CN217785355U - Refrigeration fan - Google Patents

Abstract

The utility model provides a refrigeration fan, refrigeration fan includes: a housing including a first air duct; the evaporator is arranged in the first air duct; and the cold end wet curtain is connected with the shell and used for cooling the airflow flowing through the first air channel. The cold end wet curtain is arranged on the upwind side or the downwind side of the evaporator, so that the temperature of the finally discharged cold airflow for refrigeration can be reduced, the refrigeration performance of the refrigeration fan is improved, and the technical problem of poor refrigeration effect in the related art is solved. And then realize optimizing refrigeration fan structure, promote refrigeration fan performance, promote the technical effect that the user used and experienced.

Description

Refrigeration fan

Technical Field

The utility model relates to an ambient temperature adjusts technical field, particularly relates to a cooling fan.

Background

In the related art, a cooling fan providing cooling capacity through a refrigerant heat exchange system is popularized, the cooling fan in the related art generally is an evaporative cooling fan, commonly called an air conditioning fan, and generally comprises a shell and a water tank, an air outlet is formed in the front side of the shell, an air inlet is formed in the rear side of the shell, a fan, a motor and a wet curtain are sequentially installed in the shell from front to back, and the water tank is arranged at the lower end of the shell and is fixed with the shell. When the refrigeration cooling fan operates, water in the water tank is pumped to the upper part of the wet curtain through the water pump and the conveying pipeline, the wet curtain is wetted, one part of water is evaporated into gas, the other part of water flows back into the water tank again, the motor drives the fan to rotate, hot air is sucked into the shell from the air inlet and is transmitted to the wet curtain, heat is required to be absorbed due to the evaporation of the water on the wet curtain, the heat in the hot air is absorbed and then changed into cold air, and the cold air is discharged from the air outlet, so that the effect of cooling and refrigeration is achieved; and the air is through wet curtain, and water can take away some with the dust in the air, and the evaporation of moisture can increase indoor humidity, nevertheless for satisfying demands such as portable, small-size, the refrigeration performance of refrigeration thermantidote is relatively poor to the refrigeration thermantidote can't satisfy user's refrigeration demand.

Therefore, how to design a cooling fan capable of overcoming the above technical defects becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art at least.

Therefore, the utility model provides a cooling fan.

In view of this, the utility model provides a refrigeration fan, refrigeration fan includes: a housing including a first air duct; the evaporator is arranged in the first air duct; and the cold end wet curtain is connected with the shell and used for cooling the air flow flowing through the first air duct.

The application limits a refrigeration fan, and the refrigeration fan can generate the low temperature air current to discharge the low temperature air current to the user region, with the refrigeration demand that satisfies the user. Specifically, the cooling fan includes a case, an evaporator, and a condenser. The shell is a frame structure and an outer contour structure of the refrigeration fan, is used for supporting and positioning other structures on the refrigeration fan and is also used for shielding and protecting an internal working structure of the refrigeration equipment, a first air channel is formed inside the specific shell, and the evaporator is arranged inside the first air channel. During operation, the refrigerant evaporates in the evaporator to absorb heat, so that the air flow flowing through the first air channel is cooled, and then the air flow is discharged in a directional manner to form cold air flow for refrigeration.

To the technical problem who exists among the correlation technique, this application has set up the wet curtain of cold junction, and the wet curtain of cold junction links to each other with the casing for lower the temperature to the air current in the first wind channel of flowing through, reduce the temperature of the exhaust cold air current in first wind channel with the cooperation evaporimeter. Specifically, the cold-end wet curtain can be arranged outside the first air duct and is arranged opposite to the inlet and the outlet of the first air duct, so that the temperature of air flowing into the first air duct is reduced, or the temperature of air discharged by the first air duct is reduced. The cold end wet curtain can also be arranged inside the first air duct and used for reducing the temperature of the airflow flowing from the first air duct inlet to the evaporator or reducing the temperature of the airflow flowing to the first air duct outlet. Therefore, the cold end wet curtain is arranged on the upstream side or the downstream side of the evaporator, the temperature of the finally discharged cold airflow for refrigeration can be reduced, the refrigeration performance of the refrigeration fan is improved, and the technical problem of poor refrigeration effect in the related art is solved. And then realize optimizing refrigeration fan structure, promote refrigeration fan performance, promote the technological effect that the user used the experience.

Additionally, according to the utility model provides a cooling fan among the above-mentioned technical scheme can also have following additional technical characterstic:

in the above technical solution, the housing further includes a first air inlet and a first air outlet communicating with the first air duct; and the cold-end wet curtain is positioned between the first air inlet and the first air outlet.

In the technical scheme, the position of the cold end wet curtain is defined. Specifically, the housing is further provided with a first air inlet communicated with the first air duct and a first air outlet communicated with the first air duct, and the airflow flows into the first air duct from the first air inlet and is finally discharged out of the first air duct from the first air outlet. On this basis, the wet curtain setting of cold junction is inside first wind channel, and the air current is the first air current flow direction in the first runner by the direction of first air intake flow direction first air outlet, and the wet curtain of cold junction is between first air intake and first air outlet on this first flow to ensure that the air current in the first wind channel of flowing through can cool down under the effect of the wet curtain of cold junction. And, set up the wet curtain of cold junction in first wind channel, can avoid the wet curtain of cold junction to receive the interference of casing external environment to promote the cooling effect of the wet curtain of cold junction.

In any one of the above technical solutions, the cooling fan further includes: the positioning part is arranged on the shell and positioned between the first air inlet and the evaporator; the cold end wet curtain includes: the first wet curtain is connected with the positioning part and covers the first air inlet.

In this solution, a first alternative installation of the cold end wet curtain is defined, the cold end wet curtain comprising the first wet curtain according to the installation position. Specifically, the shell is provided with a positioning portion, and the positioning portion is located in the first air duct and connected with the first air inlet. First wet curtain is installed on location portion to fix first wet curtain at the inboard of first air intake, after the installation of accomplishing first wet curtain, first wet curtain can cover first air intake at the endotheca of first air intake, carries out the cooling in order to guarantee by the gaseous homoenergetic of first air intake inflow and handles in first wet curtain. This structure can refrigerate the air current that flows into first wind channel at the very first time to obtain the low temperature air current that is less than outdoor temperature fast, this low temperature air current further cools down after carrying out the heat transfer with the evaporimeter, thereby makes the temperature of the refrigeration air current of the final output of refrigeration fan reduce. Thereby realizing the technical effect of improving the refrigeration performance of the refrigeration fan. In addition, the first wet curtain arranged at the first air inlet can also avoid the interference of external high-temperature gas on the normal work of the isothermal end structure of the evaporator, so that the reliability of the refrigerating fan is improved.

