CN108548258A - cooling fan - Google Patents

Abstract

The invention discloses a cooling fan, wherein, the cooling fan includes a casing with an air inlet and a wet curtain assembly detachably mounted on the air inlet; the wet curtain assembly includes an upper wet curtain and a lower wet curtain, so The upper wet curtain and the lower wet curtain are self-inflicted and installed on the air inlet, and the cooling fan also includes a water supply device for supplying water to the upper wet curtain and is installed on the housing and located at the The water receiving tray between the upper cooling curtain and the lower cooling curtain, the bottom of the water receiving tray is provided with a plurality of water diversion holes arranged along the width direction of the lower cooling curtain. The technical scheme of the invention can solve the problem of uneven water supply at the lower end of the cooling fan wet curtain.

Description

cooling fan

technical field

The invention relates to the technical field of household appliances, in particular to a cooling fan.

Background technique

In the field of home appliances, user experience and simple design are the future development trend, which can make consumers more convenient to use and improve consumers' comfort in using products. For example, there are APP-controlled fans on the market at present, fans with smart wind and sleep wind modes, and many product designs are developing in the direction of humanized operation and product reliability. The existing air intake cooling system of the cooling fan uses a single cooling pad for filtration and cooling. The length of a single cooling pad is relatively large, which makes processing and transportation inconvenient, and the effect of water diversion is poor during use. Especially at the lower end of the cooling pad, the water supply is uneven and difficult. Soggy, resulting in poor evaporative cooling.

Contents of the invention

The main purpose of the present invention is to provide a cooling fan aimed at solving the problem of poor evaporative cooling effect caused by uneven water supply to the lower end of the wet curtain of the existing cooling fan.

In order to achieve the above object, the cooling fan proposed by the present invention includes a housing with an air inlet and a wet curtain assembly detachably mounted on the air inlet; the wet curtain assembly includes an upper wet curtain and a lower wet curtain, and the upper wet curtain The curtain and the lower wet curtain are self-injured and installed on the air inlet. The cooling fan also includes a water supply device for supplying water to the upper wet curtain and a water supply device installed on the housing and located on the upper wet curtain. The water receiving tray between the curtain and the lower cooling curtain, the bottom of the water receiving tray is provided with a plurality of water diversion holes arranged along the width direction of the lower cooling curtain.

Preferably, the housing is provided with a first clamping portion located at the upper end of the air inlet and extending downward, and the water receiving tray is provided with a second clamping portion extending upward, and the first clamping portion and The second clamping part respectively clamps the upper end and the lower end of the upper wet curtain.

Preferably, the water receiving tray is further provided with a third clamping portion extending downward, and the housing is further provided with a fourth clamping portion located at the lower end of the air inlet and extending upward, and the third clamping portion The upper end and the lower end of the lower wet curtain are respectively held by the fourth holding portion and the fourth holding portion.

Preferably, buckles are provided at the left and right ends of the water tray, and holes corresponding to the buckles are provided on the housing, and the water tray passes through the buckles and the holes. The adapter is fastened to the housing.

Preferably, the casing is provided with a plurality of limiting protrusions located on the left and right sides of the air inlet, so as to limit the upper cooling curtain and the lower cooling curtain in the left and right directions.

Preferably, the water supply device includes a distribution channel arranged at the upper end of the upper wet curtain, and a plurality of water distribution holes are arranged at intervals along the width direction of the upper wet curtain.

Preferably, an overflow hole is provided in the distribution tank, the side wall of the overflow hole extends upwards, the water inlet of the overflow hole is higher than the water inlet of the water distribution hole of the distribution tank, and the water outlet of the overflow hole is located at the above the top of the wet curtain, and the aperture of the overflow hole is larger than the aperture of the water distribution hole of the distribution tank

Preferably, the water distribution holes of the water receiving tray include main water distribution holes and auxiliary water distribution holes, the main water distribution holes are evenly spaced in the width direction of the lower wet curtain, and the main water distribution holes The pore diameter is larger than the pore diameter of the auxiliary water-separating holes.

