CN209857691U - Intelligent control compact dry-wet combined evaporation type air cooler - Google Patents
Intelligent control compact dry-wet combined evaporation type air cooler Download PDFInfo
- Publication number
- CN209857691U CN209857691U CN201920598599.1U CN201920598599U CN209857691U CN 209857691 U CN209857691 U CN 209857691U CN 201920598599 U CN201920598599 U CN 201920598599U CN 209857691 U CN209857691 U CN 209857691U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- air
- tube bundle
- temperature sensor
- outer shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses an intelligent control compact type dry-wet combined evaporative air cooler, which comprises a PLC controller, a first temperature sensor and an outer shell, wherein a water collecting tank and a spray water pump are arranged at the bottom of the inner side surface of the outer shell, and an evaporation heat exchange tube bundle is arranged right above the water collecting tank; the utility model adds the PLC control system, so that the heat exchanger can adapt to changeable working conditions in the production process, and the system operation continuity and the automation degree are greatly improved; can detect ambient temperature through first temperature sensor, spray water system's setting has made things convenient for the quick heat exchange of evaporation heat exchanger tube bank, can take out hot-air fast through frequency conversion axial fan.
Description
Technical Field
The utility model relates to an air cooler technical field specifically is a compact is controlled to intelligence and is united evaporation formula air cooler futilely wet.
Background
The industrial heat exchanger is widely applied to national strut industries such as petroleum, chemical industry, electric power, metallurgy, energy sources, refrigeration, natural gas, heating ventilation, traffic and the like, and realizes heat transfer and energy recycling in the production process. It is of great importance in all process industries.
In a traditional industrial heat exchanger, water or air is mostly used as a cooling medium, and water is used as the cooling medium, so that a large amount of water resource waste is caused, and meanwhile, the pollution and even damage to a heat exchange equipment body, other equipment in a process and the environment can be caused; and adopt the air as cooling medium, make equipment structure, occupation of land huge usually, initial investment and later stage working costs also can increase by a wide margin.
In the industrial production process, the heat exchanger has large process operation flexibility, complex working conditions, easy influence of environmental temperature and wind field, and unstable working of heat exchange equipment, which leads to reduction of the safety and the economical efficiency of a system. Therefore, modern industrial heat exchangers tend to be energy-saving, environment-friendly and compact in design and manufacture so as to adapt to and improve the current situation of energy and water resource shortage, and the system is required to have higher continuity and automation degree in operation.
In the prior art, most of the air-cooled heat exchangers are adopted to force air to sweep the outer surface of a finned tube by using an axial flow fan, the cooling (condensing) heat emitted by a working medium in the heat exchange tube is taken away by the increase of the air temperature, and the air-cooled heat exchangers for performing heat exchange between the air and the working medium are mature in technology and do not consume water theoretically, but have large heat exchange area required by the heat exchangers due to small specific heat capacity of the air, and meanwhile, the air is forced to cool by using the axial flow fan, so that considerable power consumption of a motor is generated; the outer surface of a heat exchange tube of the air-cooled heat exchanger is provided with dense heat exchange fins, so that when impurities (such as dust and floccules) in the air are more, an air channel is blocked very easily, and the heat exchange performance is influenced; when the ambient temperature rises or the ambient wind is large, the heat exchange performance of the heat exchanger is also affected. The evaporative heat exchanger exchanges heat with a cooled medium by using latent heat of evaporation of water, circulating water forms a water film on the outer surface of the heat exchange tube, the water film evaporates and absorbs heat under the forced action of a fan, the cooled medium is cooled (condensed) in the heat exchange tube, and the evaporative heat exchanger is more compact in structure and smaller in power consumption of a motor compared with a traditional water-cooled heat exchanger. The heat exchange performance of the evaporative heat exchanger is related to the wet bulb temperature, so that a lower outlet temperature can be obtained in the production process. The evaporative heat exchanger utilizes the evaporation of water for heat exchange, so a certain amount of water needs to be supplemented in the production process, and in order to ensure the water quality of circulating water, pollution discharge may be performed regularly, so that compared with an air-cooled heat exchanger, the evaporative heat exchanger has huge consumption of water resources. Because circulating water is continuously concentrated, the outer surface film of the heat exchange tube cannot be scaled, generally, in order to control the scaling degree, evaporative heat exchangers are mostly applied to process systems with low working medium inlet temperature.