In any one of the above technical solutions, the cooling fan further includes: the first through flow fan is arranged in the first air channel, the evaporator is wound on the periphery of the first through flow fan, and the first air outlet is positioned on one side of the first through flow fan, which is far away from the evaporator.

In the technical scheme, a first through flow fan is further arranged on the refrigerating fan, the first through flow fan is arranged in the shell, and the first through flow fan is located between the evaporator and the first air outlet. The first through flow fan is formed by enclosing a plurality of axially arranged blades to form a cylindrical wind wheel structure. The first air outlet is arranged corresponding to the first through-flow fan, the shape of the first air outlet corresponds to the shape of the outer contour of the first through-flow fan, and the size of the first air outlet is equal to or slightly larger than that of the first through-flow fan.

During the working process, the first through flow fan rotates, and the low-temperature gas near the evaporator flows into the rotating first through flow fan firstly and then is discharged out of the first air channel through the first air outlet. Compared with the technical scheme that low-temperature gas near the evaporator is directly exhausted from the first air outlet, the first through-flow fan is arranged to construct a through-flow air channel between the evaporator and the first air outlet, so that the coverage range of low-temperature air flow flowing out through the first air outlet is expanded through the through-flow air channel. Therefore, the cooling amplitude of the output airflow is reduced on the basis of not reducing the total output cold quantity (the cooling amplitude can be reduced to about 6 ℃), and the technical problems that the exhaust airflow is too large in cooling amplitude, a user is prone to discomfort and the user experience is poor due to direct blowing are solved under the condition that the refrigeration performance is not lost. And then realize optimizing the refrigeration fan structure, promote the user and feel the comfort level, promote the technological effect that the user used experience.

In any one of the above technical solutions, the cold-end wet curtain further includes: the second wet curtain is arranged on one side, facing the first through-flow fan, of the evaporator, and/or the third wet curtain is arranged on one side, facing away from the first through-flow fan, of the evaporator.

In this technical scheme, the cold junction wet curtain still includes the wet curtain of second, and the wet curtain of second corresponds the evaporimeter setting, is located the evaporimeter and towards one side of first through-flow fan. Specifically, the second wet curtain may be attached to a surface of the evaporator facing the first through-flow fan, and may further be spaced from the surface of the evaporator facing the first through-flow fan, which is not rigidly limited in this technical solution. Through setting up the wet curtain of second, can make the air current accomplish the heat transfer cooling back with the evaporimeter, flow in wet curtain and then the secondary cooling to further reduce the temperature value of this part air current, improve the cold volume that final output air current carried. Thereby realizing the technical effect of improving the refrigeration performance of the refrigeration fan.

The cold end wet curtain further comprises a third wet curtain, the third wet curtain is arranged corresponding to the evaporator and located on one side, back to the first through flow fan, of the evaporator. Specifically, the third wet curtain may be attached to a surface of the evaporator facing away from the first through-flow fan, and may further be spaced apart from the surface of the evaporator facing away from the first through-flow fan, which is not rigidly limited in this technical solution. Through setting up the wet curtain of third, can make the air current after the cooling of wet curtain, flow in the evaporimeter and carry out the secondary cooling. Thereby further reducing the temperature value of the part of the airflow and improving the cold carried by the final output airflow. Thereby realizing the technical effect of improving the refrigeration performance of the refrigeration fan.

Specifically, in the cooling fan, one of a first wet curtain, a second wet curtain and a third wet curtain may be selectively disposed to cool the air flowing through the first air duct by the single wet curtain. Can also set up the combination of above-mentioned three kinds of wet curtains or arbitrary two kinds of wet curtains simultaneously and cool down the air current to reinforcing cooling effect.

In any one of the above technical solutions, the casing further includes a second air duct, and the cooling fan further includes: the condenser is arranged in the second air channel and connected with the evaporator.

In the technical scheme, a second air channel is formed in the shell, a condenser is further arranged in the second air channel, the second air channel and the condenser correspond to the hot end of the refrigeration fan, and the first air channel and the evaporator correspond to the cold end of the refrigeration fan. Specifically, the inlet and outlet of the evaporator and the condenser are connected end to form a refrigerant circulation loop. During operation, the refrigerant evaporates in the evaporator to absorb heat, so as to cool the air flow in the first air channel, and then the air flow is discharged in a directional manner to form cold air flow for refrigeration. Correspondingly, the refrigerant is condensed in the condenser to release heat, so that the temperature of the air flow in the second flow channel is raised, and then the part of air is discharged directionally, so that the heat dissipation of the condenser can be realized, and the refrigeration performance is not influenced.

The shell is also provided with a first air inlet communicated with the second air channel and a second air outlet communicated with the second air channel, and the air flow flows into the second air channel from the second air inlet and is discharged out of the second air channel from the second air outlet after the heat dissipation of the condenser is completed.

In any one of the above technical solutions, the cooling fan further includes: and the hot end wet curtain is connected with the shell and used for cooling the air flow flowing through the second air channel.

In the technical scheme, the refrigerating fan further comprises a hot end wet curtain, and the hot end wet curtain is connected with the shell and used for cooling air flow flowing through the second air channel so as to be matched with the condenser to work. Specifically, the hot-end wet curtain can be arranged outside the second air duct and opposite to the inlet and outlet of the second air duct, so that the temperature of air flowing into the second air duct is reduced, or the temperature of air discharged by the second air duct is reduced. The hot end wet curtain can also be arranged inside the second air duct and used for reducing the temperature of the air flow flowing from the inlet of the second air duct to the condenser or reducing the temperature of the air flow flowing to the outlet of the second air duct.

Specifically, according to the setting position of the hot end wet curtain, the hot end wet curtain comprises a fifth wet curtain and/or a sixth wet curtain, the fifth wet curtain is arranged on the upstream side of the condenser, the air flow flowing in from the second air inlet flows into the fifth wet curtain firstly, and flows to the condenser after being cooled in the fifth wet curtain, so that the lower heat dissipation air flow is provided for the condenser, the heat dissipation effect of the condenser is improved, and the technical effect of improving the refrigeration performance of the refrigeration fan is further realized.