Preferably, the main water diversion holes and the auxiliary water diversion holes are arranged alternately in sequence.

Preferably, a deflector is further provided at the lower end of the upper wet curtain, and the lower side of the deflector extends obliquely downward to the water receiving tray.

The technical scheme of the present invention divides the wet curtain into an upper wet curtain and a lower wet curtain, and sets a water receiving tray between the upper wet curtain and the lower wet curtain. The water receiving tray accepts and reforms the water flow flowing down the upper wet curtain and The reformed water flow is supplied to the lower cooling pad, which can keep the upper cooling pad and the lower cooling pad in a soaking state, avoid the problem of uneven water supply at the lower end of the cooling pad, ensure the effective evaporation area and ensure the evaporation and cooling effect of the cooling fan.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is the overall structure schematic diagram of an embodiment of the cooling fan of the present invention;

Fig. 2 is a partial structural schematic diagram of an embodiment of the cooling fan of the present invention;

Fig. 3 is a partial enlarged view of area A in Fig. 2;

Fig. 4 is a partial enlarged view of area B in Fig. 2;

Fig. 5 is a partial cross-sectional structural schematic diagram of another embodiment of the cooling fan of the present invention;

Fig. 6 is a partial enlarged view of area C in Fig. 5;

Fig. 7 is a partial enlarged view of area D in Fig. 5;

Fig. 8 is a partial enlarged view of area E in Fig. 5;

Fig. 9 is a partial structural disassembly diagram of an embodiment of the cooling fan of the present invention;

Fig. 10 is a schematic diagram of the rectifying plate structure in another embodiment of the cooling fan of the present invention.

Explanation of reference numbers:

label name label name 100 case 201 Lower wet curtain 101 The first holding part 202 Divider 102 Second holding part 203 water tray 103 The third holding part 204 water hole 104 The fourth holding part 205 main water hole 105 Buckle 206 Auxiliary water separation hole 106 card hole 207 overflow hole 107 Limit bump 300 rectifier plate 200 Upper wet curtain 301 Vents

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

The invention provides a cooling fan.

In the embodiment of the present invention, please refer to FIGS. 1 to 4 , the cooling fan includes a housing 100 with an air inlet and a wet curtain assembly detachably mounted on the air inlet; the wet curtain assembly includes an upper wet curtain 200 and the lower wet curtain 201, the upper wet curtain 200 and the lower wet curtain 201 are self-injured and installed on the air inlet, and the cooling fan also includes a water supply device for supplying water to the upper wet curtain 200 And the water receiving tray 203 installed on the housing 100 and located between the upper wet curtain 200 and the lower wet curtain 201, the bottom of the water receiving tray 203 is provided with a plurality of rows along the width direction of the lower wet curtain 201 The water distribution hole 204 of cloth.

The cooling fan uses liquid water to evaporate and cool, and uses a wet curtain to increase the effective surface area for liquid water to evaporate. A water tank is installed at the lower end of the cooling fan, and the water supply device transports the water in the water tank to the upper end of the wet curtain. The water in the wet curtain flows from top to bottom, and the excess liquid water flows back into the water tank. Usually, the main body of the cooling fan is placed vertically, and the air inlet and air outlet are relatively small in width but long in length, and their length direction extends vertically. The wet curtain is usually set at the air inlet to cover or fill the air inlet, so that the air intake of the cooling fan must pass through the wet curtain. The wet curtain is a long rectangle. When the water flows from the top of the wet curtain to the bottom of the wet curtain, the water flow distribution is prone to be uneven at the lower end of the wet curtain, resulting in local water shortage at the lower end of the wet curtain, which reduces the effective evaporation area. Reduce the cooling effect of the cooling fan.

