CN112857083A - Novel fountain evaporative cooling heat exchanger - Google Patents
Novel fountain evaporative cooling heat exchanger Download PDFInfo
- Publication number
- CN112857083A CN112857083A CN202110334111.6A CN202110334111A CN112857083A CN 112857083 A CN112857083 A CN 112857083A CN 202110334111 A CN202110334111 A CN 202110334111A CN 112857083 A CN112857083 A CN 112857083A
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- Prior art keywords
- heat exchanger
- filler
- fan
- placing area
- area
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- 238000001816 cooling Methods 0.000 title claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 72
- 239000007921 spray Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 21
- 239000000498 cooling water Substances 0.000 description 23
- 230000004087 circulation Effects 0.000 description 17
- 239000003507 refrigerant Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/10—Arrangements for suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
A novel spray type evaporative cooling heat exchanger comprises a shell, a left heat exchanger, a right heat exchanger, left filler, right filler, a partition plate, a spray device, a fan placing area, a fan, a water collecting tank and a spray pump; the spraying device is arranged at the top of the shell; the left filler and the right filler are symmetrically arranged below the spraying device; a fan placing area is arranged between the left filler and the right filler; the left heat exchanger and the right heat exchanger are respectively and symmetrically arranged below the left filler and the right filler; a partition plate is arranged between the left heat exchanger and the left filler; and a partition plate is arranged between the right heat exchanger and the right filler, and the fan is arranged in a fan placing area.
Description
Technical Field
The application relates to the technical field of heat exchange and refrigeration, in particular to a novel spray type evaporative cooling heat exchanger.
Background
With the continuous improvement of the living standard and legal consciousness of people, the requirement for environmental noise is provided. The noise source of the existing evaporative cooling heat exchanger is mainly wind noise generated when a fan runs, and the currently adopted noise reduction technology mainly comprises two methods of controlling noise from a sound source and reducing noise from a noise transmission path. Noise is controlled from a sound source, direct sound (a noise source) of the evaporative cooling heat exchanger body can be directly reduced mainly by controlling the sound source, improving the process, modifying the mechanical structure, improving the precision and the like, so that control measures in a propagation path can be simplified, and relatively, the noise reduction mode has higher cost and relatively higher difficulty in technical attack and failure. The noise is reduced from the noise transmission way, various materials with good sound wave reflection performance are used for cutting off the path of sound wave transmitted outwards, the sound absorption coefficient is improved, the sound absorption quantity is increased, the reverberation is reduced, the noise can be effectively reduced, the noise is reduced from the conventional noise transmission way, the periphery of the evaporative cooling heat exchanger area is mostly adopted to establish a sound insulation wall, the method can achieve the effect of reducing the noise, but the noise reduction method is high in cost, influences exist on the circulating air inlet of the evaporative cooling heat exchanger and the air heat dissipation of the evaporative cooling heat exchanger, and the method cannot be popularized and implemented. In view of this, it is important to design and manufacture a novel spray-type evaporative cooling heat exchanger, and a quiet and comfortable environment for people.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a novel spray type evaporative cooling heat exchanger, wherein the noise is blocked from the transmission path of the noise by the design of the internal filler and the position of a fan of the evaporative cooling heat exchanger.
In order to achieve the purpose, the technical scheme of the invention is as follows: a low-noise spray-type evaporative cooling heat exchanger comprises a shell, a left heat exchanger, a right heat exchanger, left filler, right filler, a partition plate, a spray device, a fan placing area, a fan, a water collecting tank and a spray pump; the spraying device is arranged at the top of the shell; the left filler and the right filler are symmetrically arranged below the spraying device; a fan placing area is arranged between the left filler and the right filler; the left heat exchanger and the right heat exchanger are respectively and symmetrically arranged below the left filler and the right filler; a fan placing area is arranged between the left heat exchanger and the right heat exchanger, and the left heat exchanger and the right heat exchanger are symmetrical relative to the fan placing area; a partition plate is arranged between the left heat exchanger and the left filler; a partition plate is arranged between the right heat exchanger and the right filler;
the fan is arranged in the fan placing area; the water collecting tank is positioned at the bottom of the shell; the input end of the spray pump is connected with the water outlet at the bottom of the water collecting tank through a pipeline, and the output end of the spray pump is connected with the spray device through a pipeline.
