CN203857600U - Air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined - Google Patents
Air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined Download PDFInfo
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- CN203857600U CN203857600U CN201420211694.9U CN201420211694U CN203857600U CN 203857600 U CN203857600 U CN 203857600U CN 201420211694 U CN201420211694 U CN 201420211694U CN 203857600 U CN203857600 U CN 203857600U
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Abstract
The utility model discloses an air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined. The air conditioner comprises a unit shell, wherein a fresh air opening and an air supply outlet are formed in the two opposite side walls of the unit shell respectively, and a filter, a press-in type fan and a tubular countercurrent dew point indirect evaporative cooler are sequentially arranged in the unit shell in the flowing direction of fresh air after the fresh air enters the unit shell. An evaporator is arranged between the tubular countercurrent dew point indirect evaporative cooler and the air supply outlet, a condenser is arranged on the tubular countercurrent dew point indirect evaporative cooler, and the evaporator is connected with a compressor, the condenser and a throttling valve in sequence through water pipes to form a closed loop. An air return opening is formed in the top wall of the unit shell corresponding to the upper portion of the press-in type fan, and a secondary air opening is formed in the top wall of the unit shell corresponding to the upper portion of the condenser. The air conditioner operates based on combination of mechanical refrigeration and dew point indirect evaporative cooling, the requirements for air conditioning, heating and ventilating in a room all the year are met, and the air conditioner has the advantages of saving energy, and being friendly to the environment, economical, and stable in operation.
Description
Technical field
The utility model belongs to operation of air conditioning systems technical field, is specifically related to a kind of mechanical refrigeration and the cooling air conditioner of combining of dew point indirect evaporative.
Background technology
At present, AND ENERGY RESOURCES CONSUMPTION IN CHINA is larger, has occurred energy shortage in various degree.In summer, people, in order to build a nice and cool environment, need to open air-conditioning and meet indoor humiture requirement.Tradition air-conditioning uses mechanical compression refrigeration, mainly uses the cold-producing mediums such as freon, not only environment is produced to harm, and work time need to consume a large amount of electric energy.There is " power cuts to limit consumption " phenomenon in various degree, urban electricity supply pressure anxiety in many provinces China's summer.In addition, traditional air-conditioning constantly uses indoor return air, treats for a long time the easy air conditioner disease that obtains under this environment.
Evaporative Cooling Air Conditioning technology utilizes water as cold-producing medium, has energy-saving and environmental protection, health, the feature that bionical and air quality is good, and this technology is applied to some extent at industry fields such as China's weaving, machine room, subway, power plant, families.In order further to improve evaporative cooling cooling extent, develop the cooling air-conditioning technical of dew point indirect evaporative, it utilizes the difference of dry-bulb temperature and dew-point temperature as driving gesture, air themperature can be approached to dew-point temperature, ensures that air humidity content is constant simultaneously.For the cooling air-conditioning technical of dew point indirect evaporative, develop many moneys dew point indirect evaporative cooler both at home and abroad, can be divided into downflow type dew point indirect evaporative cooler, cross flow dew point indirect evaporative cooler and countercurrent dew point indirect evaporative cooler.Wherein, cross flow dew point indirect evaporative cooler is more easily realized, and heat transfer effect is good; And countercurrent dew point indirect evaporative cooler heat transfer effect is best, but be difficult for realizing.The cooling air-conditioning technical cooling of dew point indirect evaporative ability is large, but is subject to outdoor environment impact to a certain degree, and the course of work has stability scarcely.
Based on above background, tubular type adverse current dew point indirect evaporative cooler, forced blower fan, mechanical refrigeration system (evaporimeter, condenser, compressor, choke valve) are combined, a kind of cooling air conditioner with mechanical refrigeration cooperation of tubular type adverse current dew point indirect evaporative that is pressed into is proposed, can bring into play the cooling potential of evaporative cooling maximum, simultaneously auxiliary with mechanical refrigeration, ensure operation stability, there is energy-saving and environmental protection, economy, stable feature.
Utility model content
The purpose of this utility model is to provide a kind of mechanical refrigeration and dew point indirect evaporative the cooling air conditioner of combining, and the cooling and mechanical refrigeration cooperation based on dew point indirect evaporative can meet annual room conditioning, supply warm requirement of ventilating.
The technical scheme that the utility model adopts is, mechanical refrigeration and the cooling air conditioner of combining of dew point indirect evaporative, include machine unit shell, and machine unit shell is respectively arranged with fresh wind port and air outlet on relative two side;
In machine unit shell, enter rear flow direction along new wind and be disposed with filter, forced blower fan, tubular type adverse current dew point indirect evaporative cooler, between tubular type adverse current dew point indirect evaporative cooler and air outlet, be provided with evaporimeter, the top of tubular type adverse current dew point indirect evaporative cooler is provided with condenser, evaporimeter is joined successively and is formed closed-loop path by water pipe and compressor, condenser and choke valve, evaporimeter, compressor, condenser and choke valve composition mechanical refrigeration system;
On the machine unit shell roof of forced blower fan top correspondence, be provided with return air inlet, on the machine unit shell roof of condenser top correspondence, be provided with overfiren air port.
Feature of the present utility model is also,
In fresh wind port, be provided with new air-valve; In air outlet, be provided with blow valve; In return air inlet, be provided with air returning valve; In overfiren air port, be provided with secondary air-valve.
Forced blower fan adopts frequency conversion fan.
Tubular type adverse current dew point indirect evaporative cooler, include heat exchanger, along the mobile direction of primary air, the top of heat exchanger latter half is disposed with two time water grid and water-locators, top and the inlet side of water-locator are provided with baffle plate, the below of heat exchanger is provided with header tank, is provided with water circulating pump and hydrotreater in header tank, and hydrotreater and water circulating pump are connected with water-locator by feed pipe successively.
On feed pipe, be provided with valve.
In header tank, be provided with water compensating valve.
Water compensating valve adopts ball-cock assembly or magnetic valve.
Heat exchanger is made up of many horizontally disposed heat exchanger tubes, and many heat exchanger tubes are multiple lines and multiple rows and are staggered.
The cross section ovalize of heat exchanger tube, along being evenly provided with several throttle orifices on the second half section of primary air air intake direction heat exchanger tube, is wound with helix in heat exchanger tube, heat exchanger tube is outside equipped with water wetted material layer.
On two time water grids, be evenly provided with several grid apertures.
The beneficial effects of the utility model are:
(1) in air conditioner of the present utility model, dew point indirect evaporative cooler is made up of elliptic heat exchange tube, along primary air air intake direction, the heat exchanger tube second half section evenly punches, primary air can enter wet channel by aperture, becomes auxiliary air, carrys out precooling primary air, air by etc. wetly cool to sub-wet-bulb temperature, tubular type dew point indirect evaporative cooler has that resistance is little, the not susceptible to plugging feature of runner.
(2) in air conditioner of the present utility model, dew point indirect evaporative cooler, water-distributing device and water distribution grid are blocked by baffle plate, only before heat exchanger, leave the space that certain auxiliary air passes through, can realize the counter-flow heat exchange of primary air and auxiliary air in heat exchanger inside, exchange capability of heat strengthens.
(3) air conditioner of the present utility model adopts forced blower fan, and in the inner negative pressure that forms of air-conditioner housing, outdoor air enters air-conditioner housing under differential pressure action, only a blower fan need be set, and without water fender is set, has the feature of set structure compactness.
(4) air conditioner of the present utility model arranges return air inlet after fillter section, by regulating new air-valve and air returning valve, can control and regulate all-fresh air operation, or reclaim heat and the cold of a part of indoor return air, has energy-conservation feature.
(5) air conditioner of the present utility model arranges valve on the water distribution system of dew point indirect evaporative cooler, can, by closing and Open valve, realize the conversion of ventilation and refrigerating operaton pattern.Unit setting once with secondary air-valve, realize the control of cooling effectiveness to dew point indirect evaporative cooler.
(6) air conditioner of the present utility model is in cooling season, dew point indirect evaporative cooler and mechanical refrigeration are combined, in the time that dew point indirect evaporative cooler cannot meet wind pushing temperature requirement, can open mechanical refrigeration, the primary air (output air) of dew point indirect evaporative cooler is lowered the temperature again by evaporimeter; The auxiliary air (control air) of dew point indirect evaporative cooler, by condenser, is taken away heat, without the equipment such as cooling tower are set.
(7) air conditioner of the present utility model is at heating season, and after indoor return air mixes with new wind, mechanical refrigeration system is opened heating operation pattern, and primary air, through condenser, is delivered to indoor after being heated; By the auxiliary air process evaporimeter in aperture, after temperature reduces, outside discharge chamber.
(8) air conditioner of the present utility model arranges water distribution grid above tubular type dew point indirect evaporative cooler, and shower water, by grid, sprays equably at heat exchanger surface, strengthens the wet exchange capacity of heat of auxiliary air and moisture film.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model air conditioner;
Fig. 2 is the interior air inversion formula motion path schematic diagram of tubular type adverse current dew point indirect evaporative cooler in the utility model air conditioner;
Fig. 3 is the structural representation of heat exchanger in dew point indirect evaporative cooler in the utility model air conditioner;
Fig. 4 is the structural representation of two time water grids in the utility model air conditioner;
Fig. 5 is the schematic diagram of the utility model air conditioner in cooling season and heating season operational mode;
Fig. 6 is the schematic diagram of the utility model air conditioner in transition season ventilation operational mode.
In figure, A. machine unit shell, the indoor air outlet of B., the indoor return air inlet of C., D. ajutage, E. backwind tube, 1. fresh wind port, 2. filter, 3. forced blower fan, 4. valve, 5. header tank, 6. water circulating pump, 7. hydrotreater, 8. heat exchanger, 9. water compensating valve, 10. evaporimeter, 11. return air inlets, 12. feed pipes, 13. baffle plates, 14. 2 time water grids, 15. condensers, 16. overfiren air ports, 17. compressors, 18. choke valves, 19. air outlets, 20. grid apertures, 21. throttle orifices, 22. helixes, 23. water-locators.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The structure that the utility model mechanical refrigeration and dew point indirect evaporative be cooling combines air conditioner as shown in Figure 1, include machine unit shell A, machine unit shell A is respectively arranged with fresh wind port 1 and air outlet 19 on relative two side, in machine unit shell A, enter rear flow direction along new wind and be disposed with filter 2, forced blower fan 3, tubular type adverse current dew point indirect evaporative cooler, between tubular type adverse current dew point indirect evaporative cooler and air outlet 19, evaporimeter 10 is set, the top of tubular type adverse current dew point indirect evaporative cooler is provided with condenser 15, evaporimeter 10 is by water pipe and compressor 17, condenser 15 and choke valve 18 join successively and form closed-loop path, evaporimeter 10, compressor 17, condenser 15 and choke valve 18 form mechanical refrigeration system,
On the machine unit shell A roof of forced blower fan 3 top correspondences, be provided with return air inlet 11, on the machine unit shell A roof of condenser 15 top correspondences, be provided with overfiren air port 16.
In fresh wind port 1, be provided with new air-valve, in air outlet 19, be provided with blow valve, in return air inlet 11, be provided with air returning valve, in overfiren air port 16, be provided with secondary air-valve.
Forced blower fan 3 preferably adopts frequency conversion fan.
As shown in Figure 1, the structure of mechanical refrigeration system is: condenser 15 is connected with evaporimeter 10 by the first water pipe, the second water pipe respectively, on the first water pipe, be provided with compressor 17, on the second water pipe, be provided with choke valve 18, evaporimeter 10 joins successively and forms closed-loop path with compressor 17, condenser 15 and choke valve 18.
Tubular type adverse current dew point indirect evaporative cooler, as shown in Figure 1, include heat exchanger 8, along the mobile direction of primary air, the top of heat exchanger 8 latter halfs is disposed with two time water grids 14 and water-locator 23, and the top of water-locator 23 and primary air inlet side are provided with baffle plate 13, and the below of heat exchanger 8 is provided with header tank 5, in header tank 5, be provided with water circulating pump 6, hydrotreater 7 and water compensating valve 9, hydrotreater 7 and water circulating pump 6 are connected with water-locator 23 by feed pipe 12 successively.On feed pipe 12, be provided with valve 4; Water compensating valve 9 adopts ball-cock assembly or magnetic valve.
As shown in Figure 2, two time water grids 14, water-locator are all arranged in baffle plate 13.
As shown in Figures 2 and 3, heat exchanger 8 is made up of many horizontally disposed heat exchanger tubes; Many heat exchanger tubes are multiple lines and multiple rows and are staggered.The cross section ovalize of every heat exchanger tube, along primary air air intake direction, is evenly provided with several throttle orifices 21 on the second half section of every heat exchanger tube; In every heat exchanger tube, be all wound with helix 22, strengthen the disturbance of primary air, strengthen heat exchange; Every heat exchanger tube has water wetted material layer outward, makes shower water to form moisture film at tube wall face.
As shown in Figure 4, on two time water grids 14, be evenly provided with several grid apertures 20.
Shown in Fig. 5 and Fig. 6, return air inlet 11 is connected with the mouth of pipe of backwind tube E one end, and the other end of backwind tube E stretches into indoor, and is provided with indoor return air inlet C at mouth of pipe place; Air outlet 19 is connected with the mouth of pipe of ajutage D one end, and the other end of ajutage D stretches into indoor, and is provided with indoor air outlet B at mouth of pipe place.
The utility model mechanical refrigeration is combined in air conditioner with dew point indirect evaporative is cooling, and core component is forced blower fan 3, tubular type adverse current dew point indirect evaporative cooler and mechanical refrigeration system, and its effect is separately as follows:
Forced blower fan 3, can make the inner negative pressure that forms of machine unit shell A, makes outdoor new wind and indoor return air under the effect of pressure differential, is sent to machine unit shell A internal mix.
Heat exchanger 8 in tubular type adverse current dew point evaporative cooler is that oval heat exchanger tube forms by many cross sections, in heat exchanger tube, walk primary air, along staggered being evenly arranged of horizontal direction of primary air, the second half section of heat exchanger tube evenly punches, aperture has certain aperture, forms throttle orifice 21; The top of heat exchanger 8 is along setting gradually two time water grids 14, water-distributing device and baffle plate 13 with the vertical direction of primary air, baffle plate 13 separates water-locator 23 and heat exchanger 8, only leaving along the first half section of primary air air intake direction at heat exchanger 8 can be by the space of auxiliary air, object is to allow auxiliary air and primary air form countercurrent flow, strengthens exchange capability of heat; Owing to there being throttle orifice 21 on the heat exchanger tube second half section, primary air is under the effect of forced blower fan 3 pressure, a part enters into the wet channel of opposite side by throttle orifice 21, air-flow does not have Packed local operation along heat exchanger 8 forward end, formed counter-flow heat exchange with the primary air in heat exchanger tube, exchange capability of heat strengthens; Another part does not pass through the air of throttle orifice 21 along horizontal direction, continues operation forward; The helix 22 arranging in heat exchanger tube, for strengthening the disturbance of primary air, strengthens exchange capability of heat; Heat exchanger tube is done hydrophily processing outward, makes shower water to form uniform water film at the wall of heat exchanger 8.
Mechanical refrigeration system includes condenser 15, evaporimeter 10, compressor 17, the large parts of choke valve 18 4; Evaporimeter 10 is arranged at the rear of tubular type adverse current dew point indirect evaporative cooler primary air horizontal direction.In summer, primary air is after evaporimeter 10, and temperature has further obtained reduction; Condenser 15 is arranged on the top of tubular type dew point indirect evaporative cooler primary air operation vertical direction, and summer, auxiliary air passed through condenser 15, took away the heat of evaporimeter 10.Winter, the operation of mechanical refrigeration system heating mode, primary air, through evaporimeter 10 temperature rises, reaches wind pushing temperature and is sent to indoor; Auxiliary air reduces through condenser 15 temperature, is discharged from outdoor.
New air-valve and air returning valve, by regulating and opening, ratio new for controlling, return air, and whether all-fresh air moves.
Exhaust valve and blow valve, by regulating and opening, for controlling the flow-rate ratio of one/auxiliary air, control cooling texts.
Valve 4 is set, for controlling the conversion of air-conditioning and air vent mode on feed pipe 12.
The utility model mechanical refrigeration and dew point indirect evaporative be cooling, and to combine the course of work of air conditioner as follows:
During need cooling summer, as shown in Figure 5, in machine unit shell A under the effect of forced blower fan 3, new wind enters in machine unit shell A through the effect of fresh wind port 1 and new air-valve, after filter 2 filters, (indoor return air is to enter backwind tube E by indoor return air inlet C with indoor return air, in the effect of return air inlet 11 and air returning valve enters machine unit shell A) in machine unit shell A, mix, air enters in heat exchanger 8 along tubular type adverse current dew point indirect evaporative cooler horizontal direction, portion of air enters the wet channel of opposite side by throttle orifice 21, Open valve 4, feed pipe 12 sprays two time water grids 14 by the recirculated water in header tank 5 by water-locator 23, after two time water grids 14, trickle down equably on the wall of heat exchanger 8 again, carry out damp and hot exchange and take away the heat of primary air with auxiliary air, in heat exchanger 8 previous sections, enter into condenser 15 and carry out heat exchange with condenser 15, take away the heat of condenser 15, under the effect of exhaust valve outside overfiren air port 16 discharge chambers, auxiliary air and primary air form countercurrent flow, shower water falls into the header tank 5 of heat exchanger 8 belows, realizes circulation by hydrotreater 7 and water circulating pump 6, realizes moisturizing by water compensating valve 9, continued forward by the primary air of precooling, with evaporimeter 10 heat exchange, temperature is further lowered, and under the effect of blow valve, sends into ajutage D through air outlet 19, delivers to indoor by indoor air outlet B.
Heating season in the winter time, as shown in Figure 5, close the valve 4 on feed pipe 12, be not Sprayer Circulation water of water-locator 23, indoor return air enters backwind tube E through indoor return air inlet C, be delivered to the return air inlet 11 on machine unit shell A by backwind tube E, enter afterwards in machine unit shell A and mix with the new wind in machine unit shell A, form mixing air, the now heating mode of the mechanical refrigeration system in machine unit shell A operation, mixing air temperature is further raise, formation meets the hot blast of indoor requirement, hot blast enters ajutage D through air outlet 19, indoor air outlet B by ajutage D port delivers to indoor.
As shown in Figure 6, transition season, close the valve 4 on feed pipe 12, close air returning valve and secondary air-valve, open the new air-valve on machine unit shell A, new wind is in fresh wind port 1 enters machine unit shell A, after filter 2 filters, with air vent mode operation, the new wind after filtration enters ajutage D through air outlet 19, the new wind after being filtered in a large number to indoor conveying by indoor air outlet B.
Air conditioner of the present utility model based on dew point indirect evaporative cooling with mechanical refrigeration cooperation, meet annual room conditioning, for warm requirement of ventilating, there is energy-saving and environmental protection, economy, stable feature.
Claims (10)
1. mechanical refrigeration and the cooling air conditioner of combining of dew point indirect evaporative, it is characterized in that, include machine unit shell (A), described machine unit shell (A) is respectively arranged with fresh wind port (1) and air outlet (19) on relative two side;
In described machine unit shell (A), enter rear flow direction along new wind and be disposed with filter (2), forced blower fan (3), tubular type adverse current dew point indirect evaporative cooler, between described tubular type adverse current dew point indirect evaporative cooler and described air outlet (19), be provided with evaporimeter (10), the top of described tubular type adverse current dew point indirect evaporative cooler is provided with condenser (15), described evaporimeter (10) is by water pipe and compressor (17), condenser (15) and choke valve (18) join successively and form closed-loop path, evaporimeter (10), compressor (17), condenser (15) and choke valve (18) composition mechanical refrigeration system,
On machine unit shell (A) roof of described forced blower fan (3) top correspondence, be provided with return air inlet (11), on machine unit shell (A) roof of described condenser (15) top correspondence, be provided with overfiren air port (16).
2. mechanical refrigeration according to claim 1 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, described fresh wind port is provided with new air-valve in (1); Described air outlet is provided with blow valve in (19); Described return air inlet is provided with air returning valve in (11); Described overfiren air port is provided with secondary air-valve in (16).
3. mechanical refrigeration according to claim 1 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, described forced blower fan (3) adopts frequency conversion fan.
4. mechanical refrigeration according to claim 1 and the cooling air conditioner of combining of dew point indirect evaporative, it is characterized in that, described tubular type adverse current dew point indirect evaporative cooler, include heat exchanger (8), along the mobile direction of primary air, the top of described heat exchanger (8) latter half is disposed with two time water grids (14) and water-locator (23), the top of described water-locator (23) and inlet side are provided with baffle plate (13), the below of described heat exchanger (8) is provided with header tank (5), in described header tank (5), be provided with water circulating pump (6) and hydrotreater (7), described hydrotreater (7) and water circulating pump (6) are connected with described water-locator (23) by feed pipe (12) successively.
5. mechanical refrigeration according to claim 4 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, is provided with valve (4) on described feed pipe (12).
6. mechanical refrigeration according to claim 4 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, is provided with water compensating valve (9) in described header tank (5).
7. mechanical refrigeration according to claim 6 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, described water compensating valve (9) adopts ball-cock assembly or magnetic valve.
8. mechanical refrigeration according to claim 4 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, described heat exchanger (8) is made up of many horizontally disposed heat exchanger tubes, and many heat exchanger tubes are multiple lines and multiple rows and are staggered.
9. mechanical refrigeration according to claim 8 and the cooling air conditioner of combining of dew point indirect evaporative, it is characterized in that, the cross section ovalize of described heat exchanger tube, along being evenly provided with several throttle orifices (21) on the second half section of primary air air intake direction heat exchanger tube, in described heat exchanger tube, be wound with helix (22), heat exchanger tube is outside equipped with water wetted material layer.
10. mechanical refrigeration according to claim 4 and the cooling air conditioner of combining of dew point indirect evaporative, is characterized in that, on described two time water grids (14), is evenly provided with several grid apertures (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211694.9U CN203857600U (en) | 2014-04-28 | 2014-04-28 | Air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211694.9U CN203857600U (en) | 2014-04-28 | 2014-04-28 | Air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined |
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| Publication Number | Publication Date |
|---|---|
| CN203857600U true CN203857600U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211694.9U Expired - Fee Related CN203857600U (en) | 2014-04-28 | 2014-04-28 | Air conditioner with mechanical refrigeration and dew point indirect evaporative cooling combined |
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| Country | Link |
|---|---|
| CN (1) | CN203857600U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953988A (en) * | 2014-04-28 | 2014-07-30 | 西安工程大学 | Air conditioning unit combining forced ventilation, pipe type counter-current dew point indirect evaporative cooling and mechanical refrigeration |
| CN108731141A (en) * | 2018-06-15 | 2018-11-02 | 深圳沃海森科技有限公司 | Commercial floor air conditioner |
| EP3717844A4 (en) * | 2017-11-27 | 2021-07-21 | Glaciem Cooling Tech | Refrigeration system |
-
2014
- 2014-04-28 CN CN201420211694.9U patent/CN203857600U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953988A (en) * | 2014-04-28 | 2014-07-30 | 西安工程大学 | Air conditioning unit combining forced ventilation, pipe type counter-current dew point indirect evaporative cooling and mechanical refrigeration |
| CN103953988B (en) * | 2014-04-28 | 2017-01-04 | 西安工程大学 | Press-in tubular type adverse current dew point indirect evaporative cooling is combined air conditioning unit with mechanical refrigeration |
| EP3717844A4 (en) * | 2017-11-27 | 2021-07-21 | Glaciem Cooling Tech | Refrigeration system |
| CN108731141A (en) * | 2018-06-15 | 2018-11-02 | 深圳沃海森科技有限公司 | Commercial floor air conditioner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EXPY | Termination of patent right or utility model | ||
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Granted publication date: 20141001 Termination date: 20150428 |