CN213237796U - Evaporative cooling unit with frost prevention structure - Google Patents
Evaporative cooling unit with frost prevention structure Download PDFInfo
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- CN213237796U CN213237796U CN202021903216.6U CN202021903216U CN213237796U CN 213237796 U CN213237796 U CN 213237796U CN 202021903216 U CN202021903216 U CN 202021903216U CN 213237796 U CN213237796 U CN 213237796U
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Abstract
The utility model provides an evaporative cooling unit with frost prevention structure, include: the indoor circulating system is provided with an indoor air return inlet and an indoor air supply outlet, and indoor air enters the indoor circulating system from the indoor air return inlet and is then sent back to the indoor space from the indoor air supply outlet; the outdoor circulating system is provided with an outdoor air inlet and an outdoor air outlet, and outdoor air enters the outdoor circulating system from the outdoor air inlet and is then discharged to the outside from the outdoor air outlet; the metal filter screen is arranged at the outdoor air inlet to filter outdoor air; the refrigerating system can transfer the heat of the air in the indoor circulating system to the air in the outdoor circulating system to increase the temperature of the air in the outdoor circulating system; the anti-frost system is provided with an anti-frost air channel which can discharge the air with the temperature increased in the outdoor circulating system to the position of the metal filter screen. The heated outdoor air is discharged to the position of the metal filter screen through the frost prevention air duct, so that the surface temperature of the metal filter screen is improved, and frosting, icing and snow accumulation on the metal filter screen are prevented.
Description
Technical Field
The utility model relates to an air conditioner field especially indicates an evaporative cooling unit with frost prevention structure.
Background
The indirect evaporative cooling air conditioning unit is an efficient and energy-saving air conditioning product, and the product comprises indoor air circulation and outdoor air circulation. Because the quality of the outdoor air is greatly different according to the installation, use and application environment, an air filter screen is usually arranged at an outdoor air inlet in order to prevent impurities from entering the air-air heat exchanger. The common air filter screen is easy to damage after being cleaned for 2-3 times and needs to be replaced frequently. In order to reduce the operation cost, the outdoor air inlet side can be used for repeatedly cleaning and using the metal air filter screen.
However, the metal air filter screen is arranged on the outdoor air inlet side of the indirect evaporative cooling air conditioning unit, when the outdoor temperature is reduced in winter, the metal filter screen is easy to frost or even freeze, and snow is easy to accumulate on the surface of the metal filter screen during snowing, so that the metal filter screen is blocked. Thereby reducing the air intake of the outdoor circulation side and influencing the operation efficiency of the product. In order to solve the problem, measures such as belt type electric heating or a fan heater are usually arranged at the air inlet filter screen, the air inlet metal filter screen is heated at a low temperature in winter, and the measures can solve the problems of frosting or icing and snow accumulation, but cause extra power loss. The electric heating is exposed at the air inlet, so that potential safety hazards exist. In order to meet the use requirement in an extremely low-temperature and high-humidity environment, the electric heating power is high, and the running efficiency of the unit is reduced. Therefore, there is a need for an evaporative cooling unit that can safely and energy-efficiently remove frost, ice and snow on the metal filter screen.
SUMMERY OF THE UTILITY MODEL
In view of this, the main objective of the present invention is to provide an evaporative cooling unit with a frost prevention structure, so as to safely and energy-efficiently remove frost, ice and snow on the metal filter screen.
The utility model provides an evaporative cooling unit with frost prevention structure, include: the indoor circulating system is provided with an indoor air return inlet and an indoor air supply outlet, and indoor air enters the indoor circulating system from the indoor air return inlet and is then sent back to the indoor space from the indoor air supply outlet; the outdoor circulating system is provided with an outdoor air inlet and an outdoor air outlet, and outdoor air enters the outdoor circulating system from the outdoor air inlet and is then discharged to the outside from the outdoor air outlet; the metal filter screen is arranged at the outdoor air inlet to filter outdoor air; the refrigerating system can transfer the heat of the air in the indoor circulating system to the air in the outdoor circulating system to increase the temperature of the air in the outdoor circulating system; the anti-frost system is provided with an anti-frost air channel which can discharge the air with the temperature increased in the outdoor circulating system to the position of the metal filter screen.
