CN205316490U - Air source duplex condition split air conditioner ware - Google Patents

Air source duplex condition split air conditioner ware Download PDF

Info

Publication number
CN205316490U
CN205316490U CN201620081129.4U CN201620081129U CN205316490U CN 205316490 U CN205316490 U CN 205316490U CN 201620081129 U CN201620081129 U CN 201620081129U CN 205316490 U CN205316490 U CN 205316490U
Authority
CN
China
Prior art keywords
air
outdoor
indoor
condenser
indoor set
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.)
Active
Application number
CN201620081129.4U
Other languages
Chinese (zh)
Inventor
崔学军
周笠
崔学儒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Energy Link (beijing) Technology Development Co Ltd
Original Assignee
Energy Link (beijing) Technology Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Energy Link (beijing) Technology Development Co Ltd filed Critical Energy Link (beijing) Technology Development Co Ltd
Priority to CN201620081129.4U priority Critical patent/CN205316490U/en
Application granted granted Critical
Publication of CN205316490U publication Critical patent/CN205316490U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to an air source duplex condition split air conditioner ware, this air source duplex condition split air conditioner ware include off -premises station and indoor set, electric refrigeration device and air isolation heat transfer device, the electric refrigeration device includes evaporimeter, condenser, condenser fan, compressor, compressor, condenser and condenser fan integration are in in the off -premises station, the evaporimeter integration is in in the indoor set, the compressor pass through the pipeline with the condenser intercommunication, the condenser pass through the circulating line with the evaporimeter intercommunication forms closed circulation, it is integrated in the indoor set that heat transfer device is kept apart to the air, keeps apart the heat transfer with room air and outdoor air. The utility model discloses because integrated in the indoor set be free air bound from heat transfer device, showing when being higher than outdoor temperature at indoor temperature, the air can be started and heat transfer device is kept apart, carry out the heat transfer to the room air through natural cold source, can reduce electric refrigeration device operating power and operating duration, reach energy -conserving purpose.

