TWM506944U - Fan with predetermined thermal circulation channel - Google Patents

Description

Fan with preheating ring runner

The present invention relates to a fan, and more particularly to a fan having a preheating ring flow path.

The electric heater is an electric appliance for improving the ambient temperature. The electric heaters commonly used in the market can be classified into a halogen lamp type, a ceramic type, and a blade type according to different heating principles, and the electric heater is mostly capable of having one energy. A heating element that converts electrical energy into thermal energy. When cold air passes through the heating element and absorbs sufficient thermal energy, the cold air can become a warm air with a higher temperature, and when warm air is continuously generated and gathered near the user, The user will feel the rise in ambient temperature.

However, the electric heater is in practical use because cold air is in contact with the heating element in a large amount and directly, which causes the heat energy generated by the heating element to be accumulated efficiently and quickly, and therefore, the user often It is necessary to increase the power consumption or take longer to allow the heating element to accumulate enough heat energy to become a stable heat source. Only when the heating element becomes a stable heat source can it ensure that the cold air passing through the heating element can become a warm air with a higher temperature, otherwise the user still has Opportunity to contact cold air with lower temperatures.

It can be seen from the above that since the heating element of the electric heater directly contacts the cold air, the user needs to spend more time and power to make the heating element become the stable heat source. The benefits of warm air in electric heaters are limited.

Therefore, the purpose of the present invention is to provide a fan having a preheating ring flow path that can effectively enhance the benefits of warm air.

Therefore, the novel fan having a preheating ring flow path includes a base unit, a cover unit, a preheating inner tub, a fan unit, and a heating unit.

The base unit surrounds an axis and includes at least one air inlet, and an outer tub defining an accommodation space.

The cover unit surrounds the axis and is disposed on the base unit. The cover unit includes a chamber communicating with the accommodating space, an air outlet communicating with the chamber, and a middle seat surrounding the axis.

The middle seat of the cover unit has an inner ring wall adjacent to the axis, an outer ring wall away from the axis, and a connecting wall connecting the inner ring wall and the outer ring wall, wherein the outer ring wall is disposed on the outer ring wall Outer bucket.

The preheating inner tub surrounds the axis and includes a top portion of the inner ring wall disposed on the center seat and an extension extending from the top of the inner ring wall away from the chamber.

The preheating inner tub divides the accommodating space into an adjacent axis The heating chamber is connected to a preheating ring flow path away from the axis, and the heating chamber is in communication with the preheating ring flow path. The preheating inner flow path is defined by the preheating inner tub, the connecting wall and the outer tub.

The fan unit is disposed in the housing of the cover unit.

The heating unit includes a heating element disposed in the heating chamber, wherein when the fan unit is activated, air flows from the air inlet of the base unit to the preheating ring flow path, and then sequentially through the heating chamber After the chamber, it flows out from the air outlet.

The novel has the effect of preheating the fan of the circulation channel. The cold air first flows into the preheating ring flow path instead of directly contacting the heating element, so the heating element can effectively accumulate heat energy, and more preferably, The heat energy can be further radiated to the preheating inner tub, and the preheating inner tub which obtains heat energy continues to heat the air in the preheating ring flow path, thereby effectively improving the benefit of the warm air and ensuring the outflow The air is warm air instead of cold air.

1‧‧‧Base unit

11‧‧‧air inlet

12‧‧‧Chassis

121‧‧‧outer groove

122‧‧‧ Inside groove

123‧‧‧ Medium groove

13‧‧‧ outer barrel

131‧‧‧ accommodating space

132‧‧‧Top edge

133‧‧‧ bottom edge

134‧‧‧heating room

135‧‧‧Preheating circulation channel

136‧‧‧post preheating section

137‧‧‧Preheating section

14‧‧‧中桶

141‧‧‧Insert Card Department

142‧‧‧Extension Department

15‧‧‧Foot

16‧‧‧Insulated shell

17‧‧‧Chassis

171‧‧‧ outer groove

172‧‧‧ Inside groove

2‧‧‧ Seat unit

21‧‧ ‧ room

22‧‧‧air outlet

221‧‧‧Air outlet

23‧‧‧中座

231‧‧‧ Inner Ring Wall

232‧‧‧ outer ring wall

233‧‧‧Connecting wall

234‧‧‧Top edge

235‧‧‧ pillar

236‧‧‧ vertical

24‧‧‧ top seat

25‧‧‧Upper cover

251‧‧‧ breathable window

26‧‧‧Handles

3‧‧‧Preheating the inner barrel

31‧‧‧ top

32‧‧‧Extension

4‧‧‧Fan unit

41‧‧‧fan

42‧‧‧Motor

43‧‧‧Fan control circuit board

5‧‧‧heating unit

51‧‧‧ heating elements

52‧‧‧reflector

521‧‧‧ convex

53‧‧‧cross bar

54‧‧‧heat control circuit board

L‧‧‧ axis

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is an exploded perspective view showing a first embodiment of the novel fan having a preheating ring flow path; 2 is a cross-sectional view showing a preheating inner tub of the first embodiment partitioning an accommodating space into a heating chamber and a preheating ring flow path; and FIG. 3 is a plan view illustrating the preheating of the first embodiment. The inner tub surrounds a heating element; Figure 4 is a cross-sectional view showing the flow path of the air in the direction of the arrow in the first embodiment; Figure 5 is a cross-sectional view showing a second embodiment of the fan having the preheating ring flow path; 6 is a cross-sectional view showing that the two air inlets of the second embodiment are both located in an outer tub.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 to FIG. 4, a first embodiment of a fan having a preheating ring flow path includes a base unit 1, a cover unit 2, a preheating inner tub 3, a fan unit 4, and a heating unit. Unit 5.

The base unit 1 surrounds an axis L and includes two air inlets 11, a chassis 12, an outer tub 13 defining a receiving space 131, a middle bucket 14, and two legs 15.

The chassis 12 has an outer groove 121 surrounding the axis L, an inner groove 122 surrounding the axis L and away from the outer groove 121, and a gap between the inner groove 122 and the outer groove 121. Medium groove 123.

The outer tub 13 has a top edge 132 and a bottom edge 133 opposite to the top edge 132. The bottom edge 133 can be received in the outer recess 121.

The middle bucket 14 has a latching portion 141 that can be snapped into the central recess 123, and an extension portion 142 extending from the latching portion 141 of the middle bucket 14 away from the chassis 12.

The legs 15 are disposed around the axis L and are equiangularly disposed on Below the chassis 12, the bottom edges of the legs 15 are lower than the bottom edge of the chassis 12, thereby providing a predetermined height difference, as shown in FIG.

It is worth mentioning that the number of the air inlets 11 of the base unit 1 may also be only one, so that the same purpose of air flowing into the accommodating space 131 from the air inlet 11 of the base unit 1 can be achieved. In addition, the number of the legs 15 is not limited to two. For example, the number of the legs 15 may also be three, and the columns 15 are also disposed at equal angles below the chassis 12 . In this way, the same purpose of generating the preset height difference can also be achieved.

The cover unit 2 surrounds the axis L and is disposed on the base unit 1.

The cover unit 2 includes a chamber 21 communicating with the accommodating space 131, an air outlet 22 communicating with the chamber 21, a middle seat 23 surrounding the axis L, and a middle portion 23 The top seat 24, an upper cover 25 covering the top edge 132 of the outer tub 13, and a handle 26 disposed on the upper cover 25. It is explained here that the top seat 24 and the middle seat 23 together define the air outlet 22 .

The middle seat 23 has an inner ring wall 231 adjacent to the axis L, an outer ring wall 232 away from the axis L, a connecting wall 233 connecting the inner ring wall 231 and the outer ring wall 232, and most of the A post 235 of a top edge 234 of the outer ring wall 232. It is noted that the outer ring wall 232 is disposed on the outer tub 13 , and the outer ring wall 232 further has a vertical surface 236 away from the axis L, and the vertical surface 236 can abut against the outer tub 13 .

In the first embodiment, the pillars 235 can respectively The air outlet 22 is partitioned into a plurality of air blowing ports 221, and the upper cover 25 has a plurality of ventilation windows 251 that communicate with the air blowing ports 221, respectively. It should be noted that the ventilating windows 251 are in the shape of a fence. When the air sent from the air vents 221 encounters the ventilating windows 251 in a fence shape, a local cyclone may occur due to the inability to circulate in some areas. Therefore, it is possible to contribute not only to mixing air but also to the flow of air in a single horizontal direction.

The preheating inner tub 3 surrounds the axis L. The preheating inner tub 3 includes a top portion 31 of the inner ring wall 231 disposed on the middle seat 23, and an extension extending from the top portion 31 away from the chamber 21 Part 32. It should be noted that the top portion 31 of the preheating inner tub 3 is closely abutting the inner ring wall 231 of the middle seat 23, thereby avoiding air in the top portion 31 of the preheating inner tub 3 and the middle thereof. The inner ring wall 231 of the seat 23 is circulated due to the presence of a gap.

The preheating inner tub 3 can divide the accommodating space area 131 into a heating chamber 134 adjacent to the axis L, and a preheating ring flow path 135 away from the axis L. The heating chamber 134 and the preheating ring flow path 135 are In connection, the preheating annular flow path 135 is defined by the preheating inner tub 3 and the connecting wall 233 and the outer tub 13 .

In the first embodiment, the middle bucket 14 is interposed between the preheating inner tub 3 and the outer tub 13. Further, the middle tub 14 divides the preheating annular flow passage 135 into a proximity heating The rear preheating section 136 of the inner tub 3 and a front preheating section 137 away from the preheating inner tub 3, the front preheating section 137, the rear preheating section 136, the heating chamber 134 and the chamber 21 are connected The air inlets 11 are respectively located in the chassis 12 and interposed between the preheating inner tub 3 and the outer Between the buckets 13, more specifically, the inlets 11 are located between the intermediate bucket 14 and the outer tub 13 and are in communication with the front preheating section 137.

The fan unit 4 is disposed in the chamber 21 of the cover unit 2 and above the middle seat 23.

The fan unit 4 includes a fan 41 interposed between the top seat 24 and the middle seat 23, a motor 42 capable of driving the fan 41, and a fan control circuit board 43 disposed on the top seat 24. The fan control circuit board 43 can adjust the rotation speed of the motor 42 to change the size of the wind provided by the fan 41.

The heating unit 5 includes two heating elements 51 disposed in the heating chamber 134, a reflecting plate 52 disposed in the heating chamber 134 and disposed in the chassis 12, and six in the heating chamber 134 and disposed in the preheating A cross bar 53 of the inner tub 3 and a heating control circuit board 54 disposed on the chassis 12. In the first embodiment, the heating elements 51 can respectively be metal coils with current flowing, and the heating principle is mainly to convert electric energy into heat energy according to Joule's Laws. In addition, the reflecting plate 52 is added. The material can be a metal material having a high heat reflectivity, or the surface of the reflector 52 can be coated with a composite material having a high heat reflectivity, thereby helping the heat energy generated by the heating elements 51 to be concentrated and relatively fast. The ground is accumulated in the heating chamber 134.

In addition, the reflector 52 has an upwardly convex protrusion 521. Preferably, the aperture of the protrusion 521 is greatly reduced in a direction away from the chassis 12. This design can guide the air to flow upward, avoiding Air that has not yet absorbed sufficient thermal energy is retained in the heating chamber 134 due to its high density, especially It is retained in an area adjacent to the chassis 12.

In the first embodiment, the crossbars 53 are respectively in contact with the heating elements 51 and the preheating inner tub 3, so that the crossbars 53 can both help to transfer thermal energy to the preheating inner tub 3, and The heating elements 51 can also radiate heat energy to the preheating inner tub 3 respectively, and the preheating inner tub 3 for obtaining thermal energy further transfers thermal energy to the air in the preheating annular flow passage 135, so that the heating element 51 The air of the preheating circulation channel 135 can be preheated and warmed up, so that cold air can be completely prevented from directly contacting the heating elements 51, so that the thermal energy generated by the heating elements 51 cannot be effectively accumulated. The heating element 51 can be quickly required to be a stable high-temperature heat source, that is, the present invention can reduce the heating time required for the heating element 51 and reduce the power consumption, so that compared with the existing In the case of an electric heater having a preheating ring flow path, the present invention can improve the efficiency of the warm air.

It is worth mentioning that the number of the heating elements 51 of the heating unit 5 may also be only one, and the number of the cross bars 53 of the heating unit 5 may also be only one, so that the preheating ring flow path can also be achieved. The air of 135 can be preheated and warmed up.

In the first embodiment, the base unit 1 further includes an insulating case 16 that can cover the heating control circuit board 54. The heating control circuit board 54 can adjust the temperature of the heating elements 51. .

Referring to FIG. 4, the heating elements 51 in operation convert the electrical energy into thermal energy according to Joule's Laws, and the heating chamber 134 located at more thermal energy becomes a high temperature region and the thermal energy is sequentially directed to the preheating. The bucket 3 and the preheating ring runner 135 are transferred. Further, when the user activates the fan unit 4, the air is accelerated from the inlet ports 11 of the base unit 1 to the preheating ring runner 135. The air in the preheating ring flow path 135 is preheated and warmed, and then sequentially flows out through the heating chamber 134 and the chamber 21, and then flows out from the air outlet port 22. Here, it is added that the air is added. The path of the flow can be as indicated by the dashed arrow in FIG.

Since the present invention has the design of the preheating ring flow path 135, cold air can be prevented from directly entering the heating chamber 134, thereby ensuring that the discharged air is not cold air having a relatively low temperature, so that substantially constant temperature can be provided. The warm air allows the user to clearly feel the rise in ambient temperature.

Referring to FIG. 5 and FIG. 6, a second embodiment of a fan having a preheating ring flow path is similar to the first embodiment, and the second embodiment is similar to the first embodiment. The main difference is that the present invention has a fan having a preheating ring flow path. The chassis 17 of the base unit 1 has an outer groove 171 surrounding the axis L, and a concave surrounding the axis L and away from the outer groove 171. Slot 172. The bottom edge 133 of the outer tub 13 is disposed in the outer groove 171, wherein the air inlets 11 are respectively located in the outer tub 13 and interposed between the middle seat 23 and the chassis 17.

When the user activates the heating unit 5 together with the fan unit 4, the air will accelerate from the air inlets 11 located in the outer tub 13 to the preheating ring flow path 135. At this time, the preheating circulation flow is located. The air of the channel 135 is preheated and warmed, and then sequentially flows out through the heating chamber 134 and the chamber 21, and then sequentially flows out from the air supply opening 221 and the ventilation window 251. The path through which the air flows can be as shown in Figure 6. The dotted arrows are shown.

As such, the second embodiment can achieve the same objects and effects as the first embodiment described above.

In summary, the novel fan having a preheating ring flow path can flow heat to the preheating ring flow path instead of directly contacting the heating element, so that the heating element can effectively accumulate heat energy, and more preferably Further, the thermal energy can be further transmitted to the preheating inner tub by radiation or through the crossbars, and the preheating inner tub which obtains thermal energy continues to heat the air in the preheating annular flow channel, thereby In the existing electric heater, not only can the benefit of the warm air be improved, but also the air flowing out is substantially a constant temperature warm air instead of the cold air which has not yet absorbed enough heat energy, so the purpose of the present invention can be achieved.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

1‧‧‧Base unit

11‧‧‧air inlet

12‧‧‧Chassis

121‧‧‧outer groove

122‧‧‧ Inside groove

123‧‧‧ Medium groove

13‧‧‧ outer barrel

131‧‧‧ accommodating space

132‧‧‧Top edge

133‧‧‧ bottom edge

134‧‧‧heating room

135‧‧‧Preheating circulation channel

136‧‧‧post preheating section

137‧‧‧Preheating section

141‧‧‧Insert Card Department

2‧‧‧ Seat unit

21‧‧ ‧ room

22‧‧‧air outlet

221‧‧‧Air outlet

23‧‧‧中座

231‧‧‧ Inner Ring Wall

232‧‧‧ outer ring wall

233‧‧‧Connecting wall

234‧‧‧Top edge

236‧‧‧ vertical

251‧‧‧ breathable window

3‧‧‧Preheating the inner barrel

31‧‧‧ top

32‧‧‧Extension

4‧‧‧Fan unit

41‧‧‧fan

42‧‧‧Motor

43‧‧‧Fan control circuit board

51‧‧‧ heating elements

521‧‧‧ convex

53‧‧‧cross bar

54‧‧‧heat control circuit board

L‧‧‧ axis

Claims (10)

A fan having a preheating ring flow path, comprising: a base unit surrounding an axis and including at least one air inlet, and an outer tub defining an accommodating space; a cover unit surrounding the axis and disposed on the axis The base unit includes a chamber communicating with the accommodating space, an air outlet communicating with the chamber, and a middle seat surrounding the axis, the middle seat having a central axis adjacent to the axis An inner ring wall, an outer ring wall away from the axis, and a connecting wall connecting the inner ring wall and the outer ring wall, the outer ring wall being disposed in the outer tub; a preheating inner tub surrounding the axis and including a top portion of the inner ring wall disposed at the middle seat, and an extension extending from the top portion away from the chamber, the preheating inner tub dividing the accommodating space into a heating chamber adjacent to the axis and away from a preheating ring flow path of the axis, the heating chamber is in communication with the preheating ring flow path, the preheating inner flow path is defined by the preheating inner barrel, the connecting wall and the outer barrel; a fan unit is disposed at the a housing of the housing unit; and a heating unit, including to a heating element disposed in the heating chamber, wherein when the fan unit is activated, air flows from the air inlet of the base unit to the preheating ring flow path, and then sequentially passes through the heating chamber and the chamber And then flow out from the outlet. The fan having a preheating ring flow path according to claim 1, wherein the base unit further comprises a chassis having an outer groove surrounding the axis, a bottom edge of the outer barrel being latched in the outer concave In the slot, the air inlet Located in the outer tub and between the middle seat and the chassis. The fan having a preheating ring flow path according to claim 1, wherein the base unit further comprises a chassis having an outer groove surrounding the axis, a bottom edge of the outer barrel being latched in the outer concave In the slot, the air inlet is located at the chassis and between the preheating inner tub and the outer tub. The fan having a preheating ring flow path according to claim 3, wherein the chassis further has an inner groove surrounding the axis and away from the outer groove, and a space between the inner groove and the outer groove The middle unit further includes a middle barrel between the preheating inner tub and the outer tub, the middle tub having an engaging portion that is disposed in the middle recess, and a middle barrel The inserting portion faces the extension extending away from the chassis, and the middle tub divides the preheating ring flow path into a rear preheating section adjacent to the preheating inner tub and a front preheating section away from the preheating inner tub. The front preheating section, the rear preheating section, and the heating chamber are all in communication with the chamber, and the air inlet is located between the middle barrel and the outer tub. The fan having a preheating ring flow path according to claim 1, wherein the heating unit further comprises a reflecting plate disposed in the heating chamber and disposed on the chassis, and at least one of the heating chambers is disposed in the heating chamber and disposed in the preheating The crossbar of the inner barrel. A fan having a preheating ring flow path according to claim 5, wherein the reflecting plate has an upwardly convex convex portion. The fan having a preheating ring flow path according to any one of claims 1 to 6, wherein the cover unit further includes a top seat located above the middle seat, the top seat and the middle seat jointly defining the Outlet, the middle seat is still a plurality of pillars disposed on a top edge of the outer ring wall, the pillars respectively dividing the air outlet into a plurality of air outlets, the fan unit including a fan interposed between the top seat and the middle seat, and a fan The motor that drives the fan. The fan having a preheating ring flow path according to claim 7, wherein the cover unit further comprises an upper cover that is disposed on a top edge of the outer tub, and a handle disposed on the upper cover, the upper cover having a majority A venting window that communicates with the air vents, respectively. The fan having a preheating ring flow path according to claim 8, wherein the fan unit further comprises a fan control circuit board disposed on the top seat, the heating unit further comprising a heating control circuit board disposed on the chassis. The base unit further includes an insulating case covering the heating control circuit board. The fan having a preheating ring flow path according to claim 9, wherein the base unit further includes at least two legs, the legs are disposed at an equal angle below the chassis, and the bottom edges of the legs are lower than The bottom edge of the chassis.