In this embodiment, an upper wet curtain 200 and a lower wet curtain 201 distributed up and down are arranged at the air inlet, and a water receiving tray 203 is provided between the upper wet curtain 200 and the lower wet curtain 201, and the water receiving tray 203 is used to receive the upper wet curtain 200, the water that flows down from the upper wet curtain 200 is accumulated in the water receiving tray 203 and is supplied to the lower wet curtain 201 by the water diversion hole 204 provided at the bottom of the water receiving tray 203 . When the cooling fan is working normally, the water supply flow of the water supply device to the upper wet curtain 200 is the sum of the evaporation of the upper wet curtain 200 and the maximum water flow of the water hole 204 at the bottom of the water receiving tray 203, and a certain water level is maintained in the water receiving tray 203, so that Each water diversion hole 204 at the bottom of the water receiving tray 203 can evenly supply water to the lower wet curtain 201 . When the water level in the water receiving tray 203 was high, the water supply device reduced the water supply of the upward wet curtain 200, and when the water level in the water receiving tray 203 was low, the water supply device increased the water supply of the upward wet curtain 200; The water level in the pan 203 dynamically adjusts the water supply, so that the water level in the water receiving pan 203 remains relatively constant.

The water supply device includes a distribution channel 202 arranged at the upper end of the upper wet curtain 200 and having a plurality of water distribution holes 204 at intervals along the width direction of the upper wet curtain 200 . The bottom of the distribution tank 202 defines water distribution holes 204 located above the top of the upper wet curtain 200 and spaced apart along the width direction of the upper wet curtain 200 . The bottom of the diversion tank 202 is also provided with an overflow hole 207, the side wall of the overflow hole 207 extends upwards, the water inlet of the overflow hole 207 is higher than the water inlet of the water diversion hole 204, and the aperture of the overflow hole 207 is larger than the aperture of the water diversion hole 204 . Under normal circumstances, the water level in the distribution tank 202 is lower than the height of the water inlet of the overflow hole 207, and the water supply at the top of the upper wet curtain 200 is undertaken by the water distribution hole 204 of the distribution tank 202, and the overflow hole 207 does not supply water; when the water supply demand is large , the water supply flow rate of the water supply device is greater than the maximum water diversion flow rate of the water diversion hole 204 of the diversion tank 202, and the water level in the diversion tank 202 rises. When the water level in the diversion tank 202 is higher than the water inlet height of the overflow hole 207, the water flows through the overflow hole 207. The top of the upper wet curtain 200, at this time, the water diversion tank 202 supplies water to the upper wet curtain 200 through the overflow hole 207 and the water diversion hole 204, and the water flow of the upper wet curtain 200 increases. The evaporation of water in the wet curtain is related to the ambient temperature and relative humidity. Under the usual environment, the range of the evaporation of the upper wet curtain 200 is measured, wherein the maximum water diversion flow rate of the water hole 204 at the bottom of the flow distribution tank 202 is the upper wet curtain. The sum of the minimum evaporation capacity of 200 and the maximum diversion flow rate of the water diversion hole 204 of the water receiving tray 203; the sum of the maximum diversion flow rate of the water diversion hole 204 at the bottom of the diversion tank 202 and the maximum diversion flow rate of the overflow hole 207 is greater than the upper wet curtain 200 The sum of the maximum evaporation capacity and the maximum water distribution flow rate of the water distribution hole 204 of the water receiving tray 203 . At the same time, the maximum water diversion flow rate of the water diversion hole 204 of the water receiving tray 203 is greater than the maximum evaporation capacity of the lower wet curtain 201 .

The present embodiment is not limited thereto. In other embodiments, the diversion tank 202 can also be replaced by an equivalent water distribution pipe installed horizontally on the top of the upper wet curtain 200, and the bottom of the water distribution pipe is opened towards the top of the upper wet curtain 200 hole 204 .

The water distribution hole 204 of the water receiving tray 203 includes a main water distribution hole 205 and a secondary water distribution hole 206, wherein the main water distribution hole 205 and the secondary water distribution hole 206 are respectively arranged in the width direction of the lower wet curtain 201 They are evenly spaced, and the diameter of the main water diversion holes 205 is larger than that of the auxiliary water diversion holes 206; the main water diversion holes 205 and the auxiliary water diversion holes 206 are arranged alternately in sequence. The diversion capacity of the main water diversion hole 205 is greater than the diversion capacity of the auxiliary water diversion hole 206, and the adjacent two main water diversion holes 205 are far apart. The diversions are independent of each other and will not merge, which can better maintain the uniform distribution of the water flow in the lower cooling pad 201; and the secondary water diversion holes 206 with smaller apertures are set between two adjacent main water diversion holes 205, which can make up for the main water diversion. The problem that the water flow at the upper end of the lower wet curtain 201 is difficult to fully cover due to the relatively long distance between the holes 205 allows the entire lower wet curtain 201 to be fully immersed in the water flow.

There is a certain amount of water in the water receiving tray 203, and certain water sounds will be generated when the water in the upper wet curtain 200 flows to the water receiving tray 203. In order to reduce the water sound, the present invention sets a deflector at the lower end of the upper wet curtain 200, The lower side of the deflector extends downwards to the water tray 203, and the water in the upper wet curtain 200 flows into the water tray 203 smoothly through the drainage of the deflector, avoiding the water in the upper wet curtain 200 from dripping directly. The greater noise generated by the access to the water tray 203 makes the cooling fan have a better mute effect when it is working.

The technical solution of the present invention divides the wet curtain into the upper wet curtain 200 and the lower wet curtain 201, shortens the length of the wet curtain, and avoids the problem of uneven water distribution at the lower end of the wet curtain caused by the excessively long downward flow path of the water flow in the wet curtain , to ensure the infiltration of the entire wet curtain. A water receiving tray 203 is provided between the upper wet curtain 200 and the lower wet curtain 201 to receive the water flowing down from the upper wet curtain 200 , store and reform the water flow, and supply water evenly to the lower wet curtain 201 .

In addition, referring to Fig. 10, in order to improve the uniformity of the water flow in the wet curtain, a rectifying plate 300 can also be arranged inside the upper wet curtain 200 and/or the lower wet curtain 201. The rectifying plate 300 is a rectangular plate, and its length direction is along the The length direction of the water receiving tray 203 extends, and the width direction extends along the height direction of the air outlet. The rectifying plate 300 is provided with a ventilation hole 301, and the air intake airflow can pass through the wet curtain through the ventilation hole 301. At the same time, when the air intake airflow blows through the rectifying plate 300, the surface of the rectifying plate 300 will produce disturbed airflow, and the inside of the wet curtain The water on the surface of the rectifying plate 300 needs to flow into the surface of the rectifying plate 300, so the water flow on the surface of the rectifying plate 300 will be blown away by the air flow, and continuously and irregularly disturb the water flow on the surface of the rectifying plate 300, so that part of the water flowing through the rectifying plate 300 will be downward. More even distribution overall when flowing.

In order to facilitate the assembly of the upper wet curtain 200, the water receiving tray 203 and the lower wet curtain 201, please refer to Fig. 5 to Fig. 9, another embodiment proposed by the present invention. The water trays 203 are all clipped on the casing 100 . Specifically, buckles 105 are provided at the left and right ends of the water tray 203, and the housing 100 is provided with snap holes 105 corresponding to the buckles 105. The fastening of the hole 105 is installed on the housing 100; the housing 100 is provided with a first clamping part 101 located at the upper end of the air inlet and extending downward, and the water tray 203 is provided with a second clamping part extending upward 102, the first clamping part 101 and the second clamping part 102 respectively clamp the upper end and the lower end of the upper wet curtain 200; the water receiving tray 203 is also provided with a third clamp extending downward part 103, the housing 100 is also provided with a fourth clamping part 104 located at the lower end of the air inlet and extending upwards, the third clamping part 103 and the fourth clamping part 104 respectively clamp the The upper end and the lower end of the lower wet curtain 201. The casing 100 is provided with a plurality of limiting protrusions 107 located on the left and right sides of the air inlet, so as to limit the upper wet curtain 200 and the lower wet curtain 201 in the left and right directions.

