CN205980031U - Fresh air conditioning unit system - Google Patents
Fresh air conditioning unit system Download PDFInfo
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- CN205980031U CN205980031U CN201620919770.0U CN201620919770U CN205980031U CN 205980031 U CN205980031 U CN 205980031U CN 201620919770 U CN201620919770 U CN 201620919770U CN 205980031 U CN205980031 U CN 205980031U
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Abstract
The utility model relates to a fresh air conditioning unit system, it includes indoor set air conditioner device, off -premises station air conditioner device and new trend pipeline, wherein, the new trend pipeline is including being used for the intake stack of introducing outdoor new trend and being used for sending the new trend into indoor supply air duct, indoor heat exchanger of first indoor heat exchanger, second and supply air duct in intake stack and the indoor set air conditioner device communicate in proper order. The utility model relates to a fresh air conditioning unit system compares with prior art's fresh air unit, can combine the change of indoor load according to the change of outdoor environment, suitably adjusts two indoor heat exchanger's evaporating temperature, controls the air supply state of new trend, can guarantee to send into the state of indoor new trend for constant temperature and humidity.
Description
Technical field
This utility model belongs to air conditioning system field and in particular to a kind of fresh air handining unit system.
Background technology
" comfortableness " that domestic air conditioning technology increasingly pays close attention to room air controls, for example, Temperature and Humidity Control and air product
Quality Control etc..
Air quality control ratio is more natural and effective method is using outdoor fresh space, room air to be put
Change or dilute that is to say, that sucking outdoor fresh air, the indoor visceral-qi of exclusion.Therefore, in order to improve indoor air quality, use before
In the VMC (Ventilation Mechanical Control System) of central air conditioner system, also gradually it is applied to domestic air-conditioning system.
The application of direct-evaporation-type Fresh air handling units is more and more extensive at present.Fresh air handling units mainly undertake new wind load, however,
When the warm and humid state difference of outer air is larger indoors, particularly in summer damp-heat area or cold districts, fresh air
Exchanging can the bigger load of producing ratio closed loop；In addition, under summer condition, in order to reach the dehumidification treatments to outdoor fresh air, newly
Blower fan group need to reduce evaporating temperature as far as possible, makes the evaporator surface temperature of Fresh air handling units be less than the dew point temperature of outdoor fresh air, this
For the compressor of Fresh air handling units, pressure ratio increases, and entering power increases, and runs uneconomical.
Content of the invention
For solving above-mentioned technical problem, this utility model provides a kind of fresh air handining unit system, described fresh air conditioner
Machine set system includes indoor set air-conditioning device, off-premises station air-conditioning device and fresh air pipeline；Wherein, described off-premises station device includes
Duplex cylinder compressor, outdoor heat converter, the first reservoir and the second reservoir；Described indoor unit includes first throttle machine
Structure, the first indoor heat converter, second throttle body and the second indoor heat converter；Described duplex cylinder compressor, outdoor heat exchange
Device, first throttle mechanism, the first indoor heat converter and the first reservoir are sequentially connected in series and form the first of refrigerant cycle circulation
Processing system；Described duplex cylinder compressor, outdoor heat converter, second throttle body, the second indoor heat converter and the second liquid storage
Device is sequentially connected in series the second processing system forming refrigerant cycle circulation；Described fresh air pipeline is included for introducing outdoor fresh air
Intake stack and for fresh air is sent into indoor air supply duct；Described intake stack and described first indoor heat converter
Air inlet connects；The air outlet of described first indoor heat converter is connected with the air inlet of described second indoor heat converter；Institute
The air outlet stating the second indoor heat converter is connected with described air supply duct.
Preferably, the aerofluxuss side of described duplex cylinder compressor has first exhaust branch road and second exhaust branch road；Described
One exhaust branch belongs to the first processing system；Described second exhaust branch road belongs to second processing system；From described duplex cylinder compressor
Aerofluxuss side to described duplex cylinder compressor air-breathing side between, the first exhaust branch road of described first processing system, outdoor
The of heat exchanger, first throttle mechanism, the first indoor heat converter and described first reservoir and described second processing system
Two exhaust branch, outdoor heat converter, second throttle body, the second indoor heat converter and described second reservoir form parallel connection
Setting.
Preferably, described off-premises station device also includes two four-way change-over valves, and wherein, the first four-way change-over valve is arranged on institute
State on first exhaust branch road, the second four-way change-over valve is arranged on described second exhaust branch road；When described air conditioning system is in system
During cold working condition, described first four-way change-over valve connects described first exhaust branch road and described outdoor heat converter, and even
Lead to described first indoor heat converter and described first reservoir；Described second four-way change-over valve connects described second exhaust branch road
With described outdoor heat converter, and connect described second indoor heat converter and described second reservoir；When described air-conditioning system
System is in when heating working condition, and described first four-way change-over valve connects described first exhaust branch road and the first indoor heat exchange
Device, and connect outdoor heat converter and the first reservoir；Described second four-way change-over valve connect described second exhaust branch road with
Second indoor heat converter, and connect outdoor heat converter and the second reservoir.
Preferably, described first indoor heat converter is high-temperature evaporator, and described second indoor heat converter steams for low temperature
Send out device；The precooling zone of described intake stack and described high-temperature evaporator, the dehumidifying section of described cryogenic vaporizer and described air-supply
Pipeline is sequentially communicated.
Preferably, described first throttle mechanism and/or described second throttle body are electric expansion valve and/or capillary tube.
