CN114151873B - Evaporative cooling device, control method thereof and air conditioner - Google Patents

Evaporative cooling device, control method thereof and air conditioner Download PDF

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Publication number
CN114151873B
CN114151873B CN202111462138.XA CN202111462138A CN114151873B CN 114151873 B CN114151873 B CN 114151873B CN 202111462138 A CN202111462138 A CN 202111462138A CN 114151873 B CN114151873 B CN 114151873B
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China
Prior art keywords
water
wet film
evaporative cooling
air
cooling device
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Application number
CN202111462138.XA
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Chinese (zh)
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CN114151873A (en
Inventor
马腾飞
邢天一
杜帅华
郭忠玉
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202111462138.XA priority Critical patent/CN114151873B/en
Publication of CN114151873A publication Critical patent/CN114151873A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/42—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger characterised by the use of the condensate, e.g. for enhanced cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • F24F2013/225—Means for preventing condensation or evacuating condensate for evacuating condensate by evaporating the condensate in the cooling medium, e.g. in air flow from the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Abstract

The application provides an evaporative cooling device, a control method thereof and an air conditioner. The evaporative cooling device comprises a frame (1), wherein a first water passing channel (2) and a first water distributor (3) are arranged at the top of the frame (1), a wet film (5) is arranged in the frame (1), the wet film (5) is positioned below the first water passing channel (2), the first water distributor (3) is positioned above the first water passing channel (2), the first water distributor (3) comprises an accommodating cavity and an overflow groove (6), water flows into the accommodating cavity, and the water flows to the wet film (5) from the first water passing channel (2) after overflowing through the overflow groove (6). According to the evaporative cooling device, the water distribution uniformity can be improved, and the heat dissipation effect of the evaporative cooling device is improved.

Description

Evaporative cooling device, control method thereof and air conditioner
Technical Field
The application relates to the technical field of air conditioners, in particular to an evaporative cooling device, a control method of the evaporative cooling device and an air conditioner.
Background
The function of the air conditioner to create a comfortable environment is well known, and the energy consumption of the air conditioner is increased with the rapid increase of the use amount of the air conditioner. In hot summer, the air is mainly driven by the fan to dissipate heat of the condenser of the outdoor unit during the refrigeration operation of the air conditioner. But when the ambient temperature is higher (more than or equal to 37 ℃), the heat dissipation effect of the condenser cooled by only air becomes poor, the energy consumption of air conditioner operation is increased, and the power consumption is correspondingly increased.
The prior art discloses a precooling type condenser and an air conditioning unit thereof, wherein water is drenched at an air inlet of the condenser, and the temperature of air at the inlet of the condenser is reduced by utilizing the surface water evaporation of a wet film, so that the condensation temperature at the side of a refrigerant is reduced, the safety and the economical efficiency of the integral operation of the system energy efficiency are improved, and scaling caused by the direct contact of water and fins is avoided.
However, the wet film has poor water distribution uniformity in the use process, so that water is unevenly distributed on the surface of the wet film, and the heat dissipation effect of the wet film is reduced.
Disclosure of Invention
Therefore, an object of the present invention is to provide an evaporative cooling device, a control method thereof, and an air conditioner, which can improve the uniformity of water distribution and improve the heat dissipation effect of the evaporative cooling device.
In order to solve the above problems, the present application provides an evaporative cooling device, which includes a frame, a first water passing channel and a first water distributor are arranged on the top of the frame, a wet film is arranged in the frame, the wet film is located below the first water passing channel, the first water distributor is located above the first water passing channel, the first water distributor includes an accommodating cavity and an overflow groove, water flows enter the accommodating cavity, and flows to the wet film from the first water passing channel after overflowing through the overflow groove.
Preferably, the overflow groove extends along the length of the frame in the horizontal direction, the first water passing channel is arranged corresponding to the overflow groove, and the length of the first water passing channel is greater than or equal to the length of the overflow groove.
Preferably, the cross section of the first water distributor is a quarter sector, one cathetus of the first water distributor is positioned on the top surface of the frame, the other cathetus of the first water distributor extends upwards perpendicular to the top surface of the frame, and the overflow trough is positioned on the cambered surface of the first water distributor.
Preferably, the overflow launder is located at the one-quarter arc to two-thirds arc of the arc surface from top to bottom.
Preferably, the side wall of the first water passing channel is flush with the bottom end of the cambered surface of the first water distributor, or the first water passing channel is positioned below the bottom end of the cambered surface of the first water distributor.
Preferably, the side of the frame is provided with an installation groove, and the wet film is installed into the frame through the installation groove.
Preferably, the top of the frame is further provided with a second water distributor and a second water passing channel, the second water distributor is located above the second water passing channel and comprises an accommodating cavity and an overflow groove, and water flows enter the accommodating cavity, overflow from the overflow groove and then flow to the wet film from the second water passing channel.
Preferably, a water storage box is arranged at the bottom of the frame, and the water storage box is connected to the accommodating cavity of the second water distributor through a water pump and supplies water to the accommodating cavity of the second water distributor.
Preferably, the top of the water storage box is provided with a first partition plate, the first partition plate is provided with a through hole, and water flowing through the wet film enters the water storage box through the through hole after reaching the first partition plate.
Preferably, a second partition plate is arranged in the frame, the second partition plate divides an installation space in the frame into an upper part and a lower part, the two wet films are respectively arranged in one of the installation spaces, through holes which are vertically communicated are formed in the second partition plate, and the through holes are uniformly distributed in the second partition plate.
Preferably, the frame is provided with an air passage on the side wall of the air outlet side of the wet film, and the air passage is provided with air guide blades capable of opening or closing the air passage.
Preferably, the air guide blade is hinged to one side of the air passing channel far away from the wet film and is opened towards the outer side; or the wind guide blades are hinged on one side of the wind passing channel close to the wet film and are opened towards the inner side.
Preferably, the frame is provided with wind guide vanes on each side wall on the circumferential side of the wet film.
According to another aspect of the present application, there is provided an air conditioner comprising an outdoor unit, and further comprising the evaporative cooling device of the above.
Preferably, the outdoor unit comprises a casing, an air inlet is formed in the casing, an outdoor heat exchanger and a fan are arranged in the casing, the evaporative cooling device is arranged at the air inlet, the outdoor heat exchanger is arranged corresponding to the air inlet, and the fan is located on one side, away from the evaporative cooling device, of the outdoor heat exchanger.
According to another aspect of the present application, there is provided a control method of the evaporative cooling device, including:
acquiring the outdoor air temperature and the relative humidity;
when the temperature of the outdoor air is higher than the set temperature and the relative humidity is lower than or equal to 70%, the wet film is controlled to work, and meanwhile water is supplied to the first water distributor, so that water flows to the wet film from the first water distributor in an overflowing mode, and the wet film is humidified.
Preferably, when the wet film starts to work, the air guide blades are controlled to be closed.
Preferably, when the outdoor air temperature is higher than the set temperature, or when the outdoor air temperature is lower than the set temperature and the relative humidity is less than or equal to 70%, detecting a water level switch of the water storage box;
when a water level switch of the water storage box is turned on, the water pump is controlled to work, and the water storage box is used for supplying water to the first water distributor and/or the second water distributor.
Preferably, when the outdoor air temperature is higher than the set temperature, or when the outdoor air temperature is lower than the set temperature and the relative humidity is less than or equal to 70%, detecting a water level switch of the water storage box;
when a water level switch of the water storage box is closed, detecting whether the indoor unit generates condensed water or not;
when detecting that the indoor unit generates condensed water, controlling the wet film to work, and simultaneously supplying water to the first water distributor and/or the second water distributor by using the condensed water on the side of the indoor unit to control the air guide blades to be closed;
when detecting that the indoor unit does not produce the condensed water, controlling the wet film not to work and controlling the air guide blades to open.
Preferably, when the outdoor air temperature is lower than the set temperature, or when the outdoor air temperature is higher than the set temperature and the relative humidity is higher than 70%, the air guide blades are controlled to be opened, and the water pump and the wet film are controlled not to work.
The evaporative cooling device comprises a frame, wherein a first water passing channel and a first water distributor are arranged at the top of the frame, a wet film is arranged in the frame, the wet film is positioned below the first water passing channel, the first water distributor is positioned above the first water passing channel, the first water distributor comprises an accommodating cavity and an overflow groove, water flows into the accommodating cavity and flows to the wet film from the first water passing channel after overflowing through the overflow groove. Among this evaporative cooling device, first water-locator supplies water to wet membrane through the overflow mode, can utilize the even rivers of overflow mode, can reach higher water distribution homogeneity under low circulation flow, has effectively reduced the water pump consumption, has improved evaporative cooling device's radiating effect.
Drawings
Fig. 1 is a perspective view illustrating an external unit of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a plan view of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a side view of an outdoor unit of an air conditioner according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an evaporative cooling apparatus according to an embodiment of the present application;
FIG. 5 is an enlarged schematic view of FIG. 4 at A;
FIG. 6 is a schematic top view of an evaporative cooling apparatus in accordance with an embodiment of the present application;
FIG. 7 is a schematic side view of an evaporative cooling apparatus according to one embodiment of the present application;
fig. 8 is a control schematic diagram of an evaporative cooling apparatus according to an embodiment of the present application.
The reference numbers are given as:
1. a frame; 2. a first water passage; 3. a first water distributor; 4. a through hole; 5. wet film forming; 6. an overflow trough; 7. an installation port; 8. a second water distributor; 9. a second water passage; 10. a water storage box; 11. a first separator; 12. a second separator; 13. an air passage; 14. wind guiding blades; 15. a housing; 16. an air inlet; 17. an outdoor heat exchanger; 18. a fan; 19. a compressor.
Detailed Description
Referring to fig. 1 to 8 in combination, according to an embodiment of the present application, an evaporative cooling device includes a frame 1, a first water passing channel 2 and a first water distributor 3 are disposed at a top of the frame 1, a wet film 5 is disposed in the frame 1, the wet film 5 is located below the first water passing channel 2, the first water distributor 3 is located above the first water passing channel 2, the first water distributor 3 includes a receiving cavity and an overflow groove 6, and water flows into the receiving cavity, overflows through the overflow groove 6, and then flows from the first water passing channel 2 to the wet film 5.
Among this evaporative cooling device, first water-locator 3 supplies water to wet membrane through the overflow mode, can utilize the even rivers of overflow mode, can reach higher water distribution homogeneity under low circulation flow, has effectively reduced the water pump consumption, has improved evaporative cooling device's radiating effect.
In one embodiment, the overflow trough 6 is a slit structure, which has a larger water outlet area compared to a conventional small-hole water outlet structure, and the overflow trough 6 is not located at the bottom of the first water distributor 3 and has a predetermined distance from the bottom wall of the first water distributor 3 due to the implementation of the overflow structure, so that the water distribution position of the first water distributor 3 can be effectively prevented from being blocked by scale or impurities.
The conventional structure sets up apopore or water seam in the below, will take place to go out water many from the place that the position of intaking is close, and the inhomogeneous phenomenon of rivers that the place that is far away from the position of intaking goes out water and is few. And the overflow structure is then through the interior water level of container rise, when meetting the container border, rivers will be followed the border and evenly flowed out, therefore the overflow need not realize through water pressure, and the structure is simpler, and the water distribution homogeneity is better.
The wet film 5 can be made of materials with good moisture absorption performance, such as a high-molecular wet film, a plant fiber wet film, a non-woven wet film, a resin material, a ceramic material and the like.
In one embodiment, the overflow groove 6 extends along the length of the frame 1 in a horizontal direction, the first water passage 2 is disposed corresponding to the overflow groove 6, and the length of the first water passage 2 is greater than or equal to the length of the overflow groove 6.
The overflow groove 6 extends along the horizontal direction of the frame 1, and the extending length is approximately the same as the length of the wet film 5 in the direction, and can be greater than or less than the length of the wet film 5 in the direction, and also can be completely equal to the length in the direction, and the length of the first water passing channel 2 in the direction is greater than or equal to the length of the overflow groove 6, so that the water flow overflowing from the overflow groove 6 can completely pass through the first water passing channel 2 to reach the wet film 5, and the wet film 5 can be humidified more completely.
In order to ensure the humidifying effect on the wet membrane 5, the water flowing down from the overflow groove 6 of the first water distributor 3 through the first water passing channel 2 should be completely located in the bearing area of the wet membrane 5, so that the water flow can be more effectively absorbed by the wet membrane 5, and the water flow utilization efficiency is improved.
In one embodiment, the first water distributor 3 has a quarter-fan shape in cross section, one cathetus of the first water distributor 3 is located on the top surface of the frame 1, the other cathetus extends upward perpendicular to the top surface of the frame 1, and the overflow chute 6 is located on the arc surface of the first water distributor 3.
The cross-section of first water-locator 3 is the fan-shaped of quarter circle, or becomes right angle fan-shaped, can utilize the volume of the first water-locator 3 of sectorial circular arc evagination structure increase, improves the volume water yield, for wet film 5 provides sufficient comdenstion water, and the arc surface can carry out effective water conservancy diversion to the overflow, makes things convenient for the adherence of rivers to flow more, avoids appearing the uneven phenomenon of flow of rivers.
In one embodiment, the overflow groove 6 is located at the arc from the top to the bottom of the arc surface, so that not only can the problem that the overflow effect cannot be effectively utilized due to too low height of the overflow groove 6 be avoided, but also the problem that the overflow water amount is too small due to too much water accumulation in the first water distributor 3 due to too high height of the overflow groove 6 can be avoided. Preferably, the overflow launder 6 is located at the top to bottom third of the arc surface.
In one embodiment, the side wall of the first water passing channel 2 is flush with the bottom end of the cambered surface of the first water distributor 3. In this embodiment, this structure can avoid first water distribution channel 2 to cause the hindrance to the rivers flow of first water-locator 3, guarantees the rivers effect of flowing, can also make the comdenstion water overflow simultaneously flow the back, along the in-process that the surface of first water-locator 3 flows, carries out further water conservancy diversion through the lateral wall of first water distribution channel 2, improves the water conservancy diversion effect to the comdenstion water, further improves rivers distribution uniformity.
In one embodiment, the first water passing channel 2 is located below the bottom end of the arc surface of the first water distributor 3. In this embodiment, after overflowing, the condensed water in the first water distributor 3 flows along the surface of the first water distributor 3, and after reaching the bottom, the condensed water directly flows from the first water passing channel 2 to the wet membrane 5 to humidify the wet membrane 5, so that the problem that the first water passing channel 2 obstructs the flow of the water flow is effectively avoided, and the flow efficiency of the water flow is improved.
In one embodiment, the frame 1 is provided with mounting openings 7 on its sides, and the wet film 5 is mounted into the frame 1 through the mounting openings 7. In this embodiment, by providing the mounting opening 7 on the side surface of the frame 1, the wet film 5 can be easily inserted into the frame 1 from the side surface through the mounting opening 7, or can be easily pulled out from the frame 1 through the mounting opening 7, and the difficulty in attaching and detaching the wet film 5 can be reduced.
In one embodiment, the top of the frame 1 is further provided with a second water distributor 8 and a second water passing channel 9, the second water distributor 8 is located above the second water passing channel 9, the second water distributor 8 comprises a containing cavity and an overflow groove 6, and water flows into the containing cavity, overflows through the overflow groove 6 and then flows from the second water passing channel 9 to the wet film 5. In this embodiment, by providing the second water distributor 8 and the second water passing channel 9, multiple rows of water distribution can be performed on the wet membrane 5, and the water distribution efficiency and the water distribution uniformity are improved.
In one embodiment, a water storage box 10 is arranged at the bottom of the frame 1, and the water storage box 10 is connected to the accommodating cavity of the second water distributor 8 through a water pump and supplies water to the accommodating cavity of the second water distributor 8. In this embodiment, the condensed water of the first water distributor 3 mainly comes from the condensed water of the indoor machine side, and the first water distributor 3 is directly supplied with water by the indoor machine side, while the condensed water of the second water distributor 8 mainly comes from the water storage box 10, so that the characteristic that the temperature of the condensed water of the indoor machine side is low can be utilized, the first water distributor 3 can more fully utilize the cold energy of the condensed water, and the incompletely evaporated condensed water collected in the water storage box 10 after the first use can be reused by the second water distributor 8, thereby improving the utilization efficiency of the cold energy.
A sterilization filter screen and/or ion exchange resin can be arranged in the water storage box 10 to prevent the water distributor and the wet film 5 from being blocked by water pollution.
A water level switch and a water pump are further arranged in the water storage box 10, the water storage box 10 is connected to the second water distributor 8 through a water pipe, the water level switch can monitor the water level height in the water storage box 10, and after the water level height in the water storage box 10 reaches a preset height, the water pump is controlled to be started, so that the water pump and the water pipe are utilized to smoothly convey the condensed water in the water storage box 10 to the second water distributor 8, and the water supply to the second water distributor 8 is completed.
In other embodiments, the water storage box 10 may also simultaneously supply water to the first water distributor 3 and the second water distributor 8.
In one embodiment, a first partition 11 is disposed on the top of the water storage box 10, a through hole 4 is formed on the first partition 11, and water flowing through the wet film 5 reaches the first partition 11 and then enters the water storage box 10 through the through hole 4. Set up through-hole 4 on first baffle 11, can enough realize the supporting role to wet membrane 5, again can be convenient for the comdenstion water that flows through wet membrane 5 collect on first baffle 11 after, collect into in the water storage box 10 from through-hole 4, be convenient for carry out the collection and the reuse of comdenstion water.
In one embodiment, a second partition plate 12 is disposed in the frame 1, the second partition plate 12 divides the installation space in the frame 1 into an upper part and a lower part, two wet films 5 are disposed in one of the installation spaces, through holes 4 penetrating up and down are disposed on the second partition plate 12, and the through holes 4 are uniformly distributed on the second partition plate 12.
In the present embodiment, the installation space in the frame 1 is layered by the second partition plate 12, so that the entire height of the wet film 5 is reduced, the difficulty in attaching and detaching the wet film 5 is reduced, the wet film 5 is more easily cleaned or replaced, and the condensed water can be re-distributed by the through holes 4 of the second partition plate 12, thereby further improving the utilization efficiency of the condensed water.
In other embodiments, the number of the wet film 5 may be three or more.
In one embodiment, an air passing channel 13 is formed in the side wall of the frame 1 on the air outlet side of the wet film 5, and air guiding blades 14 are arranged at the air passing channel 13, and the air guiding blades 14 can open or close the air passing channel 13. In this embodiment, through air duct 13 and air guide vane 14, air duct 13 can communicate the space outside the air outlet side and the side wall of the wet film of frame 1, and when air does not need to be humidified, air guide vane 14 can be used to open air duct 13, so that air can be simultaneously fed into wet film 5 and air duct 13, and therefore the resistance of the wet film to the air is reduced, and the air inlet amount is ensured.
In one embodiment, the wind-guiding blades 14 are hinged on the side of the wind passage 13 remote from the wet film 5 and open to the outside.
In one embodiment, the air guide vanes 14 are hinged to the side of the air passage 13 close to the wet film 5 and open to the inside.
In both of the above two embodiments, when the air guide vane 14 is opened, the air guide direction of the air guide vane 14 to the air flow is the same as the flowing direction of the air flow flowing through the wet film 5, so that the air guide efficiency of the air flow is improved, and the air flow rate is ensured.
The air guide vanes 14 on each side can be a whole air guide plate or a combination of a plurality of air guide plates, and the air passage 13 is an integral rectangular passage or a plurality of ventilation holes.
In one embodiment, the air guide vanes 14 are disposed on each side wall of the frame 1 on the circumferential side of the wet film 5, so that air flow can be supplemented from the periphery at the same time, the air resistance influence of the wet film 5 is further reduced, the air volume is increased, and the heat dissipation effect of the condenser is improved.
In one embodiment, when the wet film 5 is cooled by water evaporation, the air guide blades 14 are closed, and the air guide blades 14 are positioned on the same plane with the inner side wall of the frame 1 of the evaporative cooling device. When the wet film 5 is not cooled by evaporation of water, the air guide vanes 14 are opened inward and form an angle of about 60 ° with the inner wall plane of the frame 1 on which they are located.
When water enters the first water distributor 3, the water level in the first water distributor 3 slowly rises, and when the water level reaches the position of the water outlet strip seam of the first water distributor 3, water flows down along the arc surface under the action of overflow and flows onto the wet membrane 5 on the upper layer through the first water passing channel 2, and the water flows are uniformly distributed along the length direction of the wet membrane 5. The water outlet of the strip seam also avoids the problem of water scale or impurity blockage. The first water distributor 3 uniformly distributes the condensed water of the indoor unit to the wet film 5, so that the surface of the wet film 5 is uniformly distributed with water films, and the evaporation effect is optimal. The second clapboard 12 is uniformly provided with small holes of 5mm, the hole pitch is 12mm, the incompletely evaporated condensed water on the wet film 5 on the upper layer flows onto the second clapboard 12 under the action of gravity, and the water flow flows onto the wet film 5 on the lower layer to continue to evaporate and absorb heat under the further uniform action of the second clapboard 12. The first separator 11 was provided with 40 × 7mm rectangular through holes at a spacing of 12mm. The incompletely evaporated condensed water on the lower wet film 5 flows into the water storage box 10 through the rectangular through hole of the first partition 11. The water storage box 10 contains a water level switch and a water pump, when the incompletely evaporated condensed water in the water storage box 10 reaches a preset water level, the water level switch is turned on, and the water pump is started to convey water to the second water distributor 8 for evaporation circulation again.
According to the embodiment of the application, the air conditioner comprises an outdoor unit and further comprises the evaporative cooling device.
This application is owing to adopted wet film evaporative cooling mode, consequently can obviously reduce condenser air inlet temperature, reinforcing condenser radiating effect to reduce air conditioner operation energy consumption.
In one embodiment, the outdoor unit includes a casing 15, an air inlet 16 is disposed on the casing 15, an outdoor heat exchanger 17 and a fan 18 are disposed in the casing 15, the evaporative cooling device is disposed at the air inlet 16, the outdoor heat exchanger 17 is disposed corresponding to the air inlet 16, and the fan 18 is disposed on a side of the outdoor heat exchanger 17 away from the evaporative cooling device.
In the embodiment of the application, evaporative cooling device and outdoor unit are laminated, and be located the air intake department of casing 15 of outdoor unit, the indoor set comdenstion water evaporates on evaporative cooling device's wet film 5 and absorbs the air heat, evaporative cooling device's air-out temperature reduces, simultaneously evaporative cooling device wind guide vane 14 all around closes, evaporative cooling device's air-out is as the air inlet of outdoor unit, the air inlet temperature of outdoor unit reduces, improve outdoor heat exchanger 17's radiating effect, reduce air conditioner operation energy consumption. When the wet film 5 of the evaporative cooling device is not subjected to evaporative cooling, the air guide vanes 14 around the evaporative cooling device are opened to reduce the air inlet resistance. The evaporative cooling device and the outdoor unit are arranged in this order in the air flow direction, and the casing 15 of the outdoor unit includes an outdoor heat exchanger 17, a fan 18, and a compressor 19, and the fan 18 is, for example, an axial flow fan.
Referring to fig. 8 in combination, according to an embodiment of the present application, the control method of the evaporative cooling device includes: obtaining outdoor air temperature T Outer cover And relative humidity RH Outer cover (ii) a When the outdoor air temperature T Outer cover Greater than a set temperature and relative humidity RH Outer cover And when the water content is less than or equal to 70%, controlling the operation of the wet film 5, and simultaneously supplying water to the first water distributor 3, so that water flows over the first water distributor 3 to reach the wet film 5 to humidify the wet film 5.
When the wet film 5 starts to work, the air guide blades 14 are controlled to be closed.
When the outdoor air temperature Toutside is greater than the set temperature, or when the outdoor air temperature T Outer cover Less than a set temperature and relative humidity RH Outer cover Detecting a water level switch of the water storage box 10 when the water level is less than or equal to 70%; when the water level switch of the water storage box 10 is turned on, the water pump is controlled to work, and the water storage box 10 is used for supplying water to the first water distributor 3 and/or the second water distributor 8.
When the outdoor air temperature T Outer cover Above a set temperature, or when the outdoor air temperature T Outer cover Less than a set temperature and relative humidity RH Outer cover Detecting a water level switch of the water storage box 10 when the water level is less than or equal to 70%; when the water level switch of the water storage box 10 is closed, detecting whether the indoor unit generates condensed water or not; when detecting that the indoor unit generates condensed water, controlling the wet film 5 to work, supplying water to the first water distributor 3 and/or the second water distributor 8 by using the condensed water on the side of the indoor unit, and controlling the air guide vanes 14 to be closed; when detecting that the indoor unit does not produce condensed water, the control wet film 5 does not work, and the control air guide vane 14 is opened.
When the outdoor air temperature Toutside is less than the set temperature, or when the outdoor air temperature T Outer cover Greater than a set temperature and relative humidity RH Outer cover And when the air quantity is more than 70%, the air guide blades 14 are controlled to be opened, and the water pump and the wet film 5 are controlled not to work.
In order to realize the control, the evaporative cooling device further comprises a humidity detection device, a condensate water detection device and a control module, wherein the humidity detection device detects the humidityThe measuring device is arranged outdoors for detecting the outdoor air temperature T Outer cover And relative humidity RH Outer cover And the condensed water detection device is positioned at the indoor side and used for detecting whether condensed water exists or not, and the control module is connected with the driving device of the air guide blades 14 and the water pump and used for controlling the state of the air guide blades 14 and the start and stop of the water pump.
By the control method, the water spraying can be controlled by detecting the outdoor environment state, the evaporation cooling device is operated intermittently, the wet film evaporation is operated efficiently all the time, and the water consumption is reduced. Meanwhile, the air guide blades are arranged on the periphery of the frame 1 of the evaporative cooling device, and when the wet film 5 does not work, the air guide blades 14 are opened, so that the air inlet volume can be increased, and the wind resistance influence of the wet film is reduced.
According to the embodiment of the application, the new energy automobile comprises an automobile thermal management air-conditioning system, and the automobile thermal management air-conditioning system is the automobile thermal management air-conditioning system.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (20)

1. An evaporative cooling device is characterized by comprising a frame (1), wherein a first water passing channel (2) and a first water distributor (3) are arranged at the top of the frame (1), a wet film (5) is arranged in the frame (1), the wet film (5) is positioned below the first water passing channel (2), the first water distributor (3) is positioned above the first water passing channel (2), the first water distributor (3) comprises a containing cavity and an overflow groove (6), the containing cavity is used for containing water and comprises a bottom wall and a side wall; the overflow groove (6) is of a slit structure, is positioned on the convex cambered surface of the side wall of the accommodating cavity of the first water distributor (3), and has a preset distance with the bottom wall; the overflow groove (6) extends along the length of the frame (1) in the horizontal direction, and the first water passing channel (2) is arranged corresponding to the overflow groove (6); the water flow enters the containing cavity, overflows through the overflow groove (6) and then flows to the wet film (5) from the first water channel (2).
2. An evaporative cooling apparatus according to claim 1, wherein the length of the first water flow channel (2) is greater than or equal to the length of the overflow launder (6).
3. An evaporative cooling device according to claim 1, wherein the first water distributors (3) are quadrant shaped in cross-section, one cathetus of the first water distributors (3) being located at the top surface of the frame (1) and the other cathetus extending upwards perpendicular to the top surface of the frame (1).
4. An evaporative cooling device according to claim 3, wherein the overflow launder (6) is located at the top to bottom quarter to two thirds of the arc.
5. The evaporative cooling device according to claim 3, characterized in that the side walls of the first water passing channels (2) are flush with the bottom end of the arc of the first water distributor (3), or the first water passing channels (2) are located below the bottom end of the arc of the first water distributor (3).
6. An evaporative cooling apparatus according to claim 1, wherein the side of the frame (1) is provided with a mounting opening (7), and the wet film (5) is mounted into the frame (1) through the mounting opening (7).
7. The evaporative cooling device according to claim 1, wherein a second water distributor (8) and a second water passing channel (9) are further disposed on the top of the frame (1), the second water distributor (8) is located above the second water passing channel (9), the second water distributor (8) comprises a receiving cavity and an overflow trough (6), water flows into the receiving cavity, and flows from the second water passing channel (9) to the wet film (5) after overflowing through the overflow trough (6).
8. An evaporative cooling device according to claim 7, wherein a water storage box (10) is provided at the bottom of the frame (1), the water storage box (10) being connected to the receiving chamber of the second water distributor (8) by a water pump and supplying water to the receiving chamber of the second water distributor (8).
9. An evaporative cooling device as claimed in claim 8, wherein the top of the water storage box (10) is provided with a first partition (11), the first partition (11) is provided with a through hole (4), and water flowing through the wet film (5) reaches the first partition (11) and then enters the water storage box (10) through the through hole (4).
10. The evaporative cooling device according to claim 9, wherein a second partition plate (12) is provided in the frame (1), the second partition plate (12) divides the installation space in the frame (1) into an upper part and a lower part, the number of the wet films (5) is two, the wet films are respectively provided in one of the installation spaces, the second partition plate (12) is provided with through holes (4) which are vertically through, and the through holes (4) are uniformly distributed on the second partition plate (12).
11. The evaporative cooling device according to any one of claims 1 to 10, wherein an air passage (13) is opened on a side wall of the frame (1) on the air outlet side of the wet film (5), and an air guide vane (14) is arranged at the air passage (13), wherein the air guide vane (14) can open or close the air passage (13).
12. An evaporative cooling device according to claim 11, wherein the air-guiding vanes (14) are hinged to the side of the air-passing channel (13) remote from the wet film (5) and open to the outside; or the air guide blades (14) are hinged to one side of the air passing channel (13) close to the wet film (5) and are opened towards the inner side.
13. An evaporative cooling device according to claim 11, wherein the frame (1) is provided with the wind-guiding blades (14) on each side wall on the circumferential side of the wet film (5).
14. An air conditioner comprising an outdoor unit, characterized by further comprising the evaporative cooling device of any one of claims 1 to 13.
15. The air conditioner according to claim 14, wherein the outdoor unit comprises a casing (15), an air inlet (16) is formed in the casing (15), an outdoor heat exchanger (17) and a fan (18) are arranged in the casing (15), the evaporative cooling device is arranged at the air inlet (16), the outdoor heat exchanger (17) is arranged corresponding to the air inlet (16), and the fan (18) is arranged at a side of the outdoor heat exchanger (17) away from the evaporative cooling device.
16. A control method of an evaporative cooling apparatus as set forth in any one of claims 1 to 13, comprising:
acquiring the outdoor air temperature and the relative humidity;
when the outdoor air temperature is higher than the set temperature and the relative humidity is lower than or equal to 70%, the wet film (5) is controlled to work, and meanwhile water is supplied to the first water distributor (3), so that water overflows from the first water distributor (3) to the wet film (5), and the wet film (5) is humidified.
17. Control method according to claim 16, characterized in that the closing of the air guiding vanes (14) is controlled when the wet film (5) starts to work.
18. The control method according to claim 16, characterized by detecting a water level switch of the water storage box (10) when the outdoor air temperature is greater than the set temperature, or when the outdoor air temperature is less than the set temperature and the relative humidity is less than or equal to 70%;
when a water level switch of the water storage box (10) is turned on, the water pump is controlled to work, and the water storage box (10) is utilized to supply water to the first water distributor (3) and/or the second water distributor (8).
19. The control method according to claim 16, characterized in that when the outdoor air temperature is higher than the set temperature, or when the outdoor air temperature is lower than the set temperature and the relative humidity is less than or equal to 70%, a water level switch of the water storage box (10) is detected;
when a water level switch of the water storage box (10) is closed, detecting whether the indoor unit generates condensed water or not;
when detecting that the indoor unit generates condensed water, controlling the wet film (5) to work, supplying water to the first water distributor (3) and/or the second water distributor (8) by using the condensed water on the side of the indoor unit, and controlling the air guide blades (14) to be closed;
when detecting that the indoor unit does not produce condensed water, the control wet film (5) does not work, and the control air guide blade (14) is opened.
20. The control method according to claim 16, wherein when the outdoor air temperature is lower than the set temperature, or when the outdoor air temperature is higher than the set temperature and the relative humidity is higher than 70%, the air guide vane (14) is controlled to be opened, and the water pump and the wet film (5) are controlled not to be operated.
CN202111462138.XA 2021-12-02 2021-12-02 Evaporative cooling device, control method thereof and air conditioner Active CN114151873B (en)

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CN111912028A (en) * 2020-08-14 2020-11-10 珠海格力电器股份有限公司 Heat exchanger assembly and air conditioning system with same
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CN105910186A (en) * 2016-04-26 2016-08-31 海信（山东）空调有限公司 Cooling system for air conditioner and air conditioner
CN207035445U (en) * 2017-08-10 2018-02-23 安徽建筑大学 A kind of overflow-type split-type air conditioner condensed water heat reclamation device
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CN111912028A (en) * 2020-08-14 2020-11-10 珠海格力电器股份有限公司 Heat exchanger assembly and air conditioning system with same
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