By adopting the structure, the heated outdoor air can be discharged to the metal filter screen through the frost prevention air channel, the surface temperature of the metal filter screen can be improved by utilizing the outdoor air with higher temperature generated by self heat exchange, and frosting, icing and snow accumulation on the metal filter screen are prevented. Other heating equipment is not needed to be added, and the effective utilization of the waste heat is realized.
The utility model discloses it is preferred, be provided with the frost prevention fan in the frost prevention wind channel.
By adopting the structure, the heated outdoor air can be driven by the frost prevention fan to enter the frost prevention air channel. The problem that the outdoor air after temperature rise cannot enter the frost prevention air channel to heat the metal filter screen due to small static air pressure is avoided.
The utility model discloses it is preferred, be provided with the frost prevention air valve in the frost prevention wind channel, the switching in steerable frost prevention wind channel.
By adopting the structure, the opening and closing of the frost prevention air channel can be controlled, and the situation that when the outdoor temperature is high and defrosting, deicing and snow accumulation are not needed to be carried out on the metal filter screen is avoided, the heated outdoor air enters from the outdoor air inlet to influence the heat exchange efficiency of the outdoor air and the indoor air and further influence the refrigeration effect of the evaporative cooling unit.
The utility model preferably also comprises a temperature and humidity sensor arranged at the outdoor air inlet; and the controller is electrically connected with the temperature and humidity sensor, the frost prevention fan and the frost prevention air valve.
By adopting the structure, the temperature and the humidity of the outdoor air inlet can be detected through the temperature and humidity sensor, and the controller controls the on-off of the frost prevention fan and the frost prevention air valve through the temperature and the humidity of outdoor air.
The utility model discloses it is preferred, the outer peripheral face in frost prevention wind channel is provided with the heat preservation cotton.
By adopting the structure, the heat loss of outdoor air with higher temperature in the frost prevention air channel can be reduced, and the effects of defrosting, deicing and snow accumulation are further improved.
The utility model discloses it is preferred, the frost prevention wind channel has the opening that sets up along metal filters, so that the air discharge that the temperature risees metal filters position.
With the structure, the air with increased temperature can be blown to the metal filter screen through the opening arranged along the metal filter screen, so that the metal filter screen is uniformly heated.
The utility model discloses it is preferred, the frost prevention wind channel is located the intermediate position of evaporative cooling unit.
By adopting the structure, the frost prevention air duct is arranged in the middle position, so that the heat loss of the frost prevention air duct can be reduced. The defrosting efficiency is improved.
The utility model discloses preferentially, the refrigerating system includes the heat exchanger, the heat exchanger has the indoor entry and the indoor export of intercommunication, and the outdoor entry and the outdoor export of intercommunication; air in the indoor circulating system enters the heat exchanger from the indoor inlet and then returns to the indoor circulating system from the indoor outlet; and the air in the outdoor circulating system enters the heat exchanger from the outdoor inlet and then returns to the outdoor circulating system from the outdoor outlet.
With the structure, the indoor air and the outdoor air realize heat exchange in the heat exchanger, so that the temperature of the indoor air is reduced, and the temperature of the outdoor air is increased. Energy consumption is not needed, energy is saved, and the environment is protected.
The utility model discloses preferentially, the refrigerating system also includes the evaporator that sets up in the indoor exit position; a condenser disposed at an outdoor outlet position; the compressor is communicated with the evaporator and the condenser in series; and a refrigerant flowing between the evaporator, the condenser, and the compressor.
Adopt like above structure, can carry out the secondary cooling to indoor air through the evaporimeter that sets up in indoor export position, improve the refrigeration performance of evaporative cooling unit. By the condenser provided at the outdoor outlet, heat generated in the condenser due to the compression of the refrigerant by the compressor can be transferred to the air in the outdoor circulation system, raising the temperature of the air a second time.