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the existing defects and providing an intelligent control compact dry-wet combined evaporative air cooler, which integrates the advantages and disadvantages of an air-cooled heat exchanger and an evaporative cooler, optimizes and combines the system and the structure, ensures the compactness of the equipment and obtains higher heat exchange performance, simultaneously reduces the water consumption and the motor power consumption; the utility model adds the PLC control system, so that the heat exchanger can adapt to changeable working conditions in the production process, and the system operation continuity and the automation degree are greatly improved; the utility model discloses make the occasion that the heat exchanger used more extensive, the refrigerated difference in temperature is bigger, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: an intelligent control compact dry-wet combined evaporative air cooler comprises a PLC controller, a first temperature sensor and an outer shell, wherein a water collecting tank and a spray water pump are arranged at the bottom of the inner side surface of the outer shell, an evaporation heat exchange tube bundle is arranged right above the water collecting tank, heat exchange filler is arranged on the outer side surface of the evaporation heat exchange tube bundle, a fixed air inlet window is arranged in the middle of the outer side surface of the outer shell and is positioned between the evaporation heat exchange tube bundle and the water collecting tank, an air chamber is arranged at one end, far away from the heat exchange filler, in the middle of the inner side surface of the outer shell, the outer side surface of the heat exchange filler is communicated with the air chamber through a bypass air channel, an air deflector which is obliquely arranged is arranged right above the air chamber, a spray water system is arranged right above the evaporation heat exchange tube bundle, an air cooling, the upper end of the outer side surface of the outer shell is provided with a hot air outlet, one end of the outer side surface of the outer shell, which is close to the hot air outlet, is provided with a variable frequency axial flow fan, the liquid outlet of air cooling finned tube bank links to each other with the three-way valve through first external pipeline, be equipped with third temperature sensor on the first external pipeline, the liquid outlet of three-way valve links to each other with the inlet of evaporation heat transfer tube bank through the external pipeline of second, the liquid outlet of evaporation heat transfer tube bank is connected with the cryogenic liquid outlet pipe, the cryogenic liquid outlet pipe links to each other with the three-way valve through the external pipeline of third, be equipped with second temperature sensor on the cryogenic liquid outlet pipe, the input of PLC controller is connected with external power source's output electricity, the output of PLC controller is connected with frequency conversion axial fan and spray pump's input electricity respectively through control cable, the PLC controller respectively with first temperature sensor, third temperature sensor and second temperature sensor both way junction.
As a preferred technical scheme of the utility model, the one end that the lateral surface of shell body is close to fixed air inlet window is equipped with adjustable shutter.
As an optimized technical scheme of the utility model, the heat transfer packs and adopts the PVC stopping.
As a preferred technical scheme of the utility model, spray pump's inlet passes through the pipe and links to each other with the lateral surface lower extreme of header tank, and spray pump's liquid outlet links to each other through external pipeline and spray water system's inlet, and external pipeline is located the inside of shell body.
As an optimal technical scheme of the utility model, all be equipped with solenoid valve on the external pipeline of third, first external pipeline and the external pipeline of second.
As an optimal technical scheme of the utility model, the lateral surface lower extreme of header tank is equipped with the drain pipe, is equipped with automatic drain valve on the drain pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the intelligent control compact dry-wet combined evaporative air cooler integrates the advantages and the disadvantages of an air-cooled heat exchanger and an evaporative cooler, the system and the structure are optimally combined, the combined heat exchanger not only ensures the compactness of equipment, but also can obtain higher heat exchange performance, and simultaneously, the water consumption is reduced, and the power consumption of a motor is reduced; the utility model adds the PLC control system, so that the heat exchanger can adapt to changeable working conditions in the production process, and the system operation continuity and the automation degree are greatly improved; can detect ambient temperature through first temperature sensor, spray water system's setting has made things convenient for the quick heat exchange of evaporation heat exchanger tube bank, can take out hot-air fast through frequency conversion axial fan.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the outer housing;
fig. 3 is a schematic diagram of a three-way valve.