Furthermore, the positions of the left filler and the right filler and the positions of the left heat exchanger and the right heat exchanger are exchanged up and down; namely, the left side of the fan placing area is sequentially provided with a left heat exchanger, a partition plate and a left filler from top to bottom, and the right side of the fan placing area is sequentially provided with a right heat exchanger, a partition plate and a right filler from top to bottom.
Furthermore, the fan placing area is a high-pressure air area on the upper part of the fan, and a low-pressure air area on the lower part of the fan placing area; the high-pressure air area of the fan placing area is communicated with the outside of the shell through the left filler and the right filler; and the low-pressure air area of the fan placing area is communicated with the outside of the shell through the left heat exchanger and the right heat exchanger.
Furthermore, a water replenishing ball float valve is arranged in the water collecting tank.
Further, the left heat exchanger and the right heat exchanger are coil heat exchangers or microchannel heat exchangers; the refrigeration working medium inlets of the left heat exchanger and the right heat exchanger are connected in parallel and then communicated with an external refrigeration working medium inlet; and the refrigeration working medium outlets of the left heat exchanger and the right heat exchanger are connected in parallel and then communicated with an external refrigeration working medium outlet.
Furthermore, the clapboard is provided with a gap for allowing circulating water to pass through.
Compared with the prior art, the invention has the following advantages: through the design of the internal filler of the evaporative cooling heat exchanger and the position of the fan, the noise is blocked from the transmission path of the noise, and the efficient work of the evaporative cooling heat exchanger can be ensured under the condition of effectively reducing the noise.
Drawings
Fig. 1 is a first structural schematic diagram of the novel spray-type evaporative cooling heat exchanger of the invention.
Fig. 2 is a second structural schematic diagram of the novel spray-type evaporative cooling heat exchanger of the invention.
In the figure: 1. a housing; 21. A left filler; 22. right filler; 31. A left heat exchanger; 32. a right heat exchanger; 4. a partition plate; 5. a spraying device; 6. a fan placement area; 7. a fan; 8. a water collecting tank; 9. a spray pump; 10. and a water replenishing ball float valve.
Detailed Description
The present invention is further illustrated by the following examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing examples or some of the technical features can be replaced. 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.
In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships conventionally put on the products of the present invention when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and therefore, should not be construed as limiting the present invention
Detailed description of the invention
Referring to fig. 1, the novel spray-type evaporative cooling heat exchanger of the present invention includes a housing 1, a left filler 21, a right filler 22, a left heat exchanger 31, a right heat exchanger 32, a partition plate 4, a spray device 5, a fan placement area 6, a fan 7, a water collection tank 8, a spray pump 9, and a water-replenishing ball float valve 10; the spraying device 5 is arranged at the top of the shell 1; the left filler 21 and the right filler 22 are symmetrically arranged below the spraying device 5; the fan placing area 6 is arranged between the left filler 21 and the right filler 22; the left heat exchanger 31 and the right heat exchanger 32 are respectively and symmetrically arranged below the left filler 21 and the right filler 22; a fan placing area 6 is arranged between the left heat exchanger 31 and the right heat exchanger 32, and the left heat exchanger 31 and the right heat exchanger 32 are symmetrical relative to the fan placing area 6; a partition plate 4 is arranged between the left heat exchanger 31 and the left filler 21; a partition plate 4 is arranged between the right heat exchanger 32 and the right packing 22.
The partition plate 4 is provided with a gap through which water can pass, and the gap can allow cold cooling water flowing down from a filler at the upper part of the partition plate to pass through the partition plate 4 and enter the heat exchanger to exchange heat with a refrigeration working medium in the heat exchanger; at this time, the cooling water fills the gap in the partition plate 4, so that the wind at the upper portion of the partition plate 4 cannot pass through the partition plate 4 to enter the lower portion.