The utility model discloses it is preferred, refrigerating system is still including setting up the spray set who cools down outdoor air at the heat exchanger upside.
With the above structure, the outdoor air entering the heat exchanger can be cooled by the spraying device 32. Therefore, the temperature difference between the outdoor air and the indoor air is increased, so that the outdoor air in the heat exchanger can take away more heat of the indoor air, and the efficiency of the heat exchanger is improved.
Drawings
FIG. 1 is a schematic view of the structure of the air intake filter screen side of the evaporative cooling unit in embodiment 1;
FIG. 2 is a schematic diagram of the evaporative cooling unit of FIG. 1;
FIG. 3 is a partial cross-sectional view of the frost prevention duct of FIG. 2;
FIG. 4 is a schematic view of the structure of the air intake filter of the evaporative cooling unit in embodiment 2;
FIG. 5 is a schematic diagram of the evaporative cooling unit of FIG. 4;
fig. 6 is a partial sectional view of the frost prevention duct of fig. 5.
Description of the reference numeralsAn indoor circulating system 1; an indoor return air duct 11; an indoor return air inlet 111; an indoor air supply duct 12; an indoor air supply outlet 121; an indoor fan 13; an outdoor circulation system 2; an outdoor air intake duct 21; an outdoor air inlet 211; an outdoor exhaust duct 22; an outdoor air outlet 221; an outdoor fan 23; a metal filter mesh 24; a refrigeration system 3; a heat exchanger 31; an indoor inlet 311; an indoor outlet 312; an outdoor inlet 313; an outdoor outlet 314; a spray device 32; a condenser 33; an evaporator 34; a compressor 35; an anti-frost system 4; an anti-frost air duct 41; a frost prevention air supply outlet 411; insulation cotton 412; an anti-frost damper 42; the damper blades 421; a damper actuator 422; a frost prevention blower 43; and a temperature and humidity sensor 44.
Detailed Description
Example 1
Next, the specific structure of the evaporative cooling unit in embodiment 1 will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of the structure of the air intake filter screen side of the evaporative cooling unit in embodiment 1; fig. 2 is a schematic structural diagram of the evaporative cooling unit in fig. 1. As shown in fig. 1 and 2, the evaporative cooling unit includes: the indoor circulating system 1 can suck indoor air into the evaporative cooling unit and then discharge the air into the room; the outdoor circulating system 2 can suck outdoor air into the evaporative cooling unit and then discharge the outdoor air to the outside; a refrigerating system 3 for refrigerating the air in the indoor circulating system 1 and transferring heat to the air in the outdoor circulating system 2; the anti-frost system 4 can prevent the metal filter 24 of the outdoor circulation system 2 from frosting or freezing.
The refrigeration system 3 includes a heat exchanger 31, which can be connected to the indoor circulation system 1 and the outdoor circulation system 2 to realize the heat exchange between the air in the indoor circulation system 1 and the air in the outdoor circulation system 2 in the heat exchanger 31, so as to reduce the temperature in the air in the indoor circulation system 1. The heat exchanger 31 has an indoor inlet 311 and an indoor outlet 312 communicating with each other, and an outdoor inlet 313 and an outdoor outlet 314 communicating with each other. The indoor inlet 311 is communicated with an indoor return duct 11 described below, and the indoor outlet 312 is communicated with an indoor supply duct 12 described below; the outdoor inlet 313 communicates with an outdoor air intake duct 21 described below, and the outdoor outlet 314 communicates with an outdoor air discharge duct 22 described below. So that the indoor air can be discharged from the indoor outlet 312 after entering the heat exchanger 31 through the indoor inlet 311; outdoor air may enter the heat exchanger 31 through the outdoor inlet 313 and then be discharged through the outdoor outlet 314, so that indoor air and outdoor air may be heat-exchanged.
