JP2021169814A - Cooling/heating circulation fan with variable air channel - Google Patents

Abstract

To adjust the cold air quantity to improve user's physical feeling in heating.SOLUTION: An annular radial air blowing passage 111 and an annular sealing air channel 112 are provided at a rear net cover 11 located between blades 14 and heating components 13. An annular wind shield ring 15 is provided at a position of the radial air blowing passage. In the annular wind shield ring, an axial dimension is set so as to be larger than or equal to an axial dimension of the radial air blowing passage. Furthermore, the annular wind shield ring can move in an axial direction to get in and out of the position of the radial air blowing passage. The annular wind shield ring 15 controls opening/closing of the radial air blowing passage by its arrangement to switch between cold air and warm air.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air conditioning technique, and specifically to a cooling / heating circulation fan having a variable air passage.

Heaters and electric fans are electric appliances necessary for modern home life, and the current commercial products are either a single heater or a single electric fan, and have both the heating function of the heater and the dryer function of the electric fan. There are few products, especially heating and cooling circulation fans. The air-conditioning circulation fan can be used both as a heater and as a fan, realizing versatility. The product structure of the air-conditioning circulation fan is fixed, and the axial fan blade always blows air in both the radial and axial directions at the same time, and the amount of air blown is large. When hot air is being blown, cold air is mixed in, and it is not very pleasant to feel, especially around the blowing net.

For example, in Chinese patent document CN206903897, an electric circulation fan for both natural air and hot air is disclosed, and when used as a heater, the radial air blower does not pass through the heating element, so that the hot air is blown out. , Cold wind is mixed and the wind power is strong, which makes the user uncomfortable. To solve the heating problem caused by the axial fan blades of the air-conditioning circulation fan, optimize the structure of the existing air-conditioning circulation fan to ensure the comfort during heating without affecting the air volume of the cold air. Is an issue

An object of the present invention is to solve a technical problem that the amount of air blown by heating in an existing axial-flow type air-conditioning circulation fan is large and the hot air blown out is mixed with cold air, causing discomfort to the user. And. Therefore, the present invention provides an air-conditioning circulation fan having a variable air passage, which can adjust the air volume of cold air and enhance the heating effect.

In order to achieve the above object, the present invention employs the following technical solutions.

Equipped with rear net cover, drive unit, heat generating parts and blades,
The drive device and the heat generating component are provided in the rear net cover, and the rotating shaft of the drive device penetrates the heat generating component and is connected to the blade, and is positioned between the blade and the heat generating component. The rear net cover is further provided with an annular radial air passage, and the front end of the rear net cover is formed with an annular closed air passage connected to the radial air passage. Being a fan
An annular windshield ring is further provided at the position of the radial blower passage, and the axial dimension of the annular windshield ring is greater than or equal to the axial dimension of the radial blower passage, and the annular windshield. The ring is a heating / cooling circulation fan having a variable air passage, which controls the opening and closing of the radial air passage by moving in and out from the position of the radial air passage in the axial direction.

Further, the annular windshield ring is a cylindrical annular shell that is sleeved on the outside or inside of the rear net cover to form an axial slide connection with the rear net cover.

The rear net cover is provided with guide grooves or guide bars arranged in the axial direction, and the shell of the annular windshield ring is provided with guide bars or guide grooves correspondingly. It is axially slidable along the rear net cover.

The heating component includes a heating bracket and a heating element, and an axial ventilation path sealed in the circumferential direction is formed in the heating bracket, and the heating element is fixed in the axial ventilation path of the heating bracket. Then, the air generated by the blade is allowed to enter the annular closed air passage through the axial ventilation path and the heating element and be discharged.

The annular windshield ring is arranged inside the heating bracket, the annular windshield ring is provided with a toggle handle, and the toggle handle radially penetrates an axial longitudinal hole provided in the heating bracket. Then, by projecting from the outer surface of the rear net cover and moving the toggle handle in the axial direction, the annular windshield ring is moved along the inner surface of the heat generating bracket, and the annular windshield ring is gradually moved. It is preferable to close or open the radial air passage on the rear net cover.

The axial ventilation passage is a conical air passage, and it is preferable that the dimension of the ventilation cross section of the axial ventilation passage decreases in the direction toward the blade.

The radial ventilation passage is preferably a plurality of rows of grills or exhaust holes arranged axially on the rear net cover.

A front net is provided at the tip of the rear net cover, and a detachable fixed connection is formed between the front net and the annular closed air passage.

The air-conditioning circulation fan has a variable air passage, and the air-conditioning circulation fan is further provided with a base that forms a rotary connection with the outer surface of the rear net cover.

The technical solution of the present invention has the following advantages.

1. In the present invention, an annular windshield ring is provided at the position of the radial air passage of the rear net cover, and the annular windshield ring controls the opening and closing of the radial air passage by moving in the axial direction to control the opening and closing of the radial air passage and cool air. By switching between hot air and hot air, the phenomenon of cold air mixing when hot air is blown can be completely avoided, and the user's experience can be improved efficiently, while when cold air is blown, through the annular windshield ring. The size of the air outlet of the radial air passage can be adjusted, and the air volume of cold air is adjusted in the radial direction to control the total air volume to be blown, and further improve the user's experience.

2. According to the present invention, by arranging a conical axial ventilation path, the surrounding air is efficiently collected to form a blast airflow, which blows out uniformly and intensively, has a strong blast feeling, and has a structure. Is simple and new. By moving the annular windshield ring in the axial direction, it is possible to control the opening and closing of the radial air passage and adjust the air volume to be blown in the radial direction without affecting the air volume blown from the axial air passage. It can be done and gives the user a softer feel when heating.

3. In the present invention, by arranging the annular windshield ring and the conical axial ventilation path, the performance of the product in the state where the warm air is blown is optimized, and the environment within a certain space range is optimized. The temperature rises rapidly, the temperature rise time is shortened, the user is warmed in the shortest time, and the experience is more comfortable.

In order to more clearly explain the embodiments of the present invention, the accompanying drawings necessary for explaining the embodiments of the present invention will be briefly described below. Obviously, the accompanying drawings in the following description show only some embodiments of the present invention, and those skilled in the art will still derive other drawings from these attached drawings without creative effort. May be good.
It is a three-dimensional view of the air-conditioning circulation fan provided by this invention. It is a three-dimensional view which shows the decomposition of the main body of FIG. It is a three-dimensional view which shows the annular windshield ring of FIG. It is a partial cross-sectional view in the state where the air is blown in the radial direction and the axial direction (the air flow is shown after the annular windshield ring is opened). It is a partial cross-sectional view in the state where the air is blown in the axial direction after the radial air passage is closed (shows the air flow after the annular windshield ring is closed). It is a figure which shows the state which the cold air is blown when the annular windshield ring is opened. It is a figure which shows the state which the warm air is blown when the annular windshield ring is closed.

Hereinafter, the technical means in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, but the described embodiments are only a part of the embodiments of the present invention. Not all embodiments. All other embodiments obtained by one of ordinary skill in the art based on embodiments of the invention without creative effort are within the scope of the invention.

As shown in FIGS. 1 and 2, the air-conditioning circulation fan having a variable air passage of the present invention generally includes a main body 1 and a base 2, and the main body 1 includes a rear net cover 11, a drive device 12, and a heat generating component. A detachable fixed connection is formed between the front net 17 and the annular closed air passage 112, including the 13 and the blade 14, and the front net 17, which provides safety protection and ventilation.
The drive device 12 and the heat generating component 13 are provided in the rear net cover 11, and the rotating shaft of the drive device 12 penetrates the heat generating component 13 and is connected to the blade 14.
An annular radial air passage 111 is further provided in the rear net cover located between the blade 14 and the heat generating component 13, and an annular closed air passage 112 is formed at the front end of the rear net cover 11. The annular closed air passage 112 is a tubular shell surrounded by a plate material having no holes.

The rear net cover 11 has a net-like structure, a sealed blower grill 113 is formed at the rear end, a motor 121 is provided at the bottom of the lumen of the rear net cover 11, and the motor cover 122 covers the motor 121. It is fixed to the rear net cover 11.

The annular closed air passage 112 and the radial air passage 111 are coaxially connected in the front-rear direction, and an annular windshield ring 15 is further provided at the position of the radial air passage 111 in the axial direction of the annular windshield ring 15. The dimensions are greater than or equal to the axial dimensions of the radial blower passage 111, and the annular windshield ring 15 moves axially in and out of the position of the radial blower passage 111, and the annular windshield. When the ring 15 completely enters the position of the radial air passage 111, the radial air passage 111 is completely shut off to control the closure of the radial air passage 111, and the outside air passes through the radial air passage 111. Prevents entry into the annular closed air passage 112. Of course, when the annular windshield ring 15 is moved in the opposite direction, the radial air passage 111 is opened.

Therefore, when heating, the annular windshield ring 15 is moved to the position of the radial air passage 111, and the annular windshield ring 15 completely covers the radial air passage 111 to prevent the air from being blown from the radial direction. The axial wind generated by the rotation of the blade enters from the blower grill 113 at the rear end of the rear net cover 11, and all of it passes through the heat generating parts so that the hot air blown out is not mixed with the cold air. .. Of course, when warm air is not required, the position of the annular windshield ring 15 can be adjusted according to the situation, and the radial air passage can be completely opened or the radial air passage can be partially opened. By doing so, the air volume of the air blown is adjusted according to the user's preference.