The sixth wet curtain is arranged on the leeward side of the condenser, airflow discharged to the second air outlet by the condenser flows into the sixth wet curtain firstly, and is discharged to the outside through the second air outlet after being cooled in the sixth wet curtain. The temperature of the finally output heat dissipation airflow can be reduced by arranging the sixth wet curtain, so that the influence of the heat dissipation airflow on the environment refrigeration effect is reduced, and the refrigeration performance of the refrigeration fan is improved in a phase-changing manner. Simultaneously, set up the sixth wet curtain and can also avoid high temperature heat dissipation air current mistake to blow to the user's body surface to promote refrigeration fan's practicality and reliability, promote user and use experience.

In any one of the above technical solutions, the casing further includes a second air inlet and a second air outlet communicating with the second air duct, and the cooling fan further includes: and the second cross-flow fan is arranged in the second air duct and is positioned between the condenser and the second air outlet.

In the technical scheme, a second cross-flow fan is further arranged on the refrigerating fan, the second cross-flow fan is arranged in the shell, and the second cross-flow fan is located between the condenser and the second air outlet. The second crossflow blower is formed by enclosing a plurality of axially arranged blades to form a cylindrical wind wheel. The second air outlet is arranged corresponding to the second cross flow fan, the shape of the second air outlet corresponds to the shape of the outer contour of the second cross flow fan, and the size of the second air outlet is equal to or slightly larger than that of the first cross flow fan.

And in the working process, the second cross-flow fan rotates, and the high-temperature gas near the condenser flows into the rotating second cross-flow fan firstly and then is discharged out of the second air channel through the second air outlet. Compared with the technical scheme that high-temperature gas near the condenser is directly discharged through the second air outlet, the through-flow air duct can be formed between the condenser and the second air outlet by arranging the second through-flow fan, on one hand, the through-flow air duct can enlarge the coverage range of high-temperature air flow flowing out through the second air outlet, and therefore the temperature rise range of the discharged air flow relative to the ambient temperature is reduced by enlarging the air outlet area, and the body feeling comfort level of a user is improved under the heating function. On the other hand, the cross-flow air duct can improve the airflow speed and the airflow uniformity near the condenser, so that the heat dissipation effect of the condenser is improved, the refrigerant can quickly release heat in the condenser, and the technical effects of improving the refrigeration and heating efficiency of the refrigeration fan are further realized.

In any of the above technical solutions, the casing is cylindrical, and the axial direction of the first crossflow blower and the axial direction of the second crossflow blower are both consistent with the axial direction of the casing.

In the technical scheme, the shape of the refrigeration fan and the arrangement mode of the first cross flow fan and the second cross flow fan are limited. Specifically, the casing is columnar, and the axial direction of the columnar casing is consistent with the height direction of the refrigeration fan. The space occupied by the refrigeration fan in the horizontal direction can be reduced by arranging the shell into a columnar shape, so that the refrigeration fan can be arranged in a long and narrow space, and the arrangement difficulty of the refrigeration fan is reduced. On the other hand, set up the casing into the column and help improving the height of air outlet, be convenient for form the surrounding type air current in indoor environment to promote temperature regulation rate.

On the basis, the first through flow fan is vertically arranged, namely the axial direction of the first through flow fan is consistent with the axial direction of the shell. Compared with the conventional technical scheme of transversely arranging the cross flow fans, the first air outlet is arranged corresponding to the first cross flow fan, and the first cross flow fan is vertically arranged on the columnar shell, so that the total length of the first cross flow fan is promoted, the area of the first air outlet is enlarged, the coverage area of airflow discharged by the first air outlet is further enlarged, and the cooling amplitude of the discharged cold airflow is reduced.

The second crossflow blower is vertically arranged, namely the axial direction of the second crossflow blower is consistent with the axial direction of the shell. Compared with the technical scheme of transversely arranging the cross-flow fans, the cylindrical shell is vertically provided with the second cross-flow fans, so that the total length of the second cross-flow fans is increased, the area of the second air outlet is enlarged, the coverage area of airflow discharged by the second air outlet is further enlarged, and the temperature rise amplitude of discharged hot airflow is reduced. And then realize promoting the user and feel comfort level, promote the technical effect that the user used and experienced.

Meanwhile, the structure is favorable for increasing the effective heat exchange area of the condenser, so that the heat dissipation effect of the condenser is improved, and the refrigeration and heating effects of the refrigeration fan are enhanced.

In any one of the above technical solutions, the evaporator and the condenser are arranged in a staggered manner in the height direction of the cooling fan.

In the technical scheme, the evaporator and the condenser are arranged in a staggered mode in the height direction of the cooling fan, namely the evaporator and the condenser are arranged on different heights respectively to form a tower-type structure layout. The evaporator and the condenser are arranged in a staggered manner in the height direction, so that the distance between the cold end and the hot end of the refrigerating fan can be prolonged, the mutual interference of the evaporator and the condenser is avoided, and the refrigerating and heating performances of the refrigerating fan are ensured. Meanwhile, the refrigerating fan under the structure outputs low-temperature airflow and high-temperature airflow at different heights respectively, so that the possibility of mutual interference of the low-temperature airflow and the high-temperature airflow can be reduced, and the refrigerating and heating performances of the refrigerating fan are further improved.

In any of the above solutions, the evaporator is located above the condenser.

In the technical scheme, the structural layout of the refrigeration fan is further refined by taking the technical scheme into consideration. Specifically, the condenser is arranged below the evaporator and above the second air outlet corresponding to the first air outlet.

In any one of the above technical solutions, the first air outlet and the second air outlet are opposite to each other.

In this technical scheme, the first air outlet that sets up relatively with the evaporimeter is towards the casing front side, and the second air outlet that sets up relatively with the condenser is towards the casing rear side. The structure layout enables the refrigerating fan to have more independent refrigerating and heating functions, and a user can conveniently select the refrigerating and heating functions of drinking according to application scenes.