The refrigeration system 3 further includes a shower device 32 and a condenser 33 provided at the outdoor outlet 314, an evaporator 34 provided at the indoor outlet 312, and a compressor 35 connected to the condenser 33 and the evaporator 34. Wherein, spray set 32 is located heat exchanger's upside, can spray out the cooling water, and the cooling water drips downwards, contacts in order to realize cooling to the outdoor air with the outdoor air at the in-process that drips, and the while water droplet is heated the evaporation endotherm and can further reduce the temperature of outdoor air to can take away more indoor air's heat when making outdoor air pass through heat exchanger 31, thereby improved heat exchanger 31's work efficiency. The condenser 33, the evaporator 34, and the compressor 35 are connected in series, and a refrigerant flows through the interior thereof. The refrigerant evaporates in the evaporator 34 from a liquid state to a gaseous state, and absorbs a large amount of heat during the evaporation process, thereby cooling the indoor air as it flows out through the evaporator 34 at the indoor outlet 312. The refrigerant in the gaseous state is compressed by the compressor 35 and then enters the condenser 33, so that the refrigerant is converted from the gaseous state into the liquid state and emits a large amount of heat. The outdoor air flowing out through the condenser 33 from the outdoor outlet 314 may take heat away from the condenser 33. The refrigerant changes to a liquid state in the condenser 33 and re-enters the evaporator 34, and cools the air passing through the evaporator 34 again.
The indoor circulation system 1 includes an indoor return duct 11 and an indoor supply duct 12. One end of the indoor air return duct 11 is connected with the indoor inlet 311 of the heat exchanger 31, and the other end forms an indoor air return opening 111 indoors; the indoor air duct 12 has one end connected to the indoor outlet 312 of the heat exchanger 31 and the other end forming an indoor air outlet 121 in the room. An indoor fan 13 is arranged in the indoor air supply duct 12 at a position close to the heat exchanger 31, the indoor fan 13 rotates to drive indoor air to enter the indoor air return duct 11 from the indoor air return opening 111, enter the heat exchanger 31 from the indoor inlet 311 and then enter the indoor air supply duct 12 from the indoor outlet 312, and finally, the indoor air is sent into the room from the indoor air supply opening 121, so that the circulation of the indoor air is completed.
The outdoor circulation system 2 includes an outdoor air intake duct 21 and an outdoor air discharge duct 22. One end of the outdoor air inlet duct 21 is connected with an outdoor inlet 313 of the heat exchanger 31, and the other end forms an outdoor air inlet 211 outdoors, and a metal filter screen 24 is arranged at the position of the outdoor air inlet 211 to filter outdoor air; the outdoor discharge duct 22 has one end connected to the outdoor outlet 314 of the heat exchanger 31 and the other end forming an outdoor discharge opening 221 outdoors. The outdoor fan 23 is disposed in the outdoor exhaust duct 22 near the heat exchanger 31, and the outdoor fan 23 rotates to drive outdoor air to enter the outdoor intake duct 21 from the outdoor intake port 211, enter the heat exchanger 31 from the outdoor intake port 313, enter the outdoor exhaust duct 22 from the outdoor outlet port 314, and finally discharge the outdoor air to the outdoor through the outdoor exhaust port 221, thereby completing the circulation of the outdoor air.
The frost prevention system 4 includes a frost prevention air duct 41, one end of the frost prevention air duct 41 is connected to the outdoor exhaust air duct 22, and the other end forms a frost prevention air supply outlet 411 at the upper end of the metal filter screen 24. The frost prevention air supply outlet 411 is a flat opening provided along the metal filter 24 so that the air in the frost prevention air duct 41 can be uniformly blown to the metal filter 24.