In the figure: the device comprises a main air inlet 1, a frequency conversion axial flow fan 2, an air cooling finned tube bundle 3, a flow expansion air chamber 4, an air deflector 5, a spray water system 6, an adjustable shutter 7, a bypass air duct 8, an evaporation heat exchange tube bundle 9, a heat exchange filler 10, a fixed air inlet window 11, an air chamber 12, a spray water pump 13, a water collecting tank 14, an automatic drain valve 15, a three-way valve 16, a PLC (programmable logic controller) 17, a third temperature sensor 18, a second temperature sensor 19, a first temperature sensor 20, a control cable 21, an outer shell 22, a first external pipeline 23, a second external pipeline 24 and a third external pipeline 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an intelligent control compact dry-wet combined evaporative air cooler comprises a PLC (programmable logic controller) 17, a first temperature sensor 20 and an outer shell 22, wherein the outside temperature can be detected through the first temperature sensor 20, the bottom of the inner side of the outer shell 22 is provided with a water collecting tank 14 and a spray water pump 13, an evaporation heat exchange tube bundle 9 is arranged right above the water collecting tank 14, the outer side of the evaporation heat exchange tube bundle 9 is provided with heat exchange filler 10, the middle part of the outer side of the outer shell 22 is provided with a fixed air inlet window 11, the fixed air inlet window 11 is positioned between the evaporation heat exchange tube bundle 9 and the water collecting tank 14, one end of the middle part of the inner side of the outer shell 22, which is far away from the heat exchange filler 10, the heat exchange filler 10 is made of PVC filler, the outer side of the heat exchange filler 10 is communicated with an air chamber 12 through a bypass air duct 8, an air deflector, the arrangement of the spray water system 6 facilitates the rapid heat exchange of the evaporation heat exchange tube bundle 9, the upper end of the inner side surface of the outer shell 22 is provided with an air cooling finned tube bundle 3, a flow expansion air chamber 4 is arranged between the air cooling finned tube bundle 3 and the spray water system 6, the outer side surface of the flow expansion air chamber 4 is provided with a main air inlet 1, the upper end of the outer side surface of the outer shell 22 is provided with a hot air outlet, one end of the outer side surface of the outer shell 22, which is close to the fixed air inlet window 11, is provided with an adjustable shutter 7, one end of the outer side surface of the outer shell 22, which is close to the hot air outlet, is provided with a variable frequency axial flow fan 2, hot air can be rapidly pumped out through the variable frequency axial flow fan 2, the liquid outlet of the air cooling finned tube bundle 3 is connected with the three-way valve, a liquid outlet of the evaporation heat exchange tube bundle 9 is connected with a low-temperature liquid outflow pipe, the low-temperature liquid outflow pipe is connected with a three-way valve 16 through a third external pipeline 25, a second temperature sensor 19 is arranged on the low-temperature liquid outflow pipe, an input end of a PLC 17 is electrically connected with an output end of an external power supply, an output end of the PLC 17 is electrically connected with input ends of the variable-frequency axial flow fan 2 and the spray water pump 13 through a control cable 21, the PLC 17 is respectively and bidirectionally connected with a first temperature sensor 20, a third temperature sensor 18 and a second temperature sensor 19, the PLC 17 adopts s7-200 of Siemens company, the first temperature sensor 20, the third temperature sensor 18 and the second temperature sensor 19 all adopt Pt100, the PLC 17 controls the first temperature sensor 20, the third temperature sensor 18, the second temperature sensor 19, the variable-frequency axial flow fan 2 and the spray water pump 13 to adopt a method commonly used in the prior art, the intelligent control compact dry-wet combined evaporative air cooler integrates the advantages and the disadvantages of an air-cooled heat exchanger and an evaporative cooler, optimizes and combines the system and the structure, ensures the compactness of equipment, obtains higher heat exchange performance, reduces the water consumption and reduces the power consumption of a motor; the utility model discloses an increase PLC control system, make the heat exchanger more adapt to changeable operating mode in the production process, system operation continuity and degree of automation greatly improve.