The fan 7 is arranged in the fan placing area 6, a high-pressure air area at the upper part of the fan 7 and a low-pressure air area at the lower part of the fan 7; the high-pressure air area of the fan placing area 6 is communicated with the outside of the shell 1 through the left filler 21 and the right filler 22; and the low-pressure air area of the fan placing area 6 is communicated with the outside of the shell 1 through the left heat exchanger 31 and the right heat exchanger 32.
The water collecting tank 8 is positioned at the bottom of the shell 1; the input end of the spray pump 9 is connected with the water outlet at the bottom of the water collecting tank 8 through a pipeline, and the output end of the spray pump is connected with the spray device 5 through a pipeline; and a water replenishing ball float valve 10 is arranged in the water collecting tank 8.
The left heat exchanger 31 and the right heat exchanger 32 are coil heat exchangers or microchannel heat exchangers; the refrigeration working medium inlets of the left heat exchanger 31 and the right heat exchanger 32 are connected in parallel and then communicated with an external refrigeration working medium inlet; the refrigeration working medium outlets of the left heat exchanger 31 and the right heat exchanger 32 are connected in parallel and then communicated with an external refrigeration working medium outlet.
The system has three circulations, namely cooling water circulation, wind circulation and refrigeration working medium circulation;
the cooling water circulation loop comprises: the spray pump 9 pumps the hot cooling water in the water collecting tank 8 and sends the hot cooling water into the spray device 5, the hot cooling water sprayed by the spray device 5 is firstly sprayed on the left filler 21 and the right filler 22 for heat dissipation and cooling, the cooled cold cooling water flows to the left heat exchanger 31 and the right heat exchanger 32 through the partition plates 4 respectively and exchanges heat with the internal refrigerating working medium, the cold cooling water absorbs heat and becomes hot cooling water, then flows into the water collecting tank 8 and enters the spray device 5 again under the suction effect of the spray pump 9 to carry out next circulation. The circulation is repeated in such a way, so that the cooling water circulation is completed;
a wind circulation loop: the fan 7 is started, air carries out first heat exchange with high-temperature gaseous refrigerant inside the heat exchanger and spray water outside the heat exchanger through the left heat exchanger 31 and the right heat exchanger 32 respectively, then enters a low-pressure air area at the lower part of the fan 7, then enters a high-pressure air area at the upper part of the fan 7 under the action of the fan 7, the air carries out second heat exchange with water flow through the left filler 21 and the right filler 22 respectively at the high-pressure area, and finally hot air is discharged to the outside of the shell 1; in the two circulations, water flow naturally falls down by gravity and flows through the filler, and air horizontally passes through the filler or the heat exchanger to meet the water flow at a right angle;
and (3) circulation of a refrigeration working medium: high-temperature high-pressure gaseous refrigerant enters the condenser 11 through the refrigerant inlet and respectively enters the left heat exchanger 31 and the right heat exchanger 32, exchanges heat with air and low-temperature cooling water and is cooled into liquid refrigerant, and the liquid refrigerant is conveyed out through the refrigeration wage outlets of the left heat exchanger 31 and the right heat exchanger 32, so that the refrigeration refrigerant cycle is completed.
And the inner walls of the shell 1 are all provided with silencing materials.
Detailed description of the invention
Referring to fig. 2, compared with the first embodiment, the positions of the left packing 21 and the right packing 22 and the left heat exchanger 31 and the right heat exchanger 32 are reversed; the left heat exchanger 31 and the right heat exchanger 32 are symmetrically arranged below the spraying device 5; the left filler 21 and the right filler 22 are symmetrically arranged below the left heat exchanger 31 and the right heat exchanger 32 respectively; namely, the left side of the fan placement area 6 is sequentially provided with a left heat exchanger 31, a partition plate 4 and a left filler 21 from top to bottom, and the right side of the fan placement area 6 is sequentially provided with a right heat exchanger 32, a partition plate 4 and a right filler 22 from top to bottom; the rest of the process is the same as the first embodiment, and the working method is also the same.
In this embodiment, the system has three cycles, namely cooling water cycle, wind cycle and refrigerant cycle.
The cooling water circulation loop comprises: the spray pump 9 extracts cold cooling water in the water collecting tank 8 and sends the cold cooling water into the spray device 5, the cold cooling water sprayed by the spray device 5 is directly sprayed on the left heat exchanger 31 and the right heat exchanger 32 to exchange heat with a refrigerating working medium in the left heat exchanger and the right heat exchanger, the cold cooling water absorbs heat and becomes hot cooling water to dissipate heat and cool, the cooled cold cooling water flows through the partition plate 4 to the left filler 21 and the right filler 22 respectively to dissipate heat and cool, the cooled cold cooling water flows into the water collecting tank 8 and enters the spray device 5 to circulate next time under the suction action of the spray pump 9. The circulation is repeated in this way, and the cooling water circulation is completed.
A wind circulation loop: the fan 7 is started, air carries out primary heat exchange with water flow through the left filler 21 and the right filler 22 respectively, then enters a low-pressure air area at the lower part of the fan 7, then enters a high-pressure air area at the upper part of the fan 7 under the action of the fan 7, the air carries out secondary heat exchange with high-temperature gaseous refrigerant inside the heat exchanger and spray water outside the heat exchanger through the left heat exchanger 31 and the right heat exchanger 32 respectively at the high-pressure area, and finally the hot air is discharged to the outside of the shell 1; in the above two circulations, the water flow naturally falls down by gravity and flows through the packing, and the air horizontally passes through the packing or the heat exchanger and meets the water flow at a right angle.
And (3) circulation of a refrigeration working medium: high-temperature high-pressure gaseous refrigerant enters the condenser 11 through the refrigerant inlet and respectively enters the left heat exchanger 31 and the right heat exchanger 32, exchanges heat with air and low-temperature cooling water and is cooled into liquid refrigerant, and the liquid refrigerant is conveyed out through the refrigeration wage outlets of the left heat exchanger 31 and the right heat exchanger 32, so that the refrigeration refrigerant cycle is completed.
It should be noted that, for the sake of simplicity, the foregoing embodiments are all expressed as components or component combinations, but those skilled in the art should understand that the present application is not limited by the names of the described components, because according to the present application, some components can achieve the functions of the corresponding components described above and are within the protection scope of the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are preferred embodiments and that the components referred to are not necessarily required for the application.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (6)
1. A novel spray-type evaporative cooling heat exchanger is characterized by comprising a shell, a left heat exchanger, a right heat exchanger, left filler, right filler, a partition plate, a spray device, a fan placing area, a fan, a water collecting tank and a spray pump; the spraying device is arranged at the top of the shell; the left filler and the right filler are symmetrically arranged below the spraying device; a fan placing area is arranged between the left filler and the right filler; the left heat exchanger and the right heat exchanger are respectively and symmetrically arranged below the left filler and the right filler; a fan placing area is arranged between the left heat exchanger and the right heat exchanger, and the left heat exchanger and the right heat exchanger are symmetrical relative to the fan placing area; a partition plate is arranged between the left heat exchanger and the left filler; a partition plate is arranged between the right heat exchanger and the right filler; the fan is arranged in the fan placing area; the water collecting tank is positioned at the bottom of the shell; the input end of the spray pump is connected with the water outlet at the bottom of the water collecting tank through a pipeline, and the output end of the spray pump is connected with the spray device through a pipeline.
2. The novel spray type evaporative cooling heat exchanger as claimed in claim 1, wherein the positions of the left filler and the right filler and the positions of the left heat exchanger and the right heat exchanger are reversed up and down; namely, the left side of the fan placing area is sequentially provided with a left heat exchanger, a partition plate and a left filler from top to bottom, and the right side of the fan placing area is sequentially provided with a right heat exchanger, a partition plate and a right filler from top to bottom.
3. The novel spray type evaporative cooling heat exchanger as claimed in claim 1, wherein the fan placement area is a high pressure air area at the upper part of the fan, and a low pressure air area at the lower part of the fan placement area; the high-pressure air area of the fan placing area is communicated with the outside of the shell through the left filler and the right filler; and the low-pressure air area of the fan placing area is communicated with the outside of the shell through the left heat exchanger and the right heat exchanger.
4. The novel spray evaporative cooling heat exchanger of claim 1, wherein a water replenishing ball float valve is provided in the water collecting tank.
5. The novel spray evaporative cooling heat exchanger of claim 1, wherein the left and right heat exchangers are coil heat exchangers or microchannel heat exchangers; the refrigeration working medium inlets of the left heat exchanger and the right heat exchanger are connected in parallel and then communicated with an external refrigeration working medium inlet; and the refrigeration working medium outlets of the left heat exchanger and the right heat exchanger are connected in parallel and then communicated with an external refrigeration working medium outlet.
6. The novel fountain evaporative cooling heat exchanger of claim 1, wherein the partition is provided with voids that allow circulating water to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334111.6A CN112857083A (en) | 2021-03-29 | 2021-03-29 | Novel fountain evaporative cooling heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334111.6A CN112857083A (en) | 2021-03-29 | 2021-03-29 | Novel fountain evaporative cooling heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112857083A true CN112857083A (en) | 2021-05-28 |
Family
ID=75993133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110334111.6A Pending CN112857083A (en) | 2021-03-29 | 2021-03-29 | Novel fountain evaporative cooling heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN112857083A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008159A1 (en) * | 2003-07-23 | 2005-01-27 | Chongmook Park | Nappy string fill evaporation water cooler and cooling tower. |
| CN201277817Y (en) * | 2008-09-12 | 2009-07-22 | 黄荣锋 | Plate type evaporation cooler |
| CN201285231Y (en) * | 2008-09-16 | 2009-08-05 | 黄荣锋 | Plate-type evaporative cooler |
| CN106352716A (en) * | 2015-07-20 | 2017-01-25 | 无锡海洋冷却设备仪征有限公司 | Novel square combined-flow closed cooling tower |
| CN108151551A (en) * | 2018-02-09 | 2018-06-12 | 广州览讯科技开发有限公司 | A kind of centrifugation air blast cross flow cooling tower using disjunctor water distributing tray |
| CN109764434A (en) * | 2018-08-30 | 2019-05-17 | 新疆绿色使者空气环境技术有限公司 | The cooling more warm water coolers of half forced evaporation and its air-conditioning device |
| CN215114057U (en) * | 2021-03-29 | 2021-12-10 | 北京中热信息科技有限公司 | Novel fountain evaporative cooling heat exchanger |
-
2021
- 2021-03-29 CN CN202110334111.6A patent/CN112857083A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005008159A1 (en) * | 2003-07-23 | 2005-01-27 | Chongmook Park | Nappy string fill evaporation water cooler and cooling tower. |
| CN201277817Y (en) * | 2008-09-12 | 2009-07-22 | 黄荣锋 | Plate type evaporation cooler |
| CN201285231Y (en) * | 2008-09-16 | 2009-08-05 | 黄荣锋 | Plate-type evaporative cooler |
| CN106352716A (en) * | 2015-07-20 | 2017-01-25 | 无锡海洋冷却设备仪征有限公司 | Novel square combined-flow closed cooling tower |
| CN108151551A (en) * | 2018-02-09 | 2018-06-12 | 广州览讯科技开发有限公司 | A kind of centrifugation air blast cross flow cooling tower using disjunctor water distributing tray |
| CN109764434A (en) * | 2018-08-30 | 2019-05-17 | 新疆绿色使者空气环境技术有限公司 | The cooling more warm water coolers of half forced evaporation and its air-conditioning device |
| CN215114057U (en) * | 2021-03-29 | 2021-12-10 | 北京中热信息科技有限公司 | Novel fountain evaporative cooling heat exchanger |
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