Fig. 3 is a partial sectional view of the frost prevention duct of fig. 2. As shown in fig. 2 and 3, the frost prevention system 4 further includes a frost prevention air valve 42 disposed in the frost prevention air duct 41 near one end of the outdoor air duct 22, and the frost prevention air valve 42 has an air valve blade 421 and an air valve actuator 422. The air valve actuator 422 is arranged on the side wall of the frost prevention air duct 41, the air valve blade 421 is a plate-shaped component arranged on the air valve actuator 422, and the air valve blade 421 is positioned in the frost prevention air duct 41 and has a shape and a size matched with the inner shape of the frost prevention air duct 41. When the air valve actuator 422 drives the air valve blade 421 to be at the position a-a in fig. 3, the frost prevention air duct 41 is in an open state, and air in the outdoor air exhaust duct 22 can enter the frost prevention air duct 41 through the frost prevention air valve 42; when the air valve actuator 422 drives the air valve blade 421 to the position B-B in fig. 3, the frost prevention air duct 41 is in the closed state, and the air in the outdoor air exhaust duct 22 cannot enter the frost prevention air duct 41 through the frost prevention air valve 42. A frost prevention fan 43 is disposed in the frost prevention duct 41 at a position close to the frost prevention damper 42 to drive the air flow in the frost prevention duct 41. In addition, the outer peripheral surface of the frost prevention air duct 41 is adhered with heat insulation cotton 412 to reduce heat loss during the process of air flowing through the frost prevention air duct 41. The outdoor air inlet 211 is provided with a temperature and humidity sensor 44, the frost prevention air valve 42, the frost prevention fan 43 and the spraying device 32 which are electrically connected with the controller, and the opening and closing of the frost prevention air valve 42, the frost prevention fan 43 and the spraying device 32 can be controlled according to the temperature and the humidity of the environment.
Further, as shown in fig. 1 and 2, the entire evaporative cooling unit has a rectangular parallelepiped shape. The heat exchanger 31 is horizontally arranged in the middle in a cuboid shape, the indoor air supply duct 12 and the indoor air return duct 11 are respectively positioned at the left side and the right side of the heat exchanger 31, and the indoor air inlet and the indoor air outlet 121 are positioned in the middle of the evaporative cooling unit; the outdoor air inlet duct 21 is located at the lower part of the heat exchanger 31, and the outdoor air inlets 211 are formed at both sides of the lower part of the evaporative cooling unit; the outdoor exhaust duct 22 is located above the heat exchanger 31, and the outdoor exhaust port 221 is formed in the upper side of the evaporative cooling unit. The frost prevention duct 41 is located outside the indoor return duct 11, extends downward from the upper outdoor exhaust duct 22 to the position of the outdoor air inlet duct 21, and then extends horizontally to each metal filter screen 24.
When the outdoor air conditioner works, the outdoor fan 23 rotates, outdoor air enters the evaporative cooling unit from the outdoor air inlet duct 21 and enters the heat exchanger 31 from the outdoor inlet 313, and the outdoor air flows out of the heat exchanger 31, then carries away heat emitted by the condenser 33 through the condenser 33 and is discharged to the outdoor through the outdoor air outlet duct 22. The indoor fan 13 rotates, the indoor air enters the heat exchanger 31 through the indoor return air duct 11, flows out of the heat exchanger 31, passes through the evaporator 34, is cooled by the evaporator 34, enters the indoor air supply duct 12, and is sent back to the indoor. The indoor air has a higher temperature, the outdoor air has a lower temperature after being cooled by the spraying device 32, and the indoor air and the outdoor air exchange heat in the heat exchanger 31. The indoor air is cooled down for the first time in the heat exchanger 31, and the outdoor air is heated up for the first time in the heat exchanger 31. Since the refrigerant in the evaporator 34 needs to absorb a large amount of heat for evaporation, the indoor air is cooled for the second time when passing through the evaporator 34 to form cold air with a lower temperature, and the cold air is sent into the room, so as to reduce the indoor temperature. Meanwhile, the outdoor air is heat-exchanged with the indoor air in the heat exchanger 31 to realize the first temperature rise, and the outdoor air after the temperature rise enters the outdoor exhaust duct 22 through the condenser 33. The refrigerant changes from gas state to liquid state in the condenser 33 to release a large amount of heat, and the outdoor air passes through the condenser 33 to take away the heat emitted from the condenser 33 to be heated for the second time to form hot air with higher temperature and is discharged to the outdoor.