Description

A kind of air source Double-working-condition Split type air conditioner
Technical field
This utility model relates to a kind of air source Double-working-condition Split type air conditioner, belongs to field of Refrigeration and Air-conditioning.
Background technology
Server of the prior art is arranged in machine room, the overall of machine room is lowered the temperature to realize server cabinet is reached the effect of cooling by the mode all adopting electricity refrigeration, this operational mode, need to consume substantial amounts of energy machine room entirety is lowered the temperature, cause the consumption of a large amount of electric energy, it is impossible to realize the target of energy-saving and emission-reduction.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of air source Double-working-condition Split type air conditioner, overcomes and server room or other room carry out in prior art the defect that cooling can only adopt the mode of electricity refrigeration to lower the temperature.
The technical scheme that this utility model solves above-mentioned technical problem is as follows: a kind of air source Double-working-condition Split type air conditioner, including off-premises station and indoor set, electricity refrigerating plant and air insulated heat-exchanger rig, described electricity refrigerating plant includes vaporizer, condenser, condenser fan, compressor, described compressor, condenser and condenser fan are integrated in described off-premises station, described vaporizer is integrated in described indoor set, described compressor is connected with described condenser by pipeline, and described condenser connects formation closed cycle by circulating line with described vaporizer; Described air insulated heat-exchanger rig is integrated in indoor set, and room air and outdoor air carry out isolation heat exchange.
The beneficial effects of the utility model are: this utility model owing to being integrated with air insulated heat-exchanger rig in indoor set, when indoor temperature is significantly higher than outdoor temperature, air insulated heat-exchanger rig can be started, by natural cooling source, room air is carried out heat exchange, electricity refrigerating plant can be reduced and run power and operation time, reach energy-conservation purpose.
On the basis of technique scheme, this utility model can also do following improvement.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, and further, described electricity refrigerating plant also includes throttling arrangement, and described throttling arrangement is arranged on described circulating line.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, and further, described electricity refrigerating plant is two sets.
Adopt above-mentioned further scheme to provide the benefit that: a preparation and a use can be realized, or switching uses in turn.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, further, described air insulated heat-exchanger rig includes sensible heat exchanger, primary side outdoor heat exchange passage and secondary side outdoor heat exchange passage, described primary side outdoor heat exchange passage is connected with the outdoor air air inlet in described sensible heat exchanger by the outdoor air inlet on indoor set, and described secondary side outdoor heat exchange passage is connected with the outdoor air air outlet in described sensible heat exchanger by the outdoor air outlet on indoor set; Indoor air inlet in described sensible heat exchanger is corresponding respectively with indoor air outlet to be connected with the room air air inlet being provided with on indoor set and room air air outlet; Namely the indoor air inlet in described sensible heat exchanger connects with the room air air inlet being provided with on indoor set, and the indoor air outlet in described sensible heat exchanger connects with the room air air outlet being provided with on indoor set.
Above-mentioned further scheme is adopted to provide the benefit that: when indoor temperature and the outdoor temperature temperature difference are bigger, can by realizing indoor temperature is lowered the temperature to outdoor temperature and indoor temperature heat exchange by the sensible heat exchanger in indoor set, reduce electricity refrigerating operaton power or the time of operation, effectively utilize natural cooling source, it is achieved energy-conservation purpose.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, further, also include indoor circulation blower fan and/or outdoor circulating wind machine, described indoor circulation assembling is in housing or on indoor circulation air channel, and described outdoor circulating wind machine is installed on described primary side outdoor heat exchange passage and/or secondary side outdoor heat exchange passage.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, and further, described outdoor air air inlet and described room air air inlet are mounted on roughing efficiency air filter.
Adopt above-mentioned further scheme to provide the benefit that: can also air be filtered only while realizing heat exchange, reduce dust in machine room and fall in server, extend the operation time of server.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, and further, described sensible heat exchanger is have the sensible air heat exchanger of sheet metal structure.
This utility model is a kind of air source Double-working-condition Split type air conditioner as mentioned above, further, also includes PLC, and described PLC is all connected by control line with off-premises station and indoor set.
The above-mentioned indoor set of this utility model is also associated with suspension rod is installed, it is possible to indoor set is arranged on the position such as top of machine room.
The operation method of the above-mentioned a kind of above-mentioned air source Double-working-condition Split type air conditioner of this utility model, when, after startup self-detection, running in the following manner according to different operating modes:
1) when indoor arrange the temperature difference between air themperature and outside air temperature less than 3 degree, start electricity refrigerating plant, when indoor inlet temperature arrange with indoor air themperature identical time, compressor quits work;
2) when indoor arrange between temperature and outside air temperature the temperature difference more than 3 degree again less than 6 degree time, start air insulated heat-exchanger rig and electricity refrigerating plant simultaneously, when indoor inlet temperature arrange with indoor air themperature identical time, compressor quits work;