The first clamping part 101, the second clamping part 102, the third clamping part 103 and the third clamping part 103 cooperate to clamp the upper wet curtain 200 and the lower wet curtain 201 on the housing 100 And limit in the up and down and front and rear directions, and limit projections 107 are set on the left and right sides of the air inlet, and the upper wet curtain 200 and the lower wet curtain 201 are limited in the left and right directions, and can simultaneously Prevent the upper wet curtain 200 and the lower wet curtain 201 from contacting the left and right sides of the casing 100 , and prevent water from flowing to the outside through the left and right sides of the casing 100 .

In the technical solution of the present invention, the upper wet curtain 200 and the lower wet curtain 201 are clamped on the housing 100 by means of clamping, which is convenient for assembly and disassembly. The length of the upper wet curtain 200 and the lower wet curtain 201 is smaller than that of the existing single wet curtain, which is also convenient for production and transportation.

The above is only a preferred embodiment of the present invention, and does not therefore limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A cooling fan, characterized in that, comprising: The housing has an air inlet; The wet curtain assembly is detachably installed on the housing; the wet curtain assembly includes an upper wet curtain and a lower wet curtain installed on the air inlet from top to bottom; The water receiving tray is installed on the housing and is located between the upper cooling curtain and the lower cooling cooling curtain. The bottom of the water receiving tray is provided with a plurality of water diversion holes arranged along the width direction of the lower cooling cooling curtain ; The water supply device is used to supply water to the upper wet curtain. 2. The cooling fan according to claim 1, characterized in that, the housing is provided with a first clamping portion located at the upper end of the air inlet and extending downward, and the water tray is provided with a first clamping portion extending upward. Two clamping parts, the first clamping part and the second clamping part respectively clamp the upper end and the lower end of the upper wet curtain. 3. The cooling fan according to claim 1, characterized in that, the water receiving tray is further provided with a third clamping portion extending downward, and the housing is also provided with a third clamping portion located at the lower end of the air inlet and extending upward. The fourth clamping part, the third clamping part and the fourth clamping part respectively clamp the upper end and the lower end of the lower wet curtain. 4. The cooling fan according to claim 1, characterized in that buckles are provided at the left and right ends of the water tray, and holes corresponding to the buckles are provided on the housing, and the connectors The water tray is fastened to the housing through the fitting of the buckle and the fastening hole. 5. The cooling fan according to claim 1, characterized in that, the casing is provided with a plurality of limiting protrusions located on the left and right sides of the air inlet, so as to connect the upper wet curtain to the lower one. The wet curtain is limited in the left and right directions. 6 . The cooling fan according to claim 1 , wherein the water supply device comprises a distribution channel arranged at the upper end of the upper wet curtain and having a plurality of water diversion holes spaced along the width direction of the upper wet curtain. 6 . 7. The cooling fan as claimed in claim 6, wherein an overflow hole is provided in the flow diversion groove, the side wall of the overflow hole extends upwards, and the water inlet of the overflow hole is higher than the water distribution hole of the flow distribution groove The water inlet of the overflow hole is located above the top of the upper wet curtain, and the aperture of the overflow hole is larger than the aperture of the water distribution hole of the distribution channel. 8. The cooling fan according to claim 1, wherein the water distribution hole of the water receiving tray comprises a main water distribution hole and an auxiliary water distribution hole, and the main water distribution hole is in the width direction of the lower wet curtain. The upper surface is evenly spaced, and the aperture of the main water distribution holes is larger than the aperture of the auxiliary water distribution holes. 9. The cooling fan according to claim 8, wherein the main water diversion holes and the auxiliary water diversion holes are arranged alternately in sequence. 10 . The cooling fan according to claim 1 , wherein a deflector is further provided at the lower end of the upper cooling curtain, and the lower side of the deflector extends obliquely downward to the water receiving tray. 11 .