Specifically, the refrigeration fan further comprises a rotary seat, the rotary seat is arranged below the shell, and the shell is rotatably connected with the rotary seat. When refrigeration is needed through the refrigeration fan, the shell is rotated to enable the first air outlet to be aligned to the area where the user is located, the second air outlet faces away from the area where the user is located, and therefore the cold air output by the first air outlet is used for reducing the temperature sensed by the user. Correspondingly, when the air conditioner needs to be heated through the refrigerating fan, the shell is rotated to enable the second air outlet to be aligned to the area where the user is located, the first air outlet faces away from the area where the user is located, and therefore the temperature sensed by the user is improved through hot air output by the second air outlet.

In any of the above technical solutions, the first air inlet is opposite to the first air outlet; the two second air inlets are respectively arranged at the left side and the right side of the second air outlet.

In the technical scheme, the number and the positions of the air inlets are explained in accordance with the technical scheme. Specifically, the evaporator is arranged above the condenser, and the first air inlet arranged corresponding to the evaporator is arranged on one side of the condenser, which is far away from the first air outlet. Wherein, first air outlet is towards casing front side, and first air intake is towards casing rear side. The second air outlet faces the rear side of the shell, and the two second air inlets face the left side and the right side of the shell respectively. In the working process, external air flow is poured into the first air channel from the rear side of the shell, the second air channel is poured into the second air channel from the left side and the right side of the shell, the external air flow is discharged from the front end and the rear end of the shell after heat exchange is completed, and the layout mode of air inlet, air outlet and air outlet from the left side and the right side is favorable for improving the heat exchange efficiency of the evaporator and the condenser, so that the refrigerating and heating effects of the refrigerating fan are improved.

In any one of the above technical solutions, the cooling fan further includes: and a compressor connecting the evaporator and the condenser to form a circulation flow path.

In this technical scheme, refrigerant heat transfer subassembly still includes the compressor, and the compressor setting is connected with the condenser in the casing, one end, and the other end is connected with the evaporimeter to cooperation evaporimeter and condenser form closed refrigerant circulation circuit. During operation, the compressor compresses the refrigerant to output high temperature and high pressure refrigerant to the circulation loop. The compressor is arranged in the lower half area of the shell and located below the evaporator and the first through flow fan, and the center of gravity of the refrigeration fan can be lowered by arranging the compressor below the compressor, so that the stability of the refrigeration fan is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows one of the schematic structural diagrams of a refrigeration fan provided by an embodiment of the present invention;

fig. 2 isbase:Sub>A sectional view of the cooling fan in the embodiment of fig. 1 inbase:Sub>A directionbase:Sub>A-base:Sub>A;

FIG. 3 is a sectional view of the cooling fan in the embodiment of FIG. 1 taken in the direction B-B;

FIG. 4 is a sectional view of the cooling fan in the embodiment of FIG. 1 in the direction C-C;

fig. 5 is a second schematic structural diagram of a refrigeration fan according to an embodiment of the present invention;

fig. 6 is a third schematic structural diagram of a refrigeration fan according to an embodiment of the present invention;

fig. 7 shows a fourth schematic structural diagram of a refrigeration fan according to an embodiment of the present invention;

fig. 8 shows a fifth schematic structural view of a refrigeration fan according to an embodiment of the present invention;

fig. 9 shows a sixth schematic structural view of a refrigeration fan according to an embodiment of the present invention;

fig. 10 shows a seventh schematic structural diagram of a refrigeration fan according to an embodiment of the present invention;

fig. 11 shows an eighth schematic structural view of a refrigeration fan according to an embodiment of the present invention;

fig. 12 shows a ninth schematic structural diagram of a cooling fan according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 12 is:

100 refrigerating fan, 110 shell, 112 first air duct, 1122 first air inlet, 1124 first air outlet, 114 second air duct, 1142 second air inlet, 1144 second air outlet, 120 evaporator, 130 cold end wet curtain, 132 first wet curtain, 134 second wet curtain, 136 third wet curtain, 140 positioning part, 150 first cross flow fan, 160 condenser, 170 compressor and 180 second cross flow fan.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A cooling fan provided according to some embodiments of the present invention is described below with reference to fig. 1 to 12.

The first embodiment is as follows:

as shown in fig. 1, fig. 2 and fig. 3, according to a first embodiment of the present application, there is provided a cooling fan 100, where the cooling fan 100 includes: a housing 110 including a first air duct 112; an evaporator 120 disposed in the first air duct 112; and the cold-end wet curtain 130 is connected with the shell 110 and is used for cooling the airflow flowing through the first air duct 112.

The present application defines a refrigeration fan 100, and refrigeration fan 100 can generate the low temperature air current to discharge the low temperature air current to the region where the user is located, in order to satisfy user's refrigeration demand. Specifically, the refrigerating fan 100 includes a case 110, an evaporator 120, and a condenser 160. The housing 110 is a frame structure and an outer contour structure of the refrigeration fan 100, and is used for supporting and positioning other structures on the refrigeration fan 100, and also used for shielding and protecting an internal working structure of the refrigeration equipment, specifically, a first air duct 112 is formed inside the housing 110, and the evaporator 120 is arranged inside the first air duct 112. During operation, the refrigerant evaporates in the evaporator 120 to absorb heat, so as to cool the air flowing through the first air duct 112, and then the air is discharged in a directional manner to form a cold air flow for refrigeration.

To the technical problem that exists among the correlation technique, this application has set up cold junction wet curtain 130, and cold junction wet curtain 130 links to each other with casing 110 for cool down the air current that flows through first wind channel 112, reduce the temperature of the cold air stream that first wind channel 112 discharged in order to cooperate evaporimeter 120. Specifically, the cold-end wet curtain 130 can be disposed outside the first air duct 112 and opposite to the inlet and outlet of the first air duct 112, so as to reduce the temperature of the air flowing into the first air duct 112 or reduce the temperature of the air discharged from the first air duct 112. A cold side wet curtain 130 can also be provided inside the first air duct 112 for reducing the temperature of the air flowing from the inlet of the first air duct 112 to the evaporator 120 or for reducing the temperature of the air flowing to the outlet of the first air duct 112. Therefore, the cold-end wet curtain 130 is arranged on the upstream side or the downstream side of the evaporator 120, so that the temperature of the finally discharged cold airflow for refrigeration can be reduced, the refrigeration performance of the refrigeration fan 100 is improved, and the technical problem of poor refrigeration effect in the related art is solved. And then realize optimizing refrigeration fan 100 structure, promote refrigeration fan 100 performance, promote the technical effect that the user used the experience.

Example two:

as shown in fig. 1 and 3, in the second embodiment of the present application, the housing 110 further includes a first air inlet 1122 and a first air outlet 1124 communicating with the first air duct 112; the cold wet curtain 130 is positioned between the first air inlet 1122 and the first air outlet 1124 in the upward direction of the air flow in the first air duct 112.

In this embodiment, the position of the cold end wet curtain 130 is defined. Specifically, the housing 110 is further provided with a first air inlet 1122 communicating with the first air duct 112 and a first air outlet 1124 communicating with the first air duct 112, and the air flow flows into the first air duct 112 through the first air inlet 1122 and finally is discharged out of the first air duct 112 through the first air outlet 1124. On this basis, the cold end wet curtain 130 is disposed inside the first air duct 112, the direction of the airflow flowing from the first air inlet 1122 to the first air outlet 1124 is a first airflow flowing direction in the first flow channel, and the cold end wet curtain 130 is interposed between the first air inlet 1122 and the first air outlet 1124 in the first flow channel, so as to ensure that the airflow flowing through the first air duct 112 can be cooled under the effect of the cold end wet curtain 130. Moreover, the cold-end wet curtain 130 is arranged in the first air duct 112, so that the cold-end wet curtain 130 can be prevented from being interfered by the external environment of the shell 110, and the cooling effect of the cold-end wet curtain 130 is improved.

Example three:

as shown in fig. 5, in the third embodiment of the present application, the cooling fan 100 further includes: a positioning part 140 provided on the housing 110 and located between the first air inlet 1122 and the evaporator 120; the cold end wet curtain 130 includes: the first wet curtain 132 is connected to the positioning part 140 and covers the first air inlet 1122.

In this embodiment, a first alternative installation of the cold end wet curtain 130 is defined, with the cold end wet curtain 130 including a first wet curtain 132 depending on the installation location. Specifically, the housing 110 is provided with a positioning portion 140, and the positioning portion 140 is located in the first air duct 112 and is connected to the first air inlet 1122. The first wet curtain 132 is installed on the positioning portion 140 to fix the first wet curtain 132 at the inner side of the first air inlet 1122, and after the installation of the first wet curtain 132 is completed, the first wet curtain 132 can cover the first air inlet 1122 at the inner side of the first air inlet 1122, so as to ensure that the air flowing in from the first air inlet 1122 can be cooled in the first wet curtain 132. This structure can refrigerate the air current flowing into the first air duct 112 at the first time, thereby rapidly obtaining a low-temperature air current lower than the outdoor temperature, which is further cooled after exchanging heat with the evaporator 120, thereby reducing the temperature of the refrigerating air current finally output by the refrigerating fan 100. Thereby achieving the technical effect of improving the refrigeration performance of the refrigeration fan 100. In addition, the first wet curtain 132 disposed at the first air inlet 1122 can also prevent external high-temperature gas from interfering with normal operation of the isothermal end structure of the evaporator 120, thereby improving reliability of the cooling fan 100.

Specifically, the positioning portion 140 is a positioning rib, the positioning rib is disposed inside the first air inlet 1122, and the positioning rib is disposed around the first air inlet 1122 to enclose the positioning groove. The shape of the positioning slot is matched with the outer contour shape of the first wet curtain 132, and the first wet curtain 132 is embedded into the positioning slot to complete the assembly of the first wet curtain 132. The structure has the advantages of low complexity and small assembly difficulty, and is favorable for reducing the cost of the refrigeration fan 100.

As shown in fig. 1 and 3, in any of the above embodiments, the cooling fan 100 further includes: the first cross flow fan 150 is disposed in the first air duct 112, the evaporator 120 is disposed around the first cross flow fan 150, and the first air outlet 1124 is located on a side of the first cross flow fan 150 away from the evaporator 120.

In this embodiment, the refrigeration fan 100 is further provided with a first through-flow fan 150, the first through-flow fan 150 is disposed in the housing 110, and the first through-flow fan 150 is located between the evaporator 120 and the first air outlet 1124. The first axial flow fan 150 is formed by enclosing a plurality of axially arranged blades to form a cylindrical wind wheel structure. The first outlet 1124 corresponds to the first through-flow fan 150, the shape of the first outlet 1124 corresponds to the outer shape of the first through-flow fan 150, and the size of the first outlet 1124 is equal to or slightly larger than the size of the first through-flow fan 150.

During operation, the first axial flow fan 150 rotates, and the low-temperature gas near the evaporator 120 flows into the rotating first axial flow fan 150 and then is discharged out of the first air duct 112 through the first air outlet 1124. Compared to the embodiment in which the low-temperature gas in the vicinity of the evaporator 120 is directly exhausted from the first air outlet 1124, the first through-flow fan 150 is disposed to form a through-flow air channel between the evaporator 120 and the first air outlet 1124, so as to expand the coverage area of the low-temperature air flowing out through the first air outlet 1124. Therefore, the cooling amplitude of the output airflow is reduced on the basis of not reducing the total output cold quantity, the cooling amplitude can be reduced to about 6 ℃, and the technical problems that the discharged airflow is too large in cooling amplitude, a user is prone to discomfort and the user experience is poor due to direct blowing are solved under the condition that the refrigeration performance is not lost. And then realize optimizing refrigeration fan 100 structure, promote the user and feel the comfort level, promote the technical effect that the user used and experienced.

In any of the above embodiments, as shown in fig. 5, the cold end wet curtain 130 further comprises: a second wet curtain 134 disposed on a side of the evaporator 120 facing the first cross flow fan 150, and/or a third wet curtain 136 disposed on a side of the evaporator 120 facing away from the first cross flow fan 150.

As shown in fig. 6 and 7, in this embodiment, the cold end wet curtain 130 further includes a second wet curtain 134, and the second wet curtain 134 is disposed corresponding to the evaporator 120 and is located on a side of the evaporator 120 facing the first through-flow fan 150. Specifically, the second wet curtain 134 may be attached to a surface of the evaporator 120 facing the first through-flow fan 150, and may be spaced apart from a surface of the evaporator 120 facing the first through-flow fan 150, which is not rigidly limited in this embodiment. Through setting up the wet curtain 134 of second, can make the air current accomplish the heat transfer cooling back with evaporimeter 120, flow in the wet curtain 134 of second and then the secondary cooling to further reduce the temperature value of this part air current, improve the cold volume that final output air current carried. Thereby achieving the technical effect of improving the refrigeration performance of the refrigeration fan 100.

The cold side wet curtain 130 further includes a third wet curtain 136, and the third wet curtain 136 is disposed corresponding to the evaporator 120 and located on a side of the evaporator 120 facing away from the first through-flow fan 150. Specifically, the third wet curtain 136 may be attached to a surface of the evaporator 120 facing away from the first through-flow fan 150, and may be spaced apart from a surface of the evaporator 120 facing away from the first through-flow fan 150, which is not rigidly limited in this embodiment. By arranging the third wet curtain 136, the air flow can flow into the evaporator 120 for secondary cooling after being cooled by the wet curtain. Thereby further reducing the temperature value of the part of the airflow and improving the cold carried by the final output airflow. Thereby achieving the technical effect of improving the refrigeration performance of the refrigeration fan 100.

Specifically, in the cooling fan 100, one of the first wet curtain 132, the second wet curtain 134 and the third wet curtain 136 may be selectively disposed to cool the air flowing through the first air duct 112 by the single cold-end wet curtain 130. Can also set up the combination of the wet curtain 130 of above-mentioned three kinds of cold junctions or the wet curtain 130 of arbitrary two kinds of cold junctions simultaneously and cool down the air current to reinforcing cooling effect. In any of the above embodiments, the cold end wet curtain 130 comprises: and a fourth wet curtain coupled to the housing 110 to cover the first outlet 1124 at an inner side of the first outlet 1124.

In this embodiment, specifically, the housing 110 is provided with a mounting portion, which is located in the first air duct 112 and connected to the first air outlet 1124. The fourth wet curtain is installed on the installation department to fix the fourth wet curtain at the inboard of first air outlet 1124, accomplish the installation back of fourth wet curtain, the fourth wet curtain can cover first air outlet 1124 at the endotheca of first air outlet 1124, in order to guarantee to be carried out the cooling by the gaseous homoenergetic of first air outlet 1124 outflow and handle in the fourth wet curtain. After the air flow and the evaporator 120 finish heat exchange and temperature reduction, the air flow flows into the fourth wet curtain to be cooled for the second time, so that the temperature value of the part of the air flow is further reduced, and the cold carried by the final output air flow is improved. Thereby achieving the technical effect of improving the refrigeration performance of the refrigeration fan 100.

Specifically, the installation department is the location muscle, and the setting of location muscle is inboard at first air outlet 1124, and the setting of location muscle encircleing first air outlet 1124 to enclose and close the mounting groove. The shape of the mounting groove is matched with the shape of the outer contour of the fourth wet curtain, and the fourth wet curtain is embedded into the mounting groove to be assembled. The structure has the advantages of low complexity and small assembly difficulty, and is favorable for reducing the cost of the refrigeration fan 100.

Specifically, one of the first wet curtain 132, the second wet curtain 134, the third wet curtain 136 and the fourth wet curtain may be disposed on the cooling fan 100, and any one combination of the first wet curtain, the second wet curtain 134, the third wet curtain 136 and the fourth wet curtain may be further selected, and the cooling capacity of the cooling fan 100 may be further enhanced by disposing multiple cold-end wet curtains 130 in cooperation. For this application, no rigid limitation is made on the specific form of the cold-end wet curtain 130, and the requirement of enhancing the refrigeration performance is met.

Example four:

as shown in fig. 2 and 4, in the fourth embodiment of the present application, in any one of the above embodiments, the housing 110 further includes a second air duct 114, and the cooling fan 100 further includes: the condenser 160 is disposed in the second air duct 114 and connected to the evaporator 120.

In this embodiment, a second air duct 114 is further formed in the housing 110, and a condenser 160 is further disposed in the second air duct 114, the second air duct 114 and the condenser 160 correspond to a hot end of the cooling fan 100, and the first air duct 112 and the evaporator 120 correspond to a cold end of the cooling fan 100. Specifically, the inlets and outlets of the evaporator 120 and the condenser 160 are connected end to form a refrigerant circulation circuit. During operation, the refrigerant evaporates and absorbs heat in the evaporator 120 to cool the air flow in the first air duct 112, and then the air flow is discharged in a directional manner to form a cold air flow for refrigeration. Correspondingly, the refrigerant condenses in the condenser 160 to release heat, so as to heat the air flow in the second flow channel, and then the part of air is discharged directionally, so that the heat dissipation of the condenser 160 can be realized, and the refrigeration performance is not affected.

The housing 110 is further provided with a first air inlet communicating with the second air duct 114 and a second air outlet 1144 communicating with the second air duct 114, and the air flow flows into the second air duct 114 through the second air inlet 1142 and is discharged out of the second air duct 114 through the second air outlet 1144 after the heat dissipation of the condenser 160 is completed.

Example five:

in the fifth embodiment of the present application, the cooling fan 100 further includes: and the hot-end wet curtain is connected with the shell 110 and used for cooling the airflow flowing through the second air duct 114.

In this embodiment, the cooling fan 100 further includes a hot side wet curtain coupled to the housing 110 for cooling the airflow passing through the second air duct 114 to cooperate with the condenser 160. Specifically, the hot-end wet curtain can be disposed outside the second air duct 114 and opposite to the inlet and outlet of the second air duct 114, so as to reduce the temperature of the air flowing into the second air duct 114 or reduce the temperature of the air discharged from the second air duct 114. A warm end wet curtain can also be provided inside the second air duct 114 for reducing the temperature of the air flowing from the inlet of the second air duct 114 to the condenser 160 or for reducing the temperature of the air flowing to the outlet of the second air duct 114.

Specifically, according to the setting position of the hot end wet curtain, the hot end wet curtain comprises a fifth wet curtain and/or a sixth wet curtain, the fifth wet curtain is arranged on the upstream side of the condenser 160, the air flow flowing in from the second air inlet 1142 flows into the fifth wet curtain first, and flows to the condenser 160 after being cooled in the fifth wet curtain, so that a heat dissipation air flow with a lower temperature is provided for the condenser 160, the heat dissipation effect of the condenser 160 is improved, and the technical effect of improving the refrigeration performance of the refrigeration fan 100 is further achieved.