3) when indoor arrange that between temperature and outside air temperature, the temperature difference is more than 6 degree, start air insulated heat-exchanger rig and room air is carried out heat exchange; Run to when indoor arrange between temperature and outside air temperature the temperature difference more than 3 degree again less than 6 degree time, electric refrigerating plant startup work; When the temperature difference proceeding to arrange between air themperature and outside air temperature when indoor is less than 3 degree, air insulated heat-exchanger rig quits work; When indoor inlet temperature equal to or less than indoor arrange air themperature identical time, compressor quits work.
The pressure that specifically can also pass through to detect room air air intake mouth inner and outer side in said method judges whether laying dust blocks room air air inlet.
Accompanying drawing explanation
Fig. 1 is indoor machine structure principle schematic in this utility model one air source Double-working-condition Split type air conditioner;
Fig. 2 is this utility model one air source Double-working-condition Split type air conditioner structural principle schematic diagram;
Fig. 3 is this utility model one air source Double-working-condition Split type air conditioner structural representation.
In accompanying drawing, the list of parts representated by each label is as follows:
1, off-premises station, 2, indoor set, 3, vaporizer, 4, condenser, 5, compressor, 6, outdoor air air inlet, 7, circulating line, 8, sensible heat exchanger, 9, primary side outdoor heat exchange passage, 10, secondary side outdoor heat exchange passage, 11, indoor circulation blower fan, 12, outdoor circulating wind machine, 13, roughing efficiency air filter, 14, suspension rod, 15, room air air outlet, 16, room air air inlet, 17, outdoor air air outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present utility model and feature being described, example is served only for explaining this utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of air source Double-working-condition Split type air conditioner, including off-premises station 1 and indoor set 2, electricity refrigerating plant and air insulated heat-exchanger rig, described electricity refrigerating plant includes vaporizer 3, condenser 4, condenser fan, compressor 5, described compressor 5, condenser 4 and condenser fan are integrated in described off-premises station 1, described vaporizer 3 is integrated in described indoor set 2, described compressor 5 is connected with described condenser 4 by pipeline, and described condenser 4 connects formation closed cycle by circulating line 7 with described vaporizer 3; Described air insulated heat-exchanger rig is integrated in indoor set 2, and room air and outdoor air carry out isolation heat exchange. Specifically, described electricity refrigerating plant also includes throttling arrangement, and described throttling arrangement is arranged on described circulating line 7.
Specifically, described air insulated heat-exchanger rig includes the sensible heat exchanger 8 in housing, primary side outdoor heat exchange passage 9 and secondary side outdoor heat exchange passage 10, described primary side outdoor heat exchange passage 9 is connected with the outdoor air air inlet 6 in described sensible heat exchanger 8 by the outdoor air inlet on indoor set, and described secondary side outdoor heat exchange passage 10 is connected with the outdoor air air outlet 17 in described sensible heat exchanger 8 by the outdoor air outlet on indoor set; Indoor air inlet in described sensible heat exchanger is corresponding respectively with indoor air outlet to be connected with the room air air inlet 16 being provided with on indoor set and room air air outlet 15. Described housing is provided with room air air inlet and room air air outlet. In a concrete example, described outdoor air air inlet 6 place and described room air air inlet 16 place are mounted on roughing efficiency air filter 13;Described sensible heat exchanger is have the sensible air heat exchanger of sheet metal structure.
In some concrete examples, also include indoor circulation blower fan 11 and/or outdoor circulating wind machine 12, described indoor circulation blower fan 11 is arranged in housing, and described outdoor circulating wind machine 12 is installed on described primary side outdoor heat exchange passage 9 and/or secondary side outdoor heat exchange passage 10.
In other concrete examples, described electricity refrigerating plant is two sets, adopts two set electricity refrigerating plants can also air be filtered only while realizing heat exchange, reduces dust in machine room and fall in server, extend the operation time of server.
Specifically, this utility model also includes PLC, and described PLC is all connected by control line with off-premises station and indoor set. More specifically, above-mentioned indoor circulation blower fan 11 and/or outdoor circulating wind machine 12 and condenser fan, compressor 5 are each through control line and described PLC.
In certain embodiments, described indoor set is also associated with suspension rod 14 is installed, it is possible to indoor set is arranged on the position such as top of machine room.
The operation method of the above-mentioned a kind of above-mentioned air source Double-working-condition Split type air conditioner of this utility model, as in figure 2 it is shown, when, after startup self-detection, running in the following manner according to different operating modes:
1. electricity refrigeration work operating mode:
Work as startup self-detection, when indoor arrange the difference of temperature T1 and outside air temperature T4 less than 3 degree, it is possible to automatically select by electricity refrigerating plant work by PLC logic programming controller; Namely above-mentioned indoor arrange temperature can refer to indoor air temperature; In this utility model air source Double-working-condition Split type air conditioner, electricity refrigerating plant runs;
Indoor circulation blower fan works, air passes sequentially through indoor roughing efficiency air filter filtration, sensible heat exchanger, condenser, and automatic detection enters the air themperature T3 before sensible heat exchanger and air pressure P1, and air is by automatically detecting air themperature T2 after sensible heat exchanger, air passes through condenser, detects T1.
The cold air inlet chamber internal recycle that becomes after the condensed device of room air cools down;
When air-conditioner continuous operation, inlet temperature (indoor return air temperature) T3 in sensing chamber, as T3=T1, compressor quits work; As inlet temperature T3 in sensing chamber, when T3-T1=2 spends, compressor start, the condensed device indoor circulation air of room air, goes round and begins again.
When air source Double-working-condition Split type air conditioner continuous operation, room air is filtered by indoor roughing efficiency air filter, outdoor air aspiration pressure and detection P1 pressure are more than the pressure in the room air pressure set and entrance air-conditioner, PLC logic programming controller controls to report to the police, may determine that and need to block for roughing efficiency air filter 13 laying dust, roughing efficiency air filter 13 in cleaning chamber.
