CN207035370U - The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner - Google Patents

The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner Download PDF

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Publication number
CN207035370U
CN207035370U CN201720353992.5U CN201720353992U CN207035370U CN 207035370 U CN207035370 U CN 207035370U CN 201720353992 U CN201720353992 U CN 201720353992U CN 207035370 U CN207035370 U CN 207035370U
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China
Prior art keywords
air
coil pipe
pipe
cooler
water
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Expired - Fee Related
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CN201720353992.5U
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Chinese (zh)
Inventor
黄翔
贾曼
杨立然
褚俊杰
杜生生
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Xian Polytechnic University
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Xian Polytechnic University
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Expired - Fee Related legal-status Critical Current
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Abstract

The indirect harl direct evaporating-cooling of coil pipe disclosed in the utility model and mechanical refrigeration associative form air conditioner, including machine unit shell, the auxiliary air runner and primary air runner being distributed up and down are separated into machine unit shell;Auxiliary air runner:The relative two side of machine unit shell is provided with auxiliary air air inlet, exhaust outlet, has coil pipe high temperature surface cooler b, direct evaporative cooler, compressor and condenser in auxiliary air runner;Primary air runner:Once air air inlet, air outlet on the relative two side of machine unit shell, there are coil pipe high temperature surface cooler a, atomising device, dash filler a, evaporator and dash filler b in primary air runner;Coil pipe high temperature surface cooler b, direct evaporative cooler, coil pipe high temperature surface cooler a and atomising device connection system;Evaporator is connected with compressor, condenser and expansion valve successively.The indirect harl direct evaporating-cooling of the utility model coil pipe can realize the reasonable adjusting to humiture of blowing with mechanical refrigeration associative form air conditioner.

Description

Coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner
Technical field
The utility model belongs to air conditioner technical field, and in particular to a kind of coil pipe indirectly-harl direct evaporating-cooling With mechanical refrigeration associative form air conditioner.
Background technology
Evaporation cooling technique is dry, the difference of wet-bulb temperature using air, by the hot and humid area between water and air come Obtain a kind of economic and environment-friendly type of cooling of cold.At present, evaporation cooling technique has been rapidly progressed and widely should With, but in fact, simple evaporative cooling air conditioning machine group is had a great influence by outdoor weather, in hot Arid Area, to warm and humid Spend that less demanding building is more with strong applicability, and humiture is required higher building and moderate amount of moisture area and The applicability in high humility area is then poor.
Although tradition machinery refrigeration modes are widely used, but with the development of society, its huge energy resource consumption and to ring Negative effect makes such refrigeration modes face transition and upgrade caused by border, and it is combined with evaporation cooling technique, not only may be used To make up simple the defects of using evaporation cooling technique, while also contribute to improve the problem of tradition machinery refrigeration modes are present; However, to cool down air-conditioning equipment form compound with mechanical refrigeration still less for existing evaporation, and structure and performance all need into One step is improved and optimization, could meet different application demands.
Utility model content
The purpose of this utility model be to provide a kind of coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form Air conditioner, by coil pipe indirectly-harl direct evaporating-cooling system combines with mechanical refrigeration system, can not only make primary air with Estimated secondary air temperature is reduced to below the wet-bulb temperature of its air intake, moreover it is possible to mode of operation switched over by Valve controlling, from And realize the reasonable adjusting to humiture of blowing.
The utility model the technical scheme adopted is that coil pipe indirectly-harl direct evaporating-cooling combines with mechanical refrigeration Type air conditioner, include machine unit shell, be separated into machine unit shell in the auxiliary air runner and primary air flows being distributed up and down Road;Auxiliary air runner:Auxiliary air air inlet, exhaust outlet, secondary sky are respectively arranged with the relative two side of machine unit shell In flow channel by air into rear flow direction be disposed with coil pipe high temperature surface cooler b, direct evaporative cooler, compressor and Condenser;Primary air runner:It is respectively arranged with primary air air inlet, air outlet on the relative two side of machine unit shell, one In secondary air flow channel by air into rear flow direction be disposed with coil pipe high temperature surface cooler a, atomising device, dash filler a, Evaporator and dash filler b;Coil pipe high temperature surface cooler b, direct evaporative cooler, coil pipe high temperature surface cooler a and atomising device lead to Cross grid connect and compose coil pipe indirectly-harl direct evaporating-cooling system;Evaporator by pipeline successively with compressor, condensation Device and expansion valve connect and compose closed-loop path, form mechanical refrigeration system;In auxiliary air air inlet and primary air air inlet It is provided with blinds.
Main feature of the present utility model also resides in:
Auxiliary air air inlet is provided with air cleaner b in auxiliary air runner;Leaned in primary air runner Nearly primary air air inlet is provided with air cleaner a.
Air cleaner a and air cleaner b uses pocket type air filter.
In auxiliary air runner exhaust blower is provided with exhaust outlet;Set in primary air runner at air outlet There is pressure fan.
Compressor is screw compressor;Expansion valve is heating power expansion valve.
Corresponding to dash filler a bottoms osculum a is provided with machine unit shell side wall;Machine corresponding to dash filler b bottoms Osculum b is provided with group housing sidewall.
The disk formed between coil pipe high temperature surface cooler b, direct evaporative cooler, coil pipe high temperature surface cooler a and atomising device Indirectly-harl direct evaporating-cooling system is managed, its structure is specific as follows:
Connected between coil pipe high temperature surface cooler b and coil pipe high temperature surface cooler a by communicating pipe a, b points of coil pipe high temperature surface cooler Be not connected by the first water pipe, the second water pipe with direct evaporative cooler, coil pipe high temperature surface cooler a pass sequentially through the 3rd water pipe, 4th water pipe is connected with atomising device;Regulating valve c, water filter and water circulating pump, water filtration are respectively arranged with second water pipe Device is connected with the 3rd water pipe, the 4th water pipe respectively by communicating pipe b;Regulating valve a is provided with 3rd water pipe, is set on the 4th water pipe It is equipped with regulating valve b.
Direct evaporative cooler, include filler and be arranged at the dash filler c at filler rear, be provided with above filler Cyclic water tank is provided with below water-locator, filler and dash filler c;Water-locator is connected with the first water pipe, cyclic water tank and Two water pipes connect.
Water supplement port and discharge outlet, and water supplement port connection filling pipe, discharge outlet connection draining are respectively arranged with cyclic water tank Pipe.
Atomising device, include multigroup atomization unit, and every group of atomization unit is connected with the 4th water pipe.
The structure of every group of atomization unit is:Include two spray being oppositely arranged standpipes, and under two spray standpipes End is connected by Correspondent pipe, the connection of the water pipes of Correspondent Guan Yu tetra-;Sprayed at every on standpipe and be evenly arranged with multiple atomizers, Atomizer on two spray standpipes relative can be sprayed, and make to form spray drop warm area between two spray standpipes.
The beneficial effects of the utility model are:
(1) the utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner in, directly The high temperature cold water that devaporizer is produced is divided into two parts use:A part of high temperature cold water is fed in the presence of water circulating pump In coil pipe high temperature surface cooler in primary air runner, for for primary air precooling, subsequently entering in auxiliary air runner In coil pipe high temperature surface cooler, for indirect evaporating-cooling wet bulb efficiency can be improved for auxiliary air precooling, such mode;It is another Part high temperature cold water can selectively feed atomising device by valve regulated, for etc. it is clammy but after primary air carry out it is straight Evaporation cooling is connect, and primary air temperature and humidity can reasonably be adjusted.
(2) the utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner in, by mist Makeup is put to be connected with coil pipe indirect evaporation cooler, and using high temperature cold water caused by direct evaporative cooler, can not only make Processed air fully contacts with harl, strengthens the ability of hot and humid area, while can also reduce unit resistance, and realizes to one The filtering and purification of secondary air, the corresponding quality for improving primary air.
(3) the utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, valve can be passed through Gate control switches over to mode of operation, realizes the reasonable adjusting to humiture of blowing, while coordinate to utilize natural cold source and people Work low-temperature receiver, the potentiality of evaporation cooling technique are given full play to, improve energy ecology, can undertaken for tradition machinery refrigeration more cold Load.
(4) the utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner can make once Air and estimated secondary air temperature are reduced to below the wet-bulb temperature of its air intake.
Brief description of the drawings
Fig. 1 be the utility model coil pipe indirectly-structure of harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner Schematic diagram.
In figure, 1. primary air air inlets, 2. air cleaner a, 3. coil pipe high temperature surface cooler a, 4. regulating valve a, 5. adjust Valve b is saved, 6. atomising devices, 7. dash filler a, 8. osculum a, 9. evaporators, 10. dash filler b, 11. osculum b, 12. send Blower fan, 13. air outlets, 14. exhaust outlets, 15. exhaust blowers, 16. expansion valves, 17. condensers, 18. compressors, 19. dash fillers C, 20. water-locators, 21. cyclic water tanks, 22. fillers, 23. water circulating pumps, 24. water filters, 25. regulating valve c, 26. air mistakes Filter b, 27. auxiliary air air inlets, 28. coil pipe high temperature surface cooler b, 29. communicating pipes a, 30. communicating pipes b, 31. Correspondent pipes.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, as shown in figure 1, Include machine unit shell, be separated into machine unit shell in the auxiliary air runner and primary air runner being distributed up and down;Secondary sky Flow channel:Auxiliary air air inlet 27, exhaust outlet 14, auxiliary air runner are respectively arranged with the relative two side of machine unit shell It is interior to be disposed with coil pipe high temperature surface cooler b28, direct evaporative cooler, compressor 18 and cold into rear flow direction by air Condenser 17;Primary air runner:Primary air air inlet 1, air outlet 13 are respectively arranged with the relative two side of machine unit shell, Coil pipe high temperature surface cooler a3, atomising device 6, dash are disposed with primary air runner into rear flow direction by air to fill out Expect a7, evaporator 9 and dash filler b10;Coil pipe high temperature surface cooler b28, direct evaporative cooler, coil pipe high temperature surface cooler a3 and Atomising device 6 by grid connect and compose coil pipe indirectly-harl direct evaporating-cooling system;Evaporator 9 is (general by pipeline For copper pipe) closed-loop path is connected and composed with compressor 18, condenser 17 and expansion valve 16 successively, form mechanical refrigeration system.
In auxiliary air runner air cleaner b26, primary air runner are provided with auxiliary air air inlet 27 Air cleaner a2 is provided with interior close primary air air inlet 1.
Air cleaner a2 and air cleaner b26 uses pocket type air filter.
In auxiliary air runner exhaust blower 15 is provided with exhaust outlet 14;Close to air outlet 13 in primary air runner Place is provided with pressure fan 12.
Blinds is provided with auxiliary air air inlet 27, primary air air inlet 1, exhaust outlet 14 and air outlet 13.
Compressor 18 is screw compressor.Expansion valve 16 is heating power expansion valve.
Corresponding to dash filler a7 bottoms osculum a8 is provided with machine unit shell side wall;Dash filler b10 bottoms are corresponding Machine unit shell side wall on be provided with osculum b11.
Formed between coil pipe high temperature surface cooler b28, direct evaporative cooler, coil pipe high temperature surface cooler a3 and atomising device 6 Coil pipe indirectly-harl direct evaporating-cooling system, its structure is specific as follows:
Connected between coil pipe high temperature surface cooler b28 and coil pipe high temperature surface cooler a3 by communicating pipe a29, coil pipe pyrometric scale is cold Device b28 is connected by the first water pipe G1, the second water pipe G2 with direct evaporative cooler respectively, and coil pipe high temperature surface cooler a3 leads to successively Cross the 3rd water pipe G3, the 4th water pipe G4 is connected with atomising device 6;Regulating valve c25, water filtration are respectively arranged with second water pipe G2 Device 24 and water circulating pump 23, water filter 24 are connected with the 3rd water pipe G3, the 4th water pipe G4 respectively by communicating pipe b30;3rd It is provided with water pipe G3 on regulating valve a4, the 4th water pipe G4 and is provided with regulating valve b5.
First water pipe G1, the second water pipe G2, the 3rd water pipe G3, the 4th water pipe G4, communicating pipe a29 and adopt communicating pipe b30 Use pvc pipe.
Direct evaporative cooler, as shown in figure 1, include filler 22 and be arranged at the dash filler c19 at the rear of filler 22, The top of filler 22 is provided with water-locator 20, and cyclic water tank 21 is provided with below filler 22 and dash filler c19;Water-locator 20 It is connected with the first water pipe G1, cyclic water tank 21 is connected with the second water pipe G2.
Filler 22 is fiber glass packing.
Water-locator 20 is made up of water distributor and multiple nozzles sprayed on water distributor and towards filler 22 that are uniformly arranged on.
Water supplement port and discharge outlet, and water supplement port connection filling pipe, discharge outlet connection are also respectively provided with cyclic water tank 21 Drainpipe.
Atomising device 6, as shown in figure 1, include multigroup atomization unit, and every group of atomization unit connects with the 4th water pipe G4 Connect.
The structure of atomization unit is:Include two spray being oppositely arranged standpipes, and the lower end of two spray standpipes leads to Cross Correspondent pipe 31 to connect, Correspondent pipe 31 is connected with the 4th water pipe G4, is sprayed at every and is evenly arranged with multiple atomization sprays on standpipe Mouth, two atomizers sprayed on standpipes relative can be sprayed, and make to form spray drop warm area between two spray standpipes.
The utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, can realize as follows Mode of operation:
(1) harl direct evaporating-cooling (DEC) operational mode:
Now, regulating valve b5 and regulating valve c25 are opened, and regulating valve a4 is closed;
The auxiliary air that auxiliary air enters in machine unit shell in the presence of exhaust blower 15 through auxiliary air air inlet 27 In runner, first it is filtered by air cleaner b26, forms the auxiliary air of cleaning;Clean auxiliary air enters disk The wet cooling such as carry out in pipe high temperature surface cooler b28, flow into equal-enthalpy humidifying cooling is carried out in direct evaporative cooler afterwards, it is during which straight Connect high temperature cold water caused by devaporizer to collect through cyclic water tank 21, the recirculated water in cyclic water tank 21 is in water circulating pump 23 In the presence of successively through the 4th water pipe G4, the 3rd water pipe G3 be sent into atomising device 6;
At the same time, primary air is sucked in machine unit shell in the presence of pressure fan 12 through primary air air inlet 1 In primary air runner, first primary air is filtered by air cleaner 2, forms the primary air of cleaning;Clean one With the harl that atomising device 6 sprays hot and humid area occurs for secondary air, completes constant enthalpy cooling, forms cold wind;The cold wind of formation is through gear Water packing a7 is sent into interior in the presence of pressure fan 12 after filtering out unnecessary moisture through air outlet 13.
(2) coil pipe indirect evaporating-cooling+harl direct evaporating-cooling (IDEC) operational mode:
Now, valve a4 and valve b5 are opened, valve c25 closings (or valve c25, valve a4 and valve b5 are opened Open, but valve c25 opened smaller, valve a4, valve b5 open larger);
The auxiliary air that auxiliary air enters in machine unit shell in the presence of exhaust blower 15 through auxiliary air air inlet 27 In runner, first it is filtered by air cleaner b26, forms the auxiliary air of cleaning;Clean auxiliary air enters disk The wet cooling such as carry out in pipe high temperature surface cooler b28, flow into equal-enthalpy humidifying cooling is carried out in direct evaporative cooler afterwards, it is during which straight High temperature cold water caused by devaporizer is connect to collect through cyclic water tank 21, and through feed pipe G2 in the presence of water circulating pump 23 It is sent into coil pipe high temperature surface cooler a3, by the clammy once sky but sucked from primary air air inlet 1 such as coil pipe high temperature surface cooler a Gas, primary air by etc. the harl that is sprayed again with atomising device 6 after wet cooling hot and humid area occurs, constant enthalpy cooling, formed cold Wind;Cold wind is sent into interior in the presence of pressure fan 12 after dash filler a7 filters out unnecessary moisture through air outlet 13.
(3) coil pipe indirect evaporating-cooling+mechanical refrigeration (IEC+DX) operational mode:
Now, valve a4 is opened, and valve b5 and valve c25 are turned off, and opens mechanical refrigeration system;
The auxiliary air that auxiliary air enters in machine unit shell in the presence of exhaust blower 15 through auxiliary air air inlet 27 In runner, first it is filtered by air cleaner b26, forms the auxiliary air of cleaning;Clean auxiliary air enters disk The wet cooling such as carry out in pipe high temperature surface cooler b28;Flow into again and equal-enthalpy humidifying cooling is carried out in direct evaporative cooler;Enter afterwards In mechanical refrigeration system, condensation heat is taken away by condenser 17, finally discharged in the presence of exhaust blower 15;Meanwhile directly evaporate High temperature cold water caused by cooler is collected through cyclic water tank 21, and is sent into the presence of water circulating pump 23 through the second water pipe G2 In coil pipe high temperature surface cooler a3, now coil pipe high temperature surface cooler a3 is used for the primary air to being sucked through primary air air inlet 1 Carry out etc. it is clammy cooling and dehumidifying is but carried out by the evaporator 9 in mechanical refrigeration system afterwards, form cold wind, last cold wind is being sent In the presence of blower fan 12 interior is sent into through air outlet 13.
The utility model coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner can make primary air It is reduced to estimated secondary air temperature below the wet-bulb temperature of its air intake, effectively improves mechanical refrigeration coefficient of refrigerating performance, while can pass through Valve controlling is operated the switching of pattern, realizes the reasonable adjusting to humiture of blowing, during which coordinate natural cold source with it is artificial The utilization of low-temperature receiver, improves energy ecology, and the ability of whole unit energy-conservation and regulation humiture is notable.

Claims (10)

1. coil pipe indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is characterised in that include unit shell Body, it is separated into the machine unit shell in the auxiliary air runner and primary air runner being distributed up and down;The secondary air streams Road:Auxiliary air air inlet (27), exhaust outlet (14) are respectively arranged with the relative two side of machine unit shell;The auxiliary air In runner coil pipe high temperature surface cooler b (28), direct evaporative cooler, compressor are disposed with by air into rear flow direction And condenser (17) (18);The primary air runner:Primary air is respectively arranged with the relative two side of machine unit shell to enter Air port (1), air outlet (13), the primary air runner is interior to be disposed with coil pipe pyrometric scale by air into rear flow direction Cooler a (3), atomising device (6), dash filler a (7), evaporator (9) and dash filler b (10);The coil pipe high temperature surface cooler B (28), direct evaporative cooler, coil pipe high temperature surface cooler a (3) and atomising device (6) are connected and composed by grid between coil pipe Connect-harl direct evaporating-cooling system;The evaporator (9) by copper pipe successively with compressor (18), condenser (17) and swollen Swollen valve (16) connects and composes closed-loop path, forms mechanical refrigeration system;The auxiliary air air inlet (27) and primary air enter Blinds is provided with air port (1).
2. coil pipe according to claim 1 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, auxiliary air air inlet (27) place is provided with air cleaner b (26) in the auxiliary air runner;Described one Primary air air inlet (1) place is provided with air cleaner a (2) in secondary air flow channel;
The air cleaner a (2) and air cleaner b (26) use pocket type air filter.
3. coil pipe according to claim 1 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, exhaust outlet (14) place is provided with exhaust blower (15) in the auxiliary air runner;In the primary air runner Air outlet (13) place is provided with pressure fan (12).
4. coil pipe according to claim 1 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is that the compressor (18) is screw compressor;The expansion valve (16) is heating power expansion valve.
5. coil pipe according to claim 1 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, osculum a (8) is provided with machine unit shell side wall corresponding to dash filler a (7) bottom;The dash filler b (10) osculum b (11) is provided with corresponding to bottom in machine unit shell side wall.
6. coil pipe according to claim 1 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, the coil pipe high temperature surface cooler b (28), direct evaporative cooler, coil pipe high temperature surface cooler a (3) and atomising device (6) Between the coil pipe that forms indirectly-harl direct evaporating-cooling system, its structure is specific as follows:
It is connected between the coil pipe high temperature surface cooler b (28) and coil pipe high temperature surface cooler a (3) by communicating pipe a (29), the disk Pipe high temperature surface cooler b (28) is connected by the first water pipe (G1), the second water pipe (G2) with the direct evaporative cooler respectively, institute State that coil pipe high temperature surface cooler a (3) passes sequentially through the 3rd water pipe (G3), the 4th water pipe (G4) is connected with atomising device (6);
Regulating valve c (25), water filter (24) and water circulating pump (23), the water are respectively arranged with second water pipe (G2) Filter (24) is connected with the 3rd water pipe (G3), the 4th water pipe (G4) respectively by communicating pipe b (30);3rd water pipe (G3) regulating valve a (4) is provided with, regulating valve b (5) is provided with the 4th water pipe (G4).
7. coil pipe according to claim 6 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, the direct evaporative cooler, includes filler (22) and is arranged at the dash filler c (19) at filler (22) rear, It is provided with water-locator (20) above the filler (22), is provided with and follows below the filler (22) and dash filler c (19) Ring water tank (21);The water-locator (20) is connected with the first water pipe (G1), and the cyclic water tank (21) connects with the second water pipe (G2) Connect.
8. coil pipe according to claim 7 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, water supplement port and discharge outlet, and water supplement port connection filling pipe are respectively arranged with the cyclic water tank (21), described Discharge outlet connects drainpipe.
9. coil pipe according to claim 6 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, it is special Sign is, the atomising device (6), includes multigroup atomization unit, and atomization unit described in every group with the 4th water pipe (G4) Connection.
10. coil pipe according to claim 9 indirectly-harl direct evaporating-cooling and mechanical refrigeration associative form air conditioner, its It is characterised by, the structure of atomization unit is described in every group:Include two spray being oppositely arranged standpipes, and two spray standpipes Lower end connected by Correspondent pipe (31), the Correspondent pipe (31) is connected with the 4th water pipe (G4);In the every spray standpipe On be evenly arranged with multiple atomizers, the atomizers on two spray standpipes can relative spraying, make two spray standpipes it Between formed spray drop warm area.
CN201720353992.5U 2017-04-06 2017-04-06 The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner Expired - Fee Related CN207035370U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720353992.5U CN207035370U (en) 2017-04-06 2017-04-06 The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720353992.5U CN207035370U (en) 2017-04-06 2017-04-06 The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner

Publications (1)

Publication Number Publication Date
CN207035370U true CN207035370U (en) 2018-02-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720353992.5U Expired - Fee Related CN207035370U (en) 2017-04-06 2017-04-06 The indirect harl direct evaporating-cooling of coil pipe and mechanical refrigeration associative form air conditioner

Country Status (1)

Country Link
CN (1) CN207035370U (en)

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Granted publication date: 20180223

Termination date: 20200406