The fresh air handining unit system that this utility model relates to, compared with the Fresh air handling units of prior art, can be according to outdoor
The change of environment combines the change of indoor load, suitably adjusts the evaporating temperature of two indoor heat converters, controls fresh air
Ventilation state is it is ensured that send into the state that indoor fresh air is constant temperature and humidity.
Brief description
Fig. 1 is the structural representation of the fresh air handining unit system according to this utility model embodiment 1.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, this utility model is described in detail.But these embodiment party
Formula is not intended to limit this utility model, structure that those of ordinary skill in the art is made according to these embodiments, method or
Conversion functionally is all contained in protection domain of the present utility model.
Embodiment 1
As shown in figure 1, the fresh air handining unit system of the present embodiment includes off-premises station air-conditioning device 1, indoor air conditioner dress
Put 2 and fresh air pipeline (in figure does not mark), wherein：
Off-premises station air-conditioning device 1 includes duplex cylinder compressor 11, outdoor heat converter 12, the first reservoir 13 and the second liquid storage
Device 14.
Indoor set air-conditioning device 2 includes first throttle mechanism, the first indoor heat converter 22, second throttle body and second
Indoor heat converter 24.In the present embodiment, first throttle mechanism is the first electric expansion valve 21, and second throttle body is the second electricity
Sub- expansion valve 23；In other embodiments, described first throttle mechanism and second throttle body can also be capillary tube etc. its
He has device or the combination of devices of throttling function.
Wherein, duplex cylinder compressor 11, outdoor heat converter 12, the first electric expansion valve 21, the first indoor heat converter 22
It is sequentially connected in series the first processing system forming refrigerant cycle circulation with the first reservoir 13.Duplex cylinder compressor 11, outdoor heat are handed over
Parallel operation 12, the second electric expansion valve 22, the second indoor heat converter 24 and the second reservoir 14 are sequentially connected in series formation cold-producing medium and follow
The second processing system that circulation leads to.
Fresh air pipeline includes the intake stack 31 for introducing outdoor fresh air and is used for for fresh air sending into indoor air-supply
Pipeline 32；Hollow arrow direction as shown in Figure 1 is the flow direction of fresh air, flows through the first Indoor Thermal successively from intake stack 31
Exchanger 22, the second indoor heat converter 24 and air supply duct 32；Knowable to the direction of new wind flow：Intake stack 31 and first
Air inlet (in figure does not mark) connection of indoor heat converter 22；The air outlet (in figure does not mark) of the first indoor heat converter 22
Connect with the air inlet (in figure does not mark) of the second indoor heat converter 24；Air outlet (the in figure of the second indoor heat converter 24
Do not mark) connect with air supply duct 32.In addition, the first indoor set heat exchanger 22 and the second indoor heat exchanger 24 can also be arranged in
In one device, fresh air sequentially enters first, second indoor heat exchanger.
In the present embodiment, the first indoor heat converter 22 is high-temperature evaporator, and the second indoor heat converter 24 is low temperature
Vaporizer.Specifically, high-temperature evaporator 22 is the heat exchanger of high evaporating temperature, mainly undertakes sensible heat load, in refrigeration work
It is also referred to as sensible heat vaporizer under condition；Cryogenic vaporizer 24 is the heat exchanger of low evaporating temperature, mainly undertakes latent heat load, in refrigeration
It is also referred to as latent heat evaporation device under operating mode.
In the present embodiment, intake stack 31 and the precooling zone of high-temperature evaporator 22, the dehumidifying section of cryogenic vaporizer 24 with
And air supply duct 32 is sequentially communicated.Specifically, outdoor fresh air initially enters high-temperature evaporator 22 by intake stack 31
Precooling zone carries out pre-cooling, and the dehumidifying section entering back into cryogenic vaporizer 24 afterwards is dehumidified, thus ensureing to send from air supply duct 32
Enter interior is the fresh air of constant temperature and humidity.
The fresh air handining unit system of the present embodiment, can combine the change of indoor load according to the change of outdoor environment,
Suitably adjusting the evaporating temperature of two indoor heat converters, controlling the ventilation state of fresh air it is ensured that sending into the new of interior
Wind is the state of constant temperature and humidity；Furthermore, the new wind load of part shared by the vaporizer of one of high evaporating temperature, thus can
To improve the efficiency of the overall operation of fresh air handining unit system.
With regard to the circulation of cold-producing medium, in the present embodiment, the aerofluxuss side of duplex cylinder compressor 11 has first exhaust branch road
11A and second exhaust branch road 11B；First exhaust branch road 11A belongs to the first processing system；Second exhaust branch road 11B belongs to second
Processing system.
In the present embodiment, as shown in figure 1, from the aerofluxuss side of duplex cylinder compressor 11 to the air-breathing one of duplex cylinder compressor 11
Between side, the first exhaust branch road 11A of the first processing system, outdoor heat converter 12, the first electric expansion valve 21, first are indoor
Heat exchanger 22 and the first reservoir 13 are electric with the second exhaust branch road 11B of second processing system, outdoor heat converter 12, second
Sub- expansion valve 23, the second indoor heat converter 24 and the second reservoir 14 form and are arranged in parallel.
The fresh air handining unit system of the present embodiment, using the vaporizer of two different evaporating pressures and double suction gas, double
The compressor of reservoir, it is achieved that different pressure of inspiration(Pi), effectively improves the overall efficiency of Fresh air handling units system.
In the present embodiment, as shown in figure 1, off-premises station device 1 also includes two four-way change-over valves, wherein, the first four-way
Reversal valve 15 is arranged on first exhaust branch road 11A, and the second four-