2. air insulated heat-exchanger rig carries out outer circulation isolation heat exchange pre-cooling, electricity refrigerating plant work operating mode:
Work as startup self-detection, when indoor arrange between temperature T1 and outside air temperature T4 the temperature difference more than 3 degree again less than 6 degree time, it is possible to automatically select air insulated heat-exchanger rig by logic programming controller and carry out outer circulation isolation heat exchange pre-cooling, electricity refrigerating plant work.
Indoor circulation blower fan works, and the logical indoor roughing efficiency air filter of room air filters, and detects T3, P1. After being cooled down by sensible heat exchanger 8, detect T2, by condenser, the air themperature T1 after detection condenser process.
Detection T2, T1 temperature, regulates compressor expansion valve opening, electricity refrigerating plant work;
Outside the condensed device of room air, the cold air inlet chamber internal recycle that becomes after reason cools down;
Outdoor circulating wind machine 12 works, and the roughing efficiency air filter of outdoor air logical outdoor air inlet filters 13, and outdoor air detects P2 after filtering 13 by the roughing efficiency air filter of outdoor air inlet;After sensible heat exchanger heat exchange, outside discharge chamber;
When this utility model air-conditioner continuous operation, inlet temperature (indoor return air temperature) T3 in sensing chamber, as T3=T1, compressor quits work; This utility model air-conditioner works on, inlet temperature (indoor return air temperature) T3 in sensing chamber, when T3-T1=2 spends, and compressor start, condenser cooling indoor circulation air, goes round and begins again.
When this utility model air-conditioner continuous operation, the roughing efficiency air filter at the logical indoor air inlet place of room air filters, detection room air is through the air pressure P1 of the roughing efficiency air filter at indoor air inlet place, P1 pressure is less than by the pressure of air before roughing efficiency air filter, action is reported to the police, it is judged as that roughing efficiency air filter laying dust blocks, the roughing efficiency air filter of air inlet in cleaning chamber.
The roughing efficiency air filter of the logical outdoor air inlet of outdoor air filters, sensing chamber's outer air is through the air pressure P2 of the roughing efficiency air filter at indoor air inlet place, P2 pressure is less than by the pressure of air before roughing efficiency air filter, action is reported to the police, it is judged as that roughing efficiency air filter laying dust blocks, the roughing efficiency air filter at cleaning chamber external air inlet mouth place.
3. outer circulation isolation heat exchange refrigeration work operating mode:
Work as startup self-detection, when indoor arrange that between temperature T1 and outside air temperature T4, the temperature difference is more than 6 degree, automatically select air insulated heat-exchanger rig and carry out outer circulation isolation heat exchange cooling, electricity refrigerating plant work;
Indoor circulation blower fan works, and after room air is filtered by the roughing efficiency air filter at indoor air inlet place, detects T3, P1. After being cooled down by sensible heat exchanger heat exchange, detect T2, cooled down by condenser, detect T1.
Detection T2 is less than waiting T1 temperature, and compression electromechanics refrigeration quits work; Detection T2 is more than T1 temperature 2 degree, and the dynamo-electric cooling activation of compression works.
Room air through air insulated heat-exchanger rig heat exchange process after become cold air, by condenser inlet chamber internal recycle cool down;
Outdoor circulating wind machine works, and outdoor air is filtered by the roughing efficiency air filter of outdoor air inlet, detects P2; After air heat exchanger heat exchange, outside discharge chamber.
As this utility model air-conditioner continuous operation, return air temperature T3 in sensing chamber, as T3=T1, outdoor circulating wind machine quits work. Air-conditioner works on, return air temperature T3 in sensing chamber, and when T3-T1=2 spends, outdoor circulating wind machine starts, and air heat exchanger process chamber inner circulating air goes round and begins again.
When this utility model air-conditioner continuous operation, the roughing efficiency air filter at the logical indoor air inlet place of room air filters, detection room air is through the air pressure P1 of the roughing efficiency air filter at indoor air inlet place, P1 pressure is less than by the pressure of air before roughing efficiency air filter, action is reported to the police, it is judged as that roughing efficiency air filter laying dust blocks, the roughing efficiency air filter of air inlet in cleaning chamber.
The roughing efficiency air filter of the logical outdoor air inlet of outdoor air filters, sensing chamber's outer air is through the air pressure P2 of the roughing efficiency air filter at indoor air inlet place, P2 pressure is less than by the pressure of air before roughing efficiency air filter, action is reported to the police, it is judged as that roughing efficiency air filter laying dust blocks, the roughing efficiency air filter at cleaning chamber external air inlet mouth place.
The operation principle of this utility model air insulated heat-exchanger rig: air direct heat transfer device utilizes indoor high temperature air and outdoor Cryogenic air to isolate in indoor set to carry out heat exchanger, owing to there is temperature difference in these two strands of air-flows, heat exchange will be carried out in total-heat exchanger, carry out exchange temperature by the flowing of air and conduction of heat. This process can be through what flat partition board completed; Outdoor Cryogenic air and indoor high temperature air carry out heat exchange by the two of sensible heat exchanger adjacency channels, the heat of indoor high temperature is transferred in the Cryogenic air of outdoor, carry out heat transmission with this, and passage completely cuts off completely, at utmost completely cuts off cross-contamination.
Freon evaporative condenser heat absorption heat release principle taked by electricity refrigerating plant, effectively carries out the refrigeration of high energy efficiency ratio.In cooling down for industry, equipment is single cold type, and compressor is equipped with pressure control device, it is possible to freeze in the particularly winter whole year.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (8)

