rear mesh enclosure 1 between the fan blades 4 and the heating component 3, the closed annular air channel 12 is a section of air channel arranged at the front end of the rear mesh enclosure 1, the closed annular air channel 12 is coaxially connected with the radial air inlet channel 11, a wind shield 5 for preventing the radial air inlet of the radial air inlet channel 11 is further arranged on the outer circular surface of the radial air inlet channel 11, and one end of the wind shield 5 is rotatably hinged with the rear mesh enclosure 1 through a fixed connecting piece 8; when the wind-blocking sheet 5 rotates towards the direction far away from the radial wind-inlet channel 11, the wind-blocking sheet 5 opens the wind-inlet channel of the radial wind-inlet channel 11, and when the wind-blocking sheet 5 rotates reversely to the outer circular surface position of the radial wind-inlet channel 11, the wind-blocking sheet 5 closes the wind-inlet channel of the radial wind-inlet channel 11. As shown in fig. 1 and 7, the wind blocking sheet 5 blocks the radial ventilation channel a of the radial air intake channel 11 along the circumference completely, when the driving device drives the fan blade to rotate, only axial wind entering from the back net can be generated, the axial wind sequentially enters the heating component 3 and the closed annular air channel 12, and is finally discharged from the front net 7, and the state is suitable for a warm wind state, and when the heating component 3 works, the wind discharged from the front net 7 cannot be mixed with cold wind, so that the experience of a user is better. Of course, when the wind shield is opened, the wind can be simultaneously supplied in the radial direction and the axial direction, the air inlet amount is large, and the wind shield is very suitable for the cold wind state, as shown in fig. 2 and 8.

Fig. 2 is a schematic view of the windshield in a half-open state, and fig. 3 is a schematic view of the windshield in a state where the windshield is open to the maximum position.

The fixed connecting piece 8 is preferably a hinge mechanism which is arranged at one end of the radial air inlet channel 11, and the wind shield 5 controls the opening and closing of the air inlet channel of the radial air inlet channel 11 through rotation at one end of the radial air inlet channel 11. As shown in fig. 2, the fixed connector 8 is disposed outside the closed annular air duct 12, and the wind-blocking sheet 5 is positioned by the fixed connector 8 at a rotation angle. The hinge mechanism is in the prior art, the pin shaft penetrates through the positioning hole in the fixed block, the pin shaft and the positioning hole can be in interference fit with each other, and the hinge mechanism can also assist in positioning the opening angle and the hand feeling of the windshield sheet by means of torsion springs and the like, and the hinge mechanism is not particularly limited in the invention.

A plurality of wind blocking sheets 5 are arranged along the circumferential direction of a radial air inlet channel 11, and each wind blocking sheet 5 is rotatably hinged with the rear net cover 1 through a fixed connecting piece 8. According to the actual situation, at least 2 wind-blocking sheets 5 are arranged in the circumferential direction, all the wind-blocking sheets 5 can be spliced into a complete circular surface in the circumferential direction of the extended radial air inlet channel 11, 4 wind-blocking sheets 5 are equally arranged in the circumferential direction, and each wind-blocking sheet 5 can be independently opened and controlled. As shown in fig. 3, the 4 windshields are in a fully opened state, and in fig. 4, only one of the windshields 5 above the rear net cover is opened, and radial wind generated by the rotation of the blades enters only from above, and is then mixed with generated axial wind and discharged from the front net 7, as shown in fig. 9. If the wind-guard sheets 5 are arranged at the two ends of the radial wind-inlet channel 11, the opening directions of the adjacent wind-guard sheets 5 will be staggered (not shown in the figure), and of course, the hinge mechanism can also be arranged at the axial middle position of the radial wind-inlet channel 11, and the purpose of the invention can also be achieved, and the description is omitted here.

The rear mesh enclosure 1 of the present invention preferably has a shell-like structure with multiple holes and/or grids, as shown in fig. 6, a buckle 6 is further disposed at the other end opposite to the hinged end of the wind-blocking sheet 5, and when the wind-blocking sheet 5 is buckled at the radial air intake channel 11, the buckle 6 and the holes or grids on the rear mesh enclosure 1 form a snap-fit fixation, so that the wind-blocking sheet 5 has more stability, although other similar fixation methods may be adopted, which is not specifically limited in the present invention.

As shown in fig. 5, the heating assembly 4 includes a heating support 31 and a heating element 32, a circumferential closed axial air duct b is formed in the heating support 31 and is communicated with the axial air intake of the rear mesh enclosure 1, the heating element 32 is fixed in the axial air duct b of the heating support 31, and the heating support 31 and the rear mesh enclosure 1 form a detachable fixed connection, so that the axial air intake generated by the fan blades 4 enters from the rear mesh 13, then enters the closed annular air duct 12 through the axial air duct b and the heating element 32, and is discharged from the front mesh 7. The heating element adopted by the invention is the prior art, can be purchased from the market, and is not described again. In the present invention, the heating support 31 is preferably set to a cone-shaped structure, that is, the axial air duct b forms a cone-shaped air duct, and the size of the ventilation cross section of the axial air duct b is gradually reduced in the direction toward the fan blades 4, so that the normally open axial air is gradually concentrated and then discharged out of the machine body.

The front net 7 is arranged at the front end of the rear net cover 1, the front net 7 is detachably and fixedly connected with the closed annular air duct 12, and the air-conditioning device has the functions of safety protection and air outlet. As shown in fig. 3, the front net ring surface 71 of the front net 7 extends into the closed annular air duct 12 and is parallel to the inner side surface of the closed annular air duct 12 to form a detachable fixed connection mode, and the driving device 2 drives the fan blades 4 to rotate to form radial wind and axial wind, and the radial wind and the axial wind enter the inner cavity of the front net ring surface 71 and are discharged from the front net 7. Of course, the inner side of the front net 7 can also be fixedly connected with the outer side of the front end of the rear net cover, which is not described herein again.

The whole rear mesh enclosure 1 is preferably connected with the base 9 through a rotating mechanism, and the base 9 can be placed on a table, the ground or other positions.

The driving wind shield 5 can be driven to rotate along the hinge mechanism not only manually but also automatically, and the automatic driving can be formed by a transmission structure and a motor, for example, hydraulic damping telescopic rods and other devices are adopted; the invention is not described in detail, and the manual operation is only one embodiment of the driving mode;

in the invention, the sum of the plurality of wind-blocking sheets 5 is equal to the area of the radial air inlet channel 11, and each wind-blocking sheet 5 can movably rotate; each of the windshields 5 may rotate independently or synchronously, and the present invention is not limited thereto.

It should be noted that the radial air intake channel 11 is of a grid structure, as shown in fig. 6, the radial air intake channel 11 is composed of a plurality of grid bars 111 arranged along the axial direction, a radial air duct a is formed between adjacent grid bars 111, when the wind deflector 5 is lapped on the radial air intake channel 11 with the grid structure, two side edges of the wind deflector 5 need to be lapped on a local area on one side of the upper surface of the grid bars 111, and an edge of the wind deflector 5 butted with the wind deflector is lapped on a local area on the other side of the upper surface of the same grid bar 111, so that the radial air duct a can be completely covered, and the generation of radial wind is prevented. For the radial air inlet channel with the air holes, a closed lap joint area lapped with the edge position of the wind shield piece is also reserved, the purpose is to prevent the wind shield piece from covering the radial air inlet channel and preventing the radial wind from being generated, and the description is omitted.

The radial air inlet channel 11 can be closed and opened by the rotation of the wind shield 5, and because the circulating fan or the cold and warm circulating fan is radial and axial bidirectional air inlet, the axial air inlet is in a normally open state, and the following two conditions are divided for specific application description:

as shown in fig. 7, when the warm air is needed, the wind-blocking sheet 5 is manually rotated downward to be in a closed state, and after the radial air inlet channel 11 is closed, the air inlet channel and the air inlet volume can be reduced; the air coming out of the front net 7 can be warmer and the warm air is more uniform by only the normally open axial air inlet.

As shown in fig. 8, when cold air is needed, the wind shield 5 is manually opened, and after the radial air inlet channel 11 is opened, the air inlet channel and the air inlet amount can be increased; radial and axial bidirectional air inlet is realized, and the air quantity coming out of the front net 7 is larger and cooler.

As mentioned above, the process of opening and closing the radial air intake channel is the two most basic states of the implementation of the present invention; it can also be between these two states, as shown in fig. 9, that is, opening or closing part of the wind-blocking sheet, and the state of adjustable radial wind-inlet size can be selected arbitrarily in real time; the size and area of the opening and closing windshield are determined by the actual design requirements of the product, and the invention is not limited and described repeatedly herein.

The invention has provided a wind channel variable, especially can apply to the structure of the cooling-heating fan, in the round close to the blade, namely the radial air intake channel, set up multiple rotatable wind-blocking sheets 5 on the whole circumference of the radial air intake channel, can realize opening and closing the radial air intake channel 11 through rotating the wind-blocking sheet 5, use in carrying on the free switch between cold wind and warm wind to use, utilize the wind-blocking sheet 5 to close all radial air channels a in the radial air intake channel 11 completely, have the doped cold wind phenomenon and improve the product performance while improving the warm wind; the invention has simple and concise structure and simple principle, and integrally improves the experience of users and the product performance.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.