When the outdoor temperature is lower than 2 ℃, the indoor air temperature is far higher than the outdoor air temperature because the indoor equipment can emit a large amount of heat when running. There is no need to cool the outdoor air by the spray device 32 before the outdoor air enters the heat exchanger 31, and in order to prevent the water from freezing, the water is drained and the operation of the spray device 32 is stopped. When the temperature and humidity sensor 44 detects that the outdoor air temperature is less than or equal to 0 ℃ and the relative humidity is greater than or equal to 85%, the anti-frost air valve 42 is opened, the anti-frost fan 43 operates, and high-temperature outdoor air in the outdoor exhaust duct 22 can be uniformly blown onto the surface of the metal filter screen 24 through the anti-frost air duct 41, so that the function of preventing frosting or icing is achieved. Similarly, in winter, snow can be melted by high-temperature outdoor air, and the metal filter screen 24 is prevented from being blocked. When the outdoor temperature is high and there is no risk of frost, ice or snow, the frost prevention fan 43 stops running, the frost prevention air valve 42 is closed, and the high-temperature outdoor air in the outdoor exhaust duct 22 and the outdoor air in the outdoor air inlet duct 21 are prevented from being mixed to affect the working efficiency.
Example 2
The present application also provides a second embodiment, and the specific structure of the evaporative cooling unit in embodiment 2 is described in detail below with reference to the drawings.
FIG. 4 is a schematic view of the structure of the evaporative cooling unit of embodiment 2 on one side of a metal filter screen; fig. 5 is a schematic structural diagram of the evaporative cooling unit in fig. 4. As shown in fig. 4 and 5, the evaporative cooling unit of embodiment 2 operates in the same manner as in embodiment 1, but differs in the arrangement of the individual systems and components. The method comprises the following specific steps:
the whole evaporative cooling unit is in a cuboid shape. The heat exchanger 31 is disposed in a cube inclined at an angle of 45 ° at a lower right corner, and the indoor inlet 311 and the outdoor inlet are inclined upward, and the indoor outlet 312 and the outdoor outlet 314 are respectively inclined downward. The outdoor discharge duct 22 is disposed on one side of the heat exchanger 31, the indoor return duct 11 is disposed on the upper side of the heat exchanger 31, and the indoor blowing duct 12 is located in a corner space opposite to the outdoor outlet 314, while the outdoor intake duct 21 is eliminated. Accordingly, metal filter net 24 is disposed at outdoor inlet 313 of heat exchanger 31, and spray device 32 is disposed at heat exchanger 31 and metal filter net 24, such that spray device 32 is located at the upper portion of the heat exchanger, thereby increasing the contact time between the cooling water sprayed by spray device 32 and the outdoor air. A temperature and humidity sensor 44 is also disposed at a position opposite to the outside of the metal filter 24 to detect the temperature and humidity of the outdoor air. The outdoor discharge duct 22 has a corner at which two outdoor fans 23 are disposed to obtain a strong static wind pressure in the outdoor discharge duct 22. The anti-frost air duct 41 is horizontally disposed at the lower portion of the indoor air return duct 11, one end of which is connected to the outdoor air exhaust duct 22, and the other end of which extends to the upper end of the metal filter 24, and forms an anti-frost air opening 411 at the upper end of the metal filter 24. Fig. 6 is a partial sectional view of the frost prevention duct of fig. 5. As shown in fig. 5 and 6, a frost prevention air valve 42 is disposed at one end of the frost prevention air duct 41 close to the outdoor exhaust duct 22, and the frost prevention air valve 42 is electrically connected to a temperature and humidity sensor 44. The outer peripheral surface of the frost prevention air duct 41 is provided with heat insulation cotton 412 for heat insulation.
Compared with the embodiment 1, the frost prevention air duct 41 in the embodiment 2 is located in the middle of the evaporative cooling unit, and is beneficial to reducing heat loss of outdoor air in the frost prevention air duct 41. In embodiment 2, since there are more outdoor fans 23, and a higher static air pressure can be generated in the outdoor exhaust duct 22 during operation, the frost prevention fan 43 is not needed in the frost prevention duct 41, and enough high-temperature outdoor air can enter the frost prevention duct 41 to heat and defrost the metal filter 24.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An evaporative cooling unit having a frost prevention structure, comprising:
the indoor circulating system is provided with an indoor air return inlet and an indoor air supply outlet, and indoor air enters the indoor circulating system from the indoor air return inlet and is then sent back to the indoor space from the indoor air supply outlet;
the outdoor circulating system is provided with an outdoor air inlet and an outdoor air outlet, and outdoor air enters the outdoor circulating system from the outdoor air inlet and is then discharged to the outside from the outdoor air outlet;
the metal filter screen is arranged at the outdoor air inlet to filter outdoor air;
the refrigerating system can transfer the heat of the air in the indoor circulating system to the air in the outdoor circulating system to increase the temperature of the air in the outdoor circulating system;
the anti-frost system is provided with an anti-frost air channel which can discharge the air with the temperature increased in the outdoor circulating system to the position of the metal filter screen.
2. The evaporative cooling unit with the frost prevention structure as set forth in claim 1, wherein a frost prevention fan is provided in the frost prevention duct.
3. The evaporative cooling unit with the frost prevention structure as set forth in claim 2, wherein a frost prevention air valve is provided in the frost prevention air duct to control opening and closing of the frost prevention air duct.
4. The evaporative cooling unit with the frost prevention structure according to claim 3, further comprising a temperature and humidity sensor disposed at an outdoor air inlet; and the controller is electrically connected with the temperature and humidity sensor, the frost prevention fan and the frost prevention air valve.
5. The evaporative cooling unit with the frost prevention structure as set forth in claim 1, wherein insulation cotton is disposed on an outer circumferential surface of the frost prevention duct.
6. The evaporative cooling unit having a frost prevention structure of claim 1, wherein the frost prevention duct has an opening provided along a metal filter to discharge the air having the increased temperature to a position of the metal filter.
7. The evaporative cooling unit with the frost prevention structure of claim 1, wherein the frost prevention duct is located at a middle position of the evaporative cooling unit.
8. The evaporative cooling unit having the frost preventing structure according to any of claims 1 to 7, wherein the refrigeration system includes a heat exchanger having an indoor inlet and an indoor outlet in communication, and an outdoor inlet and an outdoor outlet in communication; air in the indoor circulating system enters the heat exchanger from the indoor inlet and then returns to the indoor circulating system from the indoor outlet; and the air in the outdoor circulating system enters the heat exchanger from the outdoor inlet and then returns to the outdoor circulating system from the outdoor outlet.
9. The evaporative cooling unit having the frost prevention structure of claim 8, wherein the refrigeration system further comprises an evaporator provided at an indoor outlet position; a condenser disposed at an outdoor outlet position; the compressor is communicated with the evaporator and the condenser in series; and a refrigerant flowing between the evaporator, the condenser, and the compressor.
10. The evaporative cooling unit having the frost prevention structure of claim 8, wherein the cooling system further comprises a spray device disposed at an upper side of the heat exchanger to cool down the outdoor air.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020213530079 | 2020-07-10 | ||
| CN202021353007 | 2020-07-10 |
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| Publication Number | Publication Date |
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| CN213237796U true CN213237796U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021903216.6U Active CN213237796U (en) | 2020-07-10 | 2020-09-03 | Evaporative cooling unit with frost prevention structure |
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| CN (1) | CN213237796U (en) |
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2020
- 2020-09-03 CN CN202021903216.6U patent/CN213237796U/en active Active
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