1. an air source Double-working-condition Split type air conditioner, it is characterised in that including off-premises station and indoor set, electricity refrigerating plant and air insulated heat-exchanger rig, described electricity refrigerating plant includes vaporizer, condenser, condenser fan, compressor,
Described compressor, condenser and condenser fan are integrated in described off-premises station, described vaporizer is integrated in described indoor set, described compressor is connected with described condenser by pipeline, and described condenser connects formation closed cycle by circulating line with described vaporizer; Described air insulated heat-exchanger rig is integrated in indoor set, and room air and outdoor air carry out isolation heat exchange.
2. a kind of air source Double-working-condition Split type air conditioner according to claim 1, it is characterised in that described electricity refrigerating plant also includes throttling arrangement, and described throttling arrangement is arranged on described circulating line.
3. a kind of air source Double-working-condition Split type air conditioner according to claim 1, it is characterised in that described electricity refrigerating plant is two sets.
4. a kind of air source Double-working-condition Split type air conditioner according to any one of claims 1 to 3, it is characterized in that, described air insulated heat-exchanger rig includes sensible heat exchanger, primary side outdoor heat exchange passage and secondary side outdoor heat exchange passage, described primary side outdoor heat exchange passage is connected with the outdoor air air inlet in described sensible heat exchanger by the outdoor air inlet on indoor set, and described secondary side outdoor heat exchange passage is connected with the outdoor air air outlet in described sensible heat exchanger by the outdoor air outlet on indoor set; Indoor air inlet in described sensible heat exchanger is corresponding respectively with indoor air outlet to be connected with the room air air inlet being provided with on indoor set and room air air outlet.
5. a kind of air source Double-working-condition Split type air conditioner according to claim 4, it is characterized in that, also include indoor circulation blower fan and/or outdoor circulating wind machine, described indoor circulation assembling is in housing, and described outdoor circulating wind machine is installed on described primary side outdoor heat exchange passage and/or secondary side outdoor heat exchange passage.
6. a kind of air source Double-working-condition Split type air conditioner according to claim 4, it is characterised in that described outdoor air air inlet and described room air air inlet are mounted on roughing efficiency air filter.
7. a kind of air source Double-working-condition Split type air conditioner according to claim 4, it is characterised in that described sensible heat exchanger is have the sensible air heat exchanger of sheet metal structure.
8. a kind of air source Double-working-condition Split type air conditioner according to claim 4, it is characterised in that also including PLC, described PLC is all connected by control line with off-premises station and indoor set.
CN201620081129.4U 2016-01-27 2016-01-27 Air source duplex condition split air conditioner ware Active CN205316490U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620081129.4U CN205316490U (en) 2016-01-27 2016-01-27 Air source duplex condition split air conditioner ware