The sixth wet curtain is disposed at a leeward side of the condenser 160, and the airflow discharged from the condenser 160 to the second air outlet 1144 flows into the sixth wet curtain first, and is discharged to the outside through the second air outlet 1144 after being cooled in the sixth wet curtain. The temperature of the finally output heat dissipation airflow can be reduced by arranging the sixth wet curtain, so that the influence of the heat dissipation airflow on the environment refrigeration effect is reduced, and the refrigeration performance of the refrigeration fan 100 is improved in a phase-changing manner. Meanwhile, the sixth wet curtain is arranged to prevent high-temperature heat dissipation airflow from being blown to the body surface of a user by mistake, so that the practicability and reliability of the refrigeration fan 100 are improved, and the user experience is improved.

Specifically, the fifth wet curtain and the sixth wet curtain may be used alternatively or simultaneously, and this application is not limited thereto.

Example six:

as shown in fig. 1, fig. 2 and fig. 4, in the sixth embodiment of the present application, the housing 110 further includes a second air inlet 1142 and a second air outlet 1144 which are communicated with the second air duct 114, and the cooling fan 100 further includes: and the second cross-flow fan 180 is arranged in the second air duct 114, and the second cross-flow fan 180 is positioned between the condenser 160 and the second air outlet 1144.

In this embodiment, the refrigeration apparatus 100 is further provided with a second crossflow blower 180, the second crossflow blower 180 being disposed within the housing 110 and the second crossflow blower being located between the condenser 160 and the second air outlet 1144. The second crossflow blower 180 is enclosed by a plurality of axially arranged blades to form a cylindrical wind wheel. The second air outlet 1144 is disposed corresponding to the second cross flow fan 180, the shape of the second air outlet 1144 corresponds to the outer shape of the second cross flow fan 180, and the size of the second air outlet 1144 is equal to or slightly larger than the size of the first cross flow fan 150.

During operation, the second cross flow fan 180 rotates, and the high-temperature gas near the condenser 160 flows into the rotating second cross flow fan 180 first and then is discharged out of the second air duct 114 through the second air outlet 1144. Compared with the embodiment that the high-temperature air near the condenser 160 is directly exhausted from the second air outlet 1144, the second cross-flow fan 180 is arranged to construct a cross-flow air duct between the condenser 160 and the second air outlet 1144, and the cross-flow air duct can expand the coverage of the high-temperature air flow exhausted from the second air outlet 1144 on one hand, so that the temperature rise range of the exhausted air flow relative to the ambient temperature is reduced by expanding the air outlet area, and the body feeling comfort of a user is improved under the heating function. On the other hand, the cross-flow air duct can improve the airflow velocity and the airflow uniformity near the condenser 160, thereby improving the heat dissipation effect of the condenser 160, enabling the refrigerant to quickly release heat in the condenser 160, and further realizing the technical effect of improving the cooling and heating efficiency of the refrigeration device 100.

Example seven:

as shown in fig. 2, in the seventh embodiment of the present application, the casing 110 has a cylindrical shape, and both the axial direction of the first crossflow blower 150 and the axial direction of the second crossflow blower 180 coincide with the axial direction of the casing 110.

In this embodiment, the shape of the refrigerating apparatus 100 and the arrangement of the first and second crossflow blowers 150, 180 are defined. Specifically, the housing 110 has a cylindrical shape, and an axial direction of the cylindrical housing 110 coincides with a height direction of the refrigeration apparatus 100. The space occupied by the refrigeration device 100 in the horizontal direction can be reduced by arranging the housing 110 in a columnar shape, so that the refrigeration device 100 can be arranged in a narrow space, thereby reducing the difficulty in arranging the refrigeration device 100. On the other hand, the casing 110 is provided in a cylindrical shape, which helps to increase the height of the air outlet, so as to form a circular air flow in an indoor environment, thereby increasing the temperature adjustment rate.

On this basis, the first through-flow fan 150 is vertically disposed, that is, the axial direction of the first through-flow fan 150 coincides with the axial direction of the casing 110. Compared with the conventional cross-flow fan arranged transversely, the first air outlet 1124 is arranged corresponding to the first cross-flow fan 150, and the first cross-flow fan 150 arranged vertically on the cylindrical housing 110 helps to increase the total length of the first cross-flow fan 150 and enlarge the area of the first air outlet 1124, so that the coverage area of the air flow discharged by the first air outlet 1124 is further enlarged, and the cooling amplitude of the discharged cold air flow is reduced.

The second crossflow blower 180 is vertically arranged, i.e. the axial direction of the second crossflow blower 180 coincides with the axial direction of the casing 110. Compared with the conventional embodiment in which the cross-flow fan is transversely arranged, the second cross-flow fan 180 vertically arranged on the cylindrical housing 110 is helpful to increase the total length of the second cross-flow fan 180 and enlarge the area of the second air outlet 1144, so as to further enlarge the coverage area of the airflow discharged from the second air outlet 1144 and reduce the temperature rise amplitude of the discharged hot airflow. And then realize promoting the user and feel comfort level, promote the technical effect that the user used and experienced.

Meanwhile, the structure is beneficial to increasing the effective heat exchange area of the condenser 160, thereby improving the heat dissipation effect of the condenser 160 and further enhancing the refrigeration and heating effects of the refrigeration equipment 100.

In any of the above embodiments, the evaporator 120 and the condenser 160 are disposed offset in the height direction of the refrigeration apparatus 100.

In this embodiment, the evaporator 120 and the condenser 160 are disposed offset in the height direction of the refrigeration apparatus 100, that is, the evaporator 120 and the condenser 160 are respectively disposed at different heights to form a tower structure layout. The evaporator 120 and the condenser 160 are arranged in a staggered manner in the height direction, so that the distance between the cold end and the hot end of the refrigeration device 100 can be prolonged, the mutual interference of the evaporator 120 and the condenser 160 is avoided, and the refrigeration and heating performances of the refrigeration device 100 are ensured. Meanwhile, the refrigeration equipment 100 under the structure respectively outputs low-temperature airflow and high-temperature airflow at different heights, so that the possibility of mutual interference of the low-temperature airflow and the high-temperature airflow can be reduced, and the refrigeration and heating performances of the refrigeration equipment 100 are further improved.

In any of the above embodiments, the evaporator 120 is located above the condenser 160.

In this embodiment, following the previous embodiments, the structural layout of the refrigeration apparatus 100 is further refined. Specifically, the condenser 160 is disposed below the evaporator 120, and is disposed above the second outlet port 1144 corresponding to the first outlet port 1124.

Example eight:

as shown in fig. 9, 10 and 11, in the eighth embodiment of the present application, the first wind outlet 1124 and the second wind outlet 1144 are opposite to each other.

In this embodiment, the first air outlet 1124 disposed opposite to the evaporator 120 faces the front side of the housing 110, and the second air outlet 1144 disposed opposite to the condenser 160 faces the rear side of the housing 110. The structural layout enables the refrigeration equipment 100 to have more independent refrigeration and heating functions, and a user can conveniently select the refrigeration and heating functions for drinking according to application scenes.

Specifically, the refrigeration device 100 further includes a swivel base disposed below the housing 110, and the housing 110 is rotatably connected to the swivel base. When the refrigeration device 100 needs to perform refrigeration, the housing 110 is rotated to make the first air outlet 1124 aim at an area where a user is located, and the second air outlet 1144 faces away from the area where the user is located, so that the sensible temperature of the user is reduced by means of cold air output by the first air outlet 1124. Correspondingly, when the refrigeration device 100 needs to heat, the housing 110 is rotated to make the second air outlet 1144 align with the area where the user is located, and the first air outlet 1124 faces away from the area where the user is located, so that the temperature sensed by the user is raised by the hot air output by the second air outlet 1144.

As shown in fig. 8, 9 and 12, in any of the above embodiments, the first air inlet 1122 is opposite the first air outlet 1124; the number of the second air inlets 1142 is two, and the two second air inlets 1142 are respectively disposed at the left and right sides of the second air outlet 1144.

In this embodiment, the number and position of the air inlets are explained in connection with the foregoing embodiments. Specifically, the evaporator 120 is disposed above the condenser 160, and the first air inlet 1122 disposed corresponding to the evaporator 120 is disposed at a side of the condenser 160 facing away from the first air outlet 1124. The first air outlet 1124 faces the front side of the housing 110, and the first air inlet 1122 faces the rear side of the housing 110. The second air outlet 1144 faces the rear side of the housing 110, and the two second air inlets 1142 face the left and right sides of the housing 110, respectively. In the working process, the external air flow is injected into the first air duct 112 from the rear side of the casing 110, and is injected into the second air duct 114 from the left side and the right side of the casing 110, and is exhausted from the front end and the rear end of the casing 110 after heat exchange is completed, and the layout mode of left air inlet, right air inlet, front air outlet and rear air outlet is beneficial to improving the heat exchange efficiency of the evaporator 120 and the condenser 160, so that the refrigerating and heating effects of the refrigerating device 100 are improved.

Example nine:

as shown in fig. 2, in the ninth aspect of the present invention, the cooling fan 100 further includes: and a compressor 170 connecting the evaporator 120 and the condenser 160 to form a circulation flow path.

In this embodiment, the refrigerant heat exchange assembly further includes a compressor 170, the compressor 170 is disposed in the casing 110, one end of the compressor 170 is connected to the condenser 160, and the other end of the compressor 170 is connected to the evaporator 120, so as to form a closed refrigerant circulation loop by cooperating with the evaporator 120 and the condenser 160. During operation, the compressor 170 compresses a refrigerant to output a high-temperature and high-pressure refrigerant to the circulation circuit. The compressor 170 is disposed in the lower half area of the casing 110, and is located below the evaporator 120 and the first through flow fan 150, and the center of gravity of the refrigeration apparatus 100 can be lowered by disposing the compressor 170 below, so as to improve the stability of the refrigeration apparatus 100.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A cooling fan, characterized by comprising:

a housing including a first air duct;

the evaporator is arranged in the first air channel;

the cold end wet curtain is connected with the shell and used for cooling the airflow flowing through the first air duct;

a first through flow fan;

a positioning part;

the shell comprises a first air inlet communicated with the first air duct;

the cold end wet curtain comprises:

the first wet curtain is connected with the positioning part and covers the first air inlet;

a second wet curtain arranged on one side of the evaporator facing the first through-flow fan and/or

And the third wet curtain is arranged on one side of the evaporator, which is back to the first through flow fan.

2. The cooling fan as claimed in claim 1,

the shell further comprises a first air outlet communicated with the first air duct;

and the cold-end wet curtain is positioned between the first air inlet and the first air outlet in the upward flow direction of the air flow in the first air duct.

3. A refrigerating fan as recited in claim 2, further comprising:

the positioning part is arranged on the shell and positioned between the first air inlet and the evaporator.

4. The cooling fan as claimed in claim 2,

the first through-flow fan is arranged in the first air channel, the evaporator is wound on the periphery of the first through-flow fan, and the first air outlet is located on one side, deviating from the evaporator, of the first through-flow fan.

5. The cooling fan as claimed in claim 4, wherein the housing further includes a second air duct, the cooling fan further comprising:

and the condenser is arranged in the second air channel and is connected with the evaporator.

6. The cooling fan as claimed in claim 5, further comprising:

and the hot end wet curtain is connected with the shell and used for cooling the air flow flowing through the second air duct.

7. The cooling fan as claimed in claim 5, wherein the housing further includes a second air inlet and a second air outlet communicating with the second air duct, and the cooling fan further includes:

and the second cross-flow fan is arranged in the second air duct and is positioned between the condenser and the second air outlet.

8. The cooling fan as claimed in claim 7, wherein the casing is cylindrical, and both the axial direction of the first cross flow fan and the axial direction of the second cross flow fan are aligned with the axial direction of the casing.

9. A refrigerating fan as recited in claim 7, wherein said evaporator and said condenser are arranged to be offset in a height direction of said refrigerating fan.

10. A refrigerating fan as recited in claim 9, wherein said evaporator is located above said condenser.

11. A cooling fan as claimed in claim 10, wherein the first outlet opening and the second outlet opening are opposite.

12. The cooling fan as claimed in claim 11,

the first air inlet is opposite to the first air outlet;

the number of the second air inlets is two, and the two second air inlets are respectively arranged at the left side and the right side of the second air outlet.

13. A refrigerating fan as recited in any one of claims 5 to 12, further comprising:

a compressor connecting the evaporator and the condenser to form a circulation flow path.

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