As shown in FIG. 4, the annular windshield ring 15 is movably provided at the position of the radial air passage 111 between the annular closed air passage 112 and the heat generating component 13, and is the size of the annular windshield ring 15. Is a size that can block the radial air passage 111, and the size here includes an area, a diameter, a size, a shape, and the like, and an object thereof is to block the radial air passage 111. The annular windshield ring 15 adopted in the present invention is preferably a tubular annular shell, which is sleeved on the outside or inside of the rear net cover to form an axial slide connection with the rear net cover 11, according to the present invention. Then, it is preferable to arrange the annular windshield ring 15 inside the rear net cover 11.

The rear net cover 11 is provided with guide grooves or guide bars arranged in the axial direction, and the shell of the annular windshield ring 15 is provided with guide bars or guide grooves correspondingly. The windshield ring 15 slides axially along the rear net cover 11 to open and close the radial air passage 111. Further, the guide features may be arranged on the heat generating bracket 131 and the annular windshield ring 15, the annular windshield ring 15 may have two or more guide features, and the guide features may be concave or convex. It may be. The guide features may match the corresponding guide features on the heating bracket 131, and the specific matching cross section and shape of the guide features are not limited in the present invention. The guide feature is merely an example in the present invention, and other features or methods having a guiding action may be used, and the present invention is not limited to the guide feature. The guiding action is to prevent the annular windshield ring 15 from rotating in the circumferential direction by allowing the annular windshield ring 15 to slide more smoothly in the front-rear direction.

As shown in FIG. 2, the heat generating component 13 includes a heat generating bracket 131 and a heating element 132, and an axial ventilation passage a sealed in the circumferential direction is formed in the heat generating bracket 131, as shown in FIG. The heating element 132 is fixed in the axial ventilation passage a of the heating bracket 131, and a detachable fixed connection is formed between the heating bracket 131 and the rear net cover 11, so that the wind generated by the blade 14 can be squeezed. It enters the annular closed air passage 112 through the directional air passage a and the heating element 132 so as to be discharged. Here, the structural feature of the heating element 132 will not be described in detail using the prior art.

Explaining the case where the annular windshield ring 15 is arranged on the inner surface of the heat generating bracket 131 as an example, in the present invention, the toggle handle 16 is further provided on the annular windshield ring 15, and the toggle handle 16 is on the heat generating bracket 131. The annular windshield ring 15 is moved along the side surface of the heat generating bracket 131 by radially penetrating the axial longitudinal hole b of the rear net cover 11 and projecting from the outer surface of the rear net cover 11 and moving the toggle handle 16 in the axial direction. , The annular windshield ring 15 gradually closes or opens the radial air passage 111 on the rear net cover 11. The toggle handle 16 here is preferably fixed to the edge of the annular windshield ring 15, and the toggle handle 16 is one or more, and is not limited herein. The annular windshield ring 15 and the toggle handle 16 may be one component or may be a component composed of separated components, and are not limited in the present invention. The toggle handle 16 is only for convenient movement of the annular windshield ring 15.

As is clear from the structure of the heating bracket 131, as shown in FIGS. 6 and 7, the axial ventilation passage a formed inside the heating bracket is a conical air passage, and the ventilation of the axial ventilation passage a. The size of the cross section decreases in the direction toward the blade 14, and the surrounding air is efficiently collected to form a blown airflow, so that the feeling of blowing becomes stronger.

Here, the radial ventilation passage 111 is a plurality of rows of grills or exhaust holes provided in the rear net cover 11 in the axial direction, and does not specifically limit the size of the mesh of the ventilation structure of the rear net cover 11.

A rotary connection is formed between the outer surface of the rear net cover 11 and the base 2, and the structure of the base 2 is a prior art and will not be described in detail here.

As shown in FIG. 2, the motor 121 and the shaft, the front net 17, the rear net cover 11, and the blade 14 in the present invention are arranged along the central axis, and in particular, the rear net cover 11 and the heat generating bracket 131. , The annular closed air passage 112 is arranged along one central axis.

The annular windshield ring 15 moves or slides along the direction of the central axis by assisting the guide feature of the guide groove or guide bar and by the action of the toggle handle 16 to close or open the radial air passage 111 and have a diameter. Adjust the air volume of the air blown in the direction. Of course, the ring-shaped windshield ring 15 may be controlled by manual drive, or an automatic drive method may be adopted. When the annular windshield ring 15 is moved by an automatic drive method, the automatic drive device may be composed of a transmission structure and a motor drive. For example, the annular windshield ring 15 is moved in the front-rear direction via an electric push rod. I will not explain in detail here.

As shown in FIGS. 5 and 7, when warm air is required, the annular windshield ring 15 is manually moved, the radial air passage 111 is closed, and only the axial air is realized, and the area of the air is blown. The air volume can be reduced, the air blown from the front net 17 can be made warmer, and the warm air can be made more uniform.
As shown in FIGS. 4 and 6, when cold air is required, the annular windshield ring 15 is manually moved to open the radial air passage 111 to simultaneously blow air in the radial and axial directions. The area and volume of the blast can be increased to make the wind blown from the front net 17 larger and cooler.

As described above, the state in which the radial air passage is opened or closed is the two most basic forms for carrying out the present invention, and of course, between these two states, the radial direction is arbitrarily selected. The air volume of the blast may be adjusted, the size of the opening and closing of the radial blast passage depends on the actual needs of the product design, and the choice of manual or automatic opening and closing method also depends on the valuation of the product.

The above-described embodiment is presented for explaining the present invention, and the present invention is not limited to each of the above-described embodiments, and various modifications can be made within the scope of the claims. , The embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the scope of protection of the present invention.

1 Main body 11 Rear net cover 111 Radial direction air passage 112 Circular air passage 113 Air grill 12 Drive unit 121 Motor 122 Motor cover 13 Heat generation parts 131 Heat generation bracket 132 Heat generator 14 Blade 15 Circular windshield ring 16 Toggle handle 17 Front Net 2 Base a Axial ventilation path b Axial longitudinal hole c Guide groove or guide bar

Claims (9)

A rear net cover (11), a drive device (12), a heat generating component (13), and a blade (14) are provided.
The drive device (12) and the heat generating component (13) are provided in the rear net cover (11), and the rotating shaft of the drive device (12) penetrates the heat generating component (13) and the blade. Connected to (14)
The rear net cover (11) is located between the blade (14) and the heat generating component (13), and the rear net cover (11) is provided with an annular radial air passage (111). The front end of the rear net cover (11) is an air passage variable heating / cooling circulation fan in which an annular closed air passage (112) connected to the radial air passage (111) is formed.
An annular windshield ring (15) is further provided at the position of the radial air blower passage (111), and the axial dimension of the annular windshield ring (15) is the axial direction of the radial air blower passage (111). The annular windshield ring (15), which is greater than or equal to the dimensions, moves in and out of the position of the radial air passage (111) in the axial direction so as to move in and out of the radial air passage (15). A cooling / heating circulation fan with a variable air passage, which is characterized by controlling the opening / closing of 111). The annular windshield ring (15) is a cylindrical annular shell that is sleeved on the outside or inside of the rear net cover (11) to form an axial slide connection with the rear net cover (11). The air-conditioning circulation fan having a variable air passage according to claim 1. The rear net cover (11) is provided with a guide groove or a guide bar in the axial direction, and the shell of the annular windshield ring (15) is provided with a guide bar or a guide groove correspondingly, and the annular windshield is provided. The air passage variable heating / cooling circulation fan according to claim 2, wherein the ring (15) can slide in the axial direction along the rear net cover (11). The heating component (13) includes a heating bracket (131) and a heating element (132).
An axial ventilation passage (a) sealed in the circumferential direction is formed in the heating bracket (131), and the heating element (132) is placed in the axial ventilation passage (a) of the heating bracket (131). Fixed,
The heat generating bracket (131) is formed with a detachable fixed connection to the rear net cover (11), and the wind generated by the blade (14) is passed through the axial ventilation path (a) and the heating element (132). The heating / cooling circulation fan having a variable air passage according to claim 1, wherein the fan enters the annular closed air passage (112) and is discharged. The annular windshield ring (15) is arranged inside the heat generating bracket (131), and the annular windshield ring (15) is provided with a toggle handle (16).
The toggle handle (16) radially penetrates the axial longitudinal hole (b) provided in the heat generating bracket (131) and projects from the outer surface of the rear net cover (11).
By moving the toggle handle (16) in the axial direction, the annular windshield ring (15) is moved along the inner surface of the heat generating bracket (131), and the annular windshield ring (15) is gradually moved to the rear portion. The air passage variable heating / cooling circulation fan according to claim 4, wherein the radial air passage (111) on the net cover (11) is closed or opened. The axial ventilation passage (a) is a conical air passage, and the dimension of the ventilation cross section of the axial ventilation passage (a) decreases in the direction toward the blade (14). The cooling / heating circulation fan having a variable air passage according to claim 5. The invention according to any one of claims 1 to 6, wherein the radial air passage (111) is a plurality of rows of grills or exhaust holes arranged axially on the rear net cover (11). Air flow variable heating and cooling circulation fan. A front net (17) is provided at the tip of the rear net cover (11), and a detachable fixed connection is formed between the front net (17) and the annular closed air passage (112). The air-conditioning circulation fan having a variable air passage according to claim 7. It is an air-conditioning circulation fan with variable air passage.
The air-conditioning circulation fan is further provided with a base (2) forming a rotary connection with the outer surface of the rear net cover (11).
The air-conditioning circulation fan having a variable air passage according to claim 1.

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