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620081129.4U CN205316490U (en) 2016-01-27 2016-01-27 Air source duplex condition split air conditioner ware

Publications (1)

Publication Number Publication Date
CN205316490U true CN205316490U (en) 2016-06-15

Family

ID=56205923

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620081129.4U Active CN205316490U (en) 2016-01-27 2016-01-27 Air source duplex condition split air conditioner ware

Country Status (1)

Country Link
CN (1) CN205316490U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105509161A (en) * 2016-01-27 2016-04-20 能节(北京)科技发展有限公司 Air source dual-operation split air conditioner and operation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105509161A (en) * 2016-01-27 2016-04-20 能节(北京)科技发展有限公司 Air source dual-operation split air conditioner and operation method thereof
CN105509161B (en) * 2016-01-27 2019-09-06 能节(北京)科技发展有限公司 A kind of air-source Double-working-condition Split type air conditioner and operation method

Similar Documents

Publication Publication Date Title
CN110360622B (en) Kitchen air conditioning system
CN203837171U (en) Heat pump system for fan coil and heat recovery fresh-air conditioning unit
CN105444310B (en) A kind of double cold source intelligent fresh air units of double plates
CN102767875A (en) Air conditioning unit for hot recovery of heat pump
CN106322531B (en) A kind of full outdoor heat exchange conditioner with fresh air
CN105352066A (en) Heat recovery fresh air handling unit suitable for independent temperature and humidity control system and control method of heat recovery fresh air handling unit
CN102967019A (en) Direct evaporation integral heat pipe exchanger
CN102748824B (en) Heat removal device of air conditioning heat pipe all-in-one machine in communication machine room
CN105509161A (en) Air source dual-operation split air conditioner and operation method thereof
CN104061630A (en) Unit type fresh air processing machine
CN202813612U (en) Heat removal device of air conditioner and heat pipe integrated machine of communication machine room
CN102954548A (en) Direct evaporation split type heat pipe heat-exchanger
CN104613667A (en) Combined air-conditioning system as well as control method thereof
CN205316490U (en) Air source duplex condition split air conditioner ware
CN201964534U (en) Base station air conditioner and communication base station with same
CN205014519U (en) Energy -conserving dehumidification system of precooling
CN208936382U (en) A kind of ultra-low temperature air source hot wind multi-connected machine heating system
CN215637696U (en) Air-cooled heat pump air conditioning unit condenser re-cooling system
CN103712296A (en) Combined fresh air thermostatic cooling system special for machine rooms and base stations
CN204084622U (en) A kind of modular fresh air processor
CN101839529A (en) Heat-recovery heat pump fresh-air conditioning unit
CN104061638A (en) Filter-free annual-operating air conditioning device and air conditioning method
CN207299282U (en) The directly natural Cooling Air-conditioning System of fresh air
CN203404923U (en) Total-heat-recovery-type folding air sending-returning-discharging-integrated air conditioning unit
CN102278840A (en) Air conditioner for machine room

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant