CN114738997A

CN114738997A - Fan and using method thereof

Info

Publication number: CN114738997A
Application number: CN202210240435.8A
Authority: CN
Inventors: 应辉; 周小锋
Original assignee: Zhejiang Crossbow Brand Electric Appliance Co ltd
Current assignee: Zhejiang Crossbow Brand Electric Appliance Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-12

Abstract

The invention provides a fan and a use method thereof, wherein the fan comprises: a body including an air inlet, an air outlet, a fan for generating an air flow, and a heating unit for heating the air flow; and at least one air emitting member detachably coupled to the air outlet of the body for receiving the air flow heated by the body and emitting the air flow. The air transmitting piece and the body part can be separated, different types of air transmitting pieces can be replaced, and the air transmitting piece with different functions can be connected to adapt to different use scenes.

Description

Fan and using method thereof

Technical Field

The invention relates to the field of air conditioning equipment, in particular to a fan and a using method thereof.

Background

With the continuous improvement of the living and scientific and technological levels, the requirements of people on living quality are increasingly improved, and the indoor air quality becomes an important concern of people. Particularly, the haze and PM2.5 problems in recent years have increased, and people are increasingly demanding air purifiers.

An air purifier is a small household appliance for purifying indoor air, and mainly solves the problem of indoor air pollution caused by decoration or other reasons. Because of the persistent and uncertain nature of the release of pollutants in indoor air, the use of air purifiers to purify indoor air is an internationally recognized method of improving indoor air quality. There are a number of different technologies and media in air purifiers that enable them to provide clean and safe air to users. Common air purification techniques are: low-temperature asymmetric plasma air purification technology, adsorption technology, negative ion technology, negative oxygen ion technology, molecular complexation technology, nano TiO2 technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, active oxygen technology and the like; the material technology mainly comprises the following steps: the cost of high-quality filter screen can account for 20% to 30% of the total cost of the air purifier, such as photocatalyst, active carbon, synthetic fiber, HEPA high-efficiency material, etc.

At present, a plurality of bladeless fans which are provided with air filter screens and can be used for both cooling and heating have appeared. FIG. 1 is a cross-sectional view of a bladeless fan according to the prior art. As shown in fig. 1, most of which have an annular nozzle 901, a housing 903, a base 904, a screen 905, a fan motor 906, and a mesh inner container 907. Wherein, the shell 903 with air inlet mesh is arranged on the base 904, a filter screen 905 is arranged in the shell 903, a mesh inner container 907 is arranged in the filter screen 905, a first air inlet of a fan motor 906 is arranged in the mesh inner container 907, the annular nozzle 901 is arranged above the gravity direction of the fan motor 906, an air outlet of the fan motor 906 is communicated with the nozzle 901, and a heating unit arranged in a strip shape is arranged in the nozzle 901. Indoor air enters the mesh inner container 907 after sequentially passing through meshes of the outer shell 903 and the filter screen 905, an air inlet of the fan motor 906 sucks in the air along the antigravity direction, then the air is conveyed to one end of the annular nozzle 901 along the antigravity direction (vertically upwards), and then the air is sprayed out after being dispersed to all positions of the annular nozzle 901.

There are at least the following technical problems to be improved in the structure of the prior art:

(1) as the bladeless fan is provided with the large-volume heating unit close to the air outlet in order to realize dual purposes of cooling and heating, the heating unit is used as a high-power electric element and needs a power supply circuit to be connected to the power supply point module of the base. Under the structure, due to the existence of a power supply circuit for communicating the nozzle with the lower machine body, the nozzle and the lower machine body cannot be detached, the nozzle cannot be replaced, and the use scene of the bladeless fan is limited.

(2) The whole machine is huge in volume and high in transportation and storage cost due to the fact that the whole machine cannot be disassembled.

(3) Because the heating unit (containing a plurality of metal elements) with larger mass is arranged on the nozzle, the gravity center of the whole machine is moved upwards and the whole machine is easy to topple.

(4) Moreover, because the heating unit is close to the air outlet, the user can be scalded when extending the hand into the air outlet carelessly, and potential safety hazards exist.

(5) Because the nozzle can change the direction of air flow, the air quantity in the middle of the nozzle is larger, and the air quantities at the bottom and the top are smaller, so that the larger air quantity in the middle of the heating unit arranged in a strip shape in the middle can bring away larger heat, and high-heat hot air (H) is blown out; on the contrary, the air outlet quantity at the upper end and the lower end is small, only low-heat hot air (L) can be blown out, and the service life of the heating unit is also reduced due to the fact that the air outlet temperature is uneven and the local heat at the two ends of the heating unit arranged in a strip shape is gathered.

Accordingly, the present invention provides a fan and a method of using the same.

Disclosure of Invention

The invention aims to provide a fan and a using method thereof, which solve the problems in the prior art that an air emitting piece and a body part can be detached, the replacement of different types of air emitting pieces is realized, and the fan can be suitable for different use scenes by connecting air emitting pieces with different functions.

An embodiment of the present invention provides a fan including:

a body including an air inlet, an air outlet, a fan for generating an air flow, and a heating unit for heating the air flow; and

at least one air emitting member detachably connected to the air outlet of the body for receiving the air flow heated by the body and emitting the air flow.

Preferably, the heating unit is disposed downstream of the blower.

Preferably, the heating unit is connected to the power supply module by a heating power supply circuit provided only in the body.

Preferably, the air flow passes through the heating unit in the antigravity direction and then is emitted to the air emitting members, and at least one of the air emitting members is a nozzle which receives the air flow heated by the body and guides the air flow to be emitted horizontally.

Preferably, the nozzle comprises a collapsible tube which is telescopic in the direction of gravity.

Preferably, the lower end of the air emitting piece is provided with a plurality of L-shaped clamping jaws, an air outlet on the upper surface of the body is provided with an L-shaped clamping groove, and the air emitting piece is rotationally clamped with the air outlet of the body.

Preferably, the body further comprises a filter downstream of the air inlet and upstream of the fan;

air entering from the air inlet enters the fan after passing through the filter along the antigravity direction.

Preferably, the air inlet is arranged on the bottom surface of the body, and sucks air to a first air collecting cavity along the antigravity direction, the air in the first air collecting cavity passes through the filter, and is sucked to the fan after reaching a second air collecting cavity, and the second air collecting cavity is stacked above the first air collecting cavity.

Preferably, the body further comprises a sealed enclosure which sealingly surrounds the fan and heating unit circumferentially.

Preferably, the device further comprises a base, the body being rotatably connected above the base.

Preferably, the air emitting member may also be at least one of a porous pipe for warming the quilt, a plunger for drying shoes, a spray gun for drying hair, and a drying box for drying pet hair.

The embodiment of the invention also provides a use method of the fan, and the fan comprises the following steps:

separating an air emitting member currently connected to an air outlet of the body; and

another air emitting member is connected to the air outlet of the body.

The fan and the use method thereof can separate the air emitting piece and the body part, realize the replacement of different types of air emitting pieces, and can be suitable for different use scenes by connecting the air emitting pieces with different functions.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a bladeless fan according to the prior art.

Fig. 2 is a cross-sectional view of the fan of the present invention.

Fig. 3 is a perspective view of the fan of the present invention.

Fig. 4 is a sectional view taken along the line a-a in fig. 3.

Fig. 5 is an exploded view of the fan of the present invention.

Fig. 6 is a sectional view taken along line B-B in fig. 5.

Reference numerals

1 air emitting member

17L-shaped claw

18 clasp

2 body part

20 sealed housing

21 bayonet

22L-shaped clamping groove

23 first gas collecting cavity

24 second gas collecting cavity

27 annular air inlet grille

28 air inlet

29 air outlet

3 heating unit

5 blower fan

6 Filter

7 base

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings so that those skilled in the art to which the present application pertains can easily carry out the present application. The present application may be embodied in many different forms and is not limited to the embodiments described herein.

Reference throughout this specification to "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Furthermore, the particular features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of different embodiments or examples presented in this application can be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the expressions of the present application, "plurality" means two or more unless specifically defined otherwise.

In order to clearly explain the present application, components that are not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

Throughout the specification, when a device is referred to as being "connected" to another device, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. In addition, when a device "includes" a certain component, unless otherwise stated, the device does not exclude other components, but may include other components.

When a device is said to be "on" another device, this may be directly on the other device, but may also be accompanied by other devices in between. When a device is said to be "directly on" another device, there are no other devices in between.

Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface are represented. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" include plural forms as long as the words do not expressly indicate a contrary meaning. The term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and/or components.

Although not defined differently, including technical and scientific terms used herein, all terms have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms defined in commonly used dictionaries are to be additionally interpreted as having meanings consistent with those of related art documents and the contents of the present prompts, and must not be excessively interpreted as having ideal or very formulaic meanings unless defined.

Fig. 2 is a cross-sectional view of the fan of the present invention. Fig. 3 is a perspective view of the fan of the present invention. Fig. 4 is a sectional view taken along the line a-a in fig. 3. Fig. 5 is an exploded view of the fan of the present invention. Fig. 6 is a sectional view taken along line B-B in fig. 5. As shown in fig. 2 to 6, the fan of the present invention includes: a body 2 and at least one air emitting member 1. The body 2 comprises an air inlet 28, an air outlet 29, a fan 5 for generating an air flow, and a heating unit 3 for heating the air flow. The air emitting member 1 is detachably connected to an air outlet 29 of the body 2 for receiving the air flow heated by the body 2 and emitting the air flow. The fan nozzle and the lower machine body can be detached, the nozzle can be replaced, and the use scene of the bladeless fan is expanded. And because the heating unit is put down in somatic part 2, can make full use of somatic part 2's inner space, install the board-like heat-generating body that effective heating area is bigger (the heating effect of board-like heat-generating body will obviously be higher than the heating effect of bar heat-generating body among the prior art), strengthen energy conversion rate to, make the focus of complete machine move down, be difficult for empting. The heating unit is further far away from the air outlet, so that potential safety hazards are reduced. Moreover, the heating unit 3 in the invention can be a plate-shaped PTC heating element, and the air flow uniformly takes away all heat uniformly through the positive PTC heating element, thereby ensuring the heat transfer effect and prolonging the service life of the heating unit.

The heating unit 3 of the invention is provided with a PTC (positive Temperature coefficient) heating element and consists of a PTC ceramic heating element and an aluminum tube. The PTC heating element has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and electricity-saving electric heater. The PTC heating body product adopts the U-shaped corrugated radiating fins, so that the heat dissipation rate is improved, the advantages of adhesion and mechanical type are integrated, various thermal and electrical phenomena of the PTC heating element during working are fully considered, the bonding force is strong, the heat conduction and the heat dissipation performance are excellent, the efficiency is high, and the PTC heating body product is safe and reliable. The PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and electricity-saving electric heater. The PTC heater has the prominent characteristic of safety performance, namely, when the fan stops due to failure, the PTC heater can automatically and rapidly reduce the power because the PTC heater cannot fully dissipate heat, and the surface temperature of the heater is maintained at about the Curie temperature (generally about 250 ℃), so that the surface of the heater such as an electric heating tube heater cannot be red. The PTC heating body consists of a galvanized outer pressing plate, a stainless steel corrugated spring piece, a galvanized inner pressing plate, a single-layer aluminum heat dissipation piece, a PTC heating piece, a double-layer aluminum heat dissipation piece, a nickel-plated copper electrode terminal and a PPS high-temperature plastic electrode sheath.

In a preferred embodiment, the heating unit 3 is arranged downstream of the fan 5, the heating unit 3 being connected to the power supply module by a heating power supply circuit arranged only inside the body 2. Under the structure of the invention, no power supply circuit of the air emitting piece 1 and the body part 2 is needed to be arranged, the air emitting piece 1 can be provided with no circuit, the circuit part of the whole fan is only arranged in the body part 2, and the body part 2 does not need to supply power to the air emitting piece 1, thereby greatly simplifying the whole circuit, but not being limited by the structure.

In a preferred embodiment, the air flow is emitted to the air emitters 1 through the heating unit 3 in the antigravity direction (X direction), and at least one of the air emitters 1 is a nozzle which receives the air flow heated by the body 2 and directs the air flow to be emitted horizontally, but not limited thereto.

In a variant in which the nozzle comprises a collapsible tube (not shown) that can be extended and retracted in the direction of gravity, the nozzle can be made collapsible in a mechanical way, for example: the sliding structure of the inner pipe and the outer pipe enables the fan to fold and compress the nozzle when not in use, further reducing the volume, but not limited to this.

In a preferred embodiment, the lower end of the air emitting piece 1 is provided with a clamping ring 18 and a plurality of L-shaped clamping jaws 17, the air outlet 29 on the upper surface of the body 2 is provided with a bayonet 21 and an L-shaped clamping groove 22, the clamping ring 18 is butted with the bayonet 21 along the vertical direction, and then the L-shaped clamping jaws 17 are rotationally clamped along the L-shaped clamping groove 22 along the horizontal direction, so that the air emitting piece 1 and the air outlet 29 of the body 2 are clamped into a whole, and the mechanical connection of the air emitting piece 1 and the body 2 is realized.

In a preferred embodiment, the body 2 further comprises a filter 6, the filter 6 is located downstream of the air inlet 28 and upstream of the fan 5, the air entering from the air inlet 28 enters the fan 5 after passing through the filter 6 in the anti-gravity direction (X direction), and an annular air inlet grille 27 for dust prevention is provided at the air inlet 28, but not limited thereto.

In a preferred embodiment, the air inlet 28 is disposed on the bottom surface of the body 2, and sucks air in the direction of counter-gravity (X direction) to a first air collecting chamber 23, the air in the first air collecting chamber 23 passes through the filter 6 and is sucked into the fan 5 after reaching a second air collecting chamber 24, and the second air collecting chamber 24 is stacked above the first air collecting chamber 23, so that the air inlet 28 is as far away from the nozzle as possible, thereby preventing the air inlet 28 from sucking in heated air flow and ensuring the air supply effect, but not limited thereto.

In a preferred embodiment, the body 2 further comprises a sealing enclosure 20, the sealing enclosure 20 surrounding the blower 5 and the heating unit 3 in a circumferential sealing manner, but not limited thereto.

In a preferred embodiment, a base 7 is further included, and the body 2 is rotatably connected above the base 7, but not limited thereto.

In a preferred embodiment, the air emitting member may be at least one of a porous pipe for warming quilt, a rod for drying shoes, a spray gun for drying hair, and a drying box for drying pet hair, but not limited thereto.

In a preferred embodiment, the nozzle is provided in a double-walled structure in which an outer chamber surrounds an inner chamber, so that heat inside the nozzle is confined by the inner chamber, and a user can only touch the outer chamber, which is the outer housing of the air-emitting member 1, and, based on the heat insulation structure between the outer chamber and the inner chamber, heat is prevented from being transferred to the outside, thereby optimizing the heat transfer direction and enhancing the safety of use. Furthermore, the L-shaped claws 17 are integrally formed at the bottom of the inner cavity, and the snap ring 18 is integrally formed at the bottom of the outer cavity.

In a preferred embodiment, the first projection pattern of the first cross section of the air outlet of the blower 5 in the horizontal plane is included in the second projection pattern of the second cross section of the heating unit 3 in the horizontal plane, and the first cross section area of the air outlet of the blower 5 is smaller than the area of the second cross section of the heating unit 3, so that the internal space of the body 2 is fully utilized, a plate-type heating element with a larger effective heating area is installed (the heating effect of the plate-type heating element is significantly higher than that of a strip-type heating element in the prior art), and the heating effect is enhanced.

In a preferred embodiment, a PTC heating element with a square horizontal section is arranged in the heating unit 3, and the side length of the square is more than or equal to the diameter of the circular air outlet of the fan 5.

The embodiment of the invention also provides a using method of the fan, and the fan comprises the following steps:

s110, separating an air emitting piece which is connected with an air outlet of the body part at present; and S120, connecting another air emitting member to the air outlet of the body.

Referring to fig. 5 and 6, the method for using the fan of the present invention, which uses the above fan, includes the following processes: the air emitting member 1, which is now connected to the air outlet 29 of the body 2, is separated (see fig. 5, 6). Then, another air emitting member (not shown) is connected to the air outlet 29 of the body 2, the other air emitting member may be one of a porous pipe for warming quilt, a rod for drying shoes, a spray gun for drying hair, and a drying box for drying pet hair, and when the new air emitting member is connected to the body 2, the air flow heated by the body 2 enters the new air emitting member and emits the air flow according to the functional structure of the new air emitting member, thereby realizing the switching of the fan in different use scenes (changing to warming quilt or drying hair, etc.).

In summary, the present invention is directed to a fan and a method for using the same, which can disassemble an air emitting member and a body, so as to replace different types of air emitting members, and can be adapted to different usage scenarios by connecting air emitting members with different functions.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.

Claims

1. A fan, comprising:

a body (2) comprising an air inlet (28), an air outlet (29), a fan (5) for generating an air flow and a heating unit (3) for heating the air flow; and

at least one air emitting member (1) detachably connected to the air outlet (29) of the body (2) for receiving the air flow heated by the body (2) and emitting the air flow.

2. The fan according to claim 1, characterized in that the heating unit (3) is arranged downstream of the fan (5).

3. The fan according to claim 1, characterized in that the heating unit (3) is connected to a power supply module by a heating power supply circuit provided only in the body (2).

4. The fan according to claim 1, characterized in that said air flow is emitted to said air emitters (1) after passing through said heating unit (3) in the antigravity direction, at least one of said air emitters (1) being a nozzle which receives the air flow heated by said body (2) and directs it horizontally.

5. The fan of claim 4 wherein said nozzle comprises a collapsible tube that is retractable in the direction of gravity.

6. The fan as claimed in claim 1, wherein the lower end of the air emitting member (1) is provided with a plurality of L-shaped jaws (17), an air outlet (29) at the upper surface of the body (2) is provided with an L-shaped catching groove (22), and the air emitting member (1) is rotatably caught to the air outlet (29) of the body (2).

7. The fan according to claim 1, characterised in that the body (2) further comprises a filter (6), the filter (6) being located downstream of the air inlet (28) and upstream of the fan (5);

air entering from the air inlet (28) passes through the filter (6) in the anti-gravity direction and enters the fan (5).

8. The fan according to claim 7, characterized in that the air inlet (28) is arranged on the bottom of the body (2) and draws air in the counter-gravity direction to a first air collection chamber (23), the air in the first air collection chamber (23) passing through the filter (6) and being drawn into the fan (5) after reaching a second air collection chamber (24), the second air collection chamber (24) being stacked above the first air collection chamber (23).

9. The fan according to claim 1, characterized in that said body (2) further comprises a sealed casing (20), said sealed casing (20) surrounding said fan (5) and said heating unit (3) in a circumferential seal.

10. A method of using a fan, using the fan of claim 1, comprising the steps of:

-detaching the air emitting member (1) currently connected to the air outlet (29) of the body (2); and

connecting another air emitting member (1) to an air outlet (29) of the body (2).