When in use: winter water cut-off mode: when the environmental temperature monitored by the first temperature sensor 20 is lower than the set value of the system and is below the temperature point for a long time, the system operates in a winter water cut-off mode, the PLC control system controls the water pump 13 to stop operating, the spray water system does not operate, and only the variable-frequency axial flow fan 2 operates; high-temperature fluid enters the air-cooling finned tube bundle 3, the adjustable shutter 7 is opened, most of cold air enters the air chamber 12 and the flow expansion air chamber 4 from the adjustable shutter 7, the cold air passes through the air-cooling finned tube bundle 3 under the forced action of the variable-frequency axial flow fan 2 to exchange heat with the high-temperature fluid, the fluid temperature required by the process is realized, the flow expansion air chamber 4 is provided with an air deflector 5, the air distribution is more uniform, the PLC system controls the three-way valve 15 to switch pipeline channels, the process fluid does not enter the evaporation heat exchange tube bundle 9 any more, the resistance drop generated by the part is reduced, and the reduction of the transmission kinetic energy consumption of the system is facilitated; when the first temperature sensor 20 monitors that the ambient temperature continues to decrease, the numerical value monitored by the second temperature sensor 19 is used as a system variable parameter, the PLC system controls the rotating speed of the variable-frequency axial flow fan 2 to control the temperature of the fluid outlet within a temperature range required by the process, the step prevents the freezing danger possibly generated by the process fluid due to the excessively low temperature, ensures the safe operation of equipment, simultaneously reduces the rotating speed of the variable-frequency axial flow fan, reduces the power consumption of a motor, and achieves the purpose of energy conservation, the PLC system controls the automatic drain valve 15 of the water collecting tank to be opened, so that accumulated water in the water collecting tank is drained completely, and the water tank 14 and the spray water pump 13 are ensured not to; the system operates in a winter water cut-off mode, low-temperature air is mainly used as a cooling medium for heat exchange, the system realizes water cut-off operation, and the water saving amount is obvious; when the environmental temperature monitored by the first temperature sensor 20 is higher than the set value of the system and is above the temperature point for a long time, the system operates in a spring, summer and autumn water-saving mode; the PLC control system controls the spray water pump 13 to operate, the spray water system works, and cooling water is uniformly sprayed on the surface of the evaporation heat exchange tube bundle 9 through the spray water system to form a water film; the adjustable shutter 7 is closed, and the PLC control system controls the operation of the variable-frequency axial flow fan 2; the PLC system controls the three-way valve 16 to switch pipeline channels, and process fluid firstly enters the air-cooling finned tube bundle 3 and then enters the evaporation heat exchange tube bundle 9; cold air enters from the main air inlet and firstly passes through the surface of the evaporation heat exchange tube bundle 9 under the forced action of the variable-frequency axial flow fan 2, and a water film on the surface of the evaporation heat exchange tube bundle 9 evaporates and absorbs heat emitted by process fluid in the tube; the cold air is in the process of isothermal humidification, the humidified air continuously passes through the air chamber 12 and the flow expansion air chamber 4 and sweeps over the air cooling finned tube bundle 3, and the heat released by fluid in the tube is taken away by air temperature rise to realize heat exchange; the temperature distribution of the air-cooling finned tube bundle 3 and the evaporation heat exchange tube bundle 9 is reduced in a step mode, namely, high-temperature fluid is subjected to partial heat exchange to be reduced to a certain temperature value, and then enters the evaporation heat exchange tube bundle 9 to continuously exchange heat to be reduced to the fluid temperature required by the process. The utility model can satisfy the heat exchange process with larger temperature difference, and effectively pre-cool the inlet process fluid through reasonable heat distribution of the tube bundle, thereby effectively avoiding the scaling sensitive area of the evaporation heat exchange tube bundle 9; in the process that the cold air passes through the evaporation heat exchange tube bundle 9 and the air cooling fin tube bundle 3, the state changes of isothermal humidification and isenthalpic dehumidification are carried out successively, and finally the relative humidity of the air discharged into the atmosphere is reduced due to heating, so that white smoke plume is hardly generated, and peripheral facilities and the environment of equipment are not influenced; the utility model discloses a multi-stage utilization of energy has been realized, simultaneously friendly to the environment, cold air has swept heat transfer filler 10 through fixed air inlet window 11, carry out the contact heat transfer with spray water, make spray water temperature reduce, spray water after the cooling passes through spray pump 13 and repeatedly sprays and continue the heat transfer on evaporation heat exchanger tube bank 9 surface, because spray water cooling makes evaporation heat exchanger tube bank 9's heat transfer performance increase, consequently, the equipment structure of this part is compacter, the system moves under spring, summer and autumn water-saving mode, the multi-stage multiple-effect utilization of air has been realized, the effectual evaporation capacity that reduces evaporation heat exchanger tube bank of thermal rational distribution, the water-saving capacity of system is showing.
The utility model can be operated conveniently, occupies little space when in use, and is convenient for installation and use; the intelligent control compact dry-wet combined evaporative air cooler integrates the advantages and the disadvantages of an air-cooled heat exchanger and an evaporative cooler, the system and the structure are optimally combined, the combined heat exchanger not only ensures the compactness of equipment, but also can obtain higher heat exchange performance, and simultaneously, the water consumption is reduced, and the power consumption of a motor is reduced; the adjustable shutter 7 is convenient for regulating and controlling the air intake in different use environments, and improves the use convenience.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an evaporation formula air cooler is united futilely wetly to intelligence accuse compact, includes PLC controller (17), first temperature sensor (20) and shell body (22), its characterized in that: a water collecting tank (14) and a spray water pump (13) are arranged at the bottom of the inner side surface of the outer shell (22), an evaporation heat exchange tube bundle (9) is arranged right above the water collecting tank (14), heat exchange filler (10) is arranged on the outer side surface of the evaporation heat exchange tube bundle (9), a fixed air inlet window (11) is arranged in the middle of the outer side surface of the outer shell (22), the fixed air inlet window (11) is positioned between the evaporation heat exchange tube bundle (9) and the water collecting tank (14), an air chamber (12) is arranged at one end, far away from the heat exchange filler (10), of the middle of the inner side surface of the outer shell (22), the outer side surface of the heat exchange filler (10) is communicated with the air chamber (12) through a bypass air duct (8), an air deflector (5) which is obliquely arranged right above the air chamber (12), a spray water system (6) is arranged, a flow expansion air chamber (4) is arranged between the air cooling finned tube bundle (3) and the spraying water system (6), a main air inlet (1) is arranged on the outer side surface of the flow expansion air chamber (4), a hot air outlet is arranged at the upper end of the outer side surface of the outer shell (22), a variable frequency axial flow fan (2) is arranged at one end, close to the hot air outlet, of the outer side surface of the outer shell (22), a liquid outlet of the air cooling finned tube bundle (3) is connected with a three-way valve (16) through a first external pipeline (23), a third temperature sensor (18) is arranged on the first external pipeline (23), a liquid outlet of the three-way valve (16) is connected with a liquid inlet of an evaporation heat exchange tube bundle (9) through a second external pipeline (24), a low-temperature liquid outlet of the evaporation heat exchange tube bundle (9) is connected with a low-temperature liquid outlet pipe, the low-temperature liquid outlet pipe is connected, the input end of a PLC (17) is electrically connected with the output end of an external power supply, the output end of the PLC (17) is electrically connected with the input ends of the variable-frequency axial flow fan (2) and the spray water pump (13) through a control cable (21), and the PLC (17) is respectively in two-way connection with a first temperature sensor (20), a third temperature sensor (18) and a second temperature sensor (19).
2. The intelligent control compact dry-wet combined evaporative air cooler as claimed in claim 1, wherein: an adjustable shutter (7) is arranged at one end, close to the fixed air inlet window (11), of the outer side face of the outer shell (22).
3. The intelligent control compact dry-wet combined evaporative air cooler as claimed in claim 1, wherein: the heat exchange filler (10) is made of PVC filler.
4. The intelligent control compact dry-wet combined evaporative air cooler as claimed in claim 1, wherein: the liquid inlet of the spray water pump (13) is connected with the lower end of the outer side surface of the water collecting tank (14) through a guide pipe, the liquid outlet of the spray water pump (13) is connected with the liquid inlet of the spray water system (6) through a circulating pipe, and the circulating pipe is arranged inside the outer shell (22).
5. The intelligent control compact dry-wet combined evaporative air cooler as claimed in claim 1, wherein: and electromagnetic valves are arranged on the third external pipeline (25), the first external pipeline (23) and the second external pipeline (24).
6. The intelligent control compact dry-wet combined evaporative air cooler as claimed in claim 1, wherein: the lower end of the outer side surface of the water collecting tank (14) is provided with a drain pipe, and an automatic drain valve (15) is arranged on the drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598599.1U CN209857691U (en) | 2019-04-28 | 2019-04-28 | Intelligent control compact dry-wet combined evaporation type air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598599.1U CN209857691U (en) | 2019-04-28 | 2019-04-28 | Intelligent control compact dry-wet combined evaporation type air cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209857691U true CN209857691U (en) | 2019-12-27 |
Family
ID=68939618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920598599.1U Withdrawn - After Issue CN209857691U (en) | 2019-04-28 | 2019-04-28 | Intelligent control compact dry-wet combined evaporation type air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209857691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990625A (en) * | 2019-04-28 | 2019-07-09 | 洛阳鼎瑞节能科技有限公司 | A kind of intelligence control compact dry and wet joint evaporating air cooler |
-
2019
- 2019-04-28 CN CN201920598599.1U patent/CN209857691U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990625A (en) * | 2019-04-28 | 2019-07-09 | 洛阳鼎瑞节能科技有限公司 | A kind of intelligence control compact dry and wet joint evaporating air cooler |
| CN109990625B (en) * | 2019-04-28 | 2023-10-27 | 洛阳鼎瑞节能科技有限公司 | Intelligent control compact dry-wet combined evaporation type air cooler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108105898B (en) | Adiabatic closed cooling system for data center and cooling method thereof | |
| CN103353242B (en) | Temperature-controllable dry and wet-open and closed integrated cooling tower system | |
| CN102654298B (en) | Intelligent enthalpy difference control energy-saving air conditioner and control method thereof | |
| CN109990625B (en) | Intelligent control compact dry-wet combined evaporation type air cooler | |
| CN104771918B (en) | A kind of cold concentration systems based on wet evaporation | |
| CN203672184U (en) | Heat pump heat-supply mist-removal water-saving type cooling tower | |
| CN203479060U (en) | Temperature-controllable dry and wet-opening and closing integrated type cooling tower system | |
| CN103900184A (en) | Water cooling medium three-pipe refrigerating and heating air-conditioning system | |
| CN211792609U (en) | Indirect evaporative cooling air conditioning unit for data center | |
| CN201407781Y (en) | Central air-conditioning waste heat recovery system utilizing dual-conversion thermostatic control technology | |
| CN203518319U (en) | Refrigerating air conditioner system for recycling waste heat | |
| CN201396872Y (en) | Energy-saving full-automatic cold and hot water central air conditioner system | |
| CN111295084A (en) | Indirect evaporative cooling air conditioning unit using condenser and evaporator | |
| CN209857691U (en) | Intelligent control compact dry-wet combined evaporation type air cooler | |
| CN203671820U (en) | Air source integrated central air conditioner | |
| CN211060289U (en) | Solution dehumidification dew point type evaporative cooling refrigerating system driven by waste heat of air compressor | |
| CN108444152B (en) | Full-efficiency combined air source heat pump system | |
| CN111207570A (en) | Energy-saving heat pump drying system and control method thereof | |
| CN215637696U (en) | Air-cooled heat pump air conditioning unit condenser re-cooling system | |
| CN214469042U (en) | Indirect evaporative cooling device capable of preventing condensation and frosting | |
| CN209944575U (en) | Condensing and heat exchanging system of outdoor unit of air conditioner | |
| CN209763405U (en) | Direct evaporative cooling and mechanical refrigeration combined air conditioning unit | |
| CN113710076A (en) | Flexible direct current transmission converter valve cooling system | |
| CN206522889U (en) | Binary integrated combined-type refrigerated air-conditioning system | |
| CN111412702A (en) | Wind energy effect-improving and defrosting device and method for air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191227 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191227 Effective date of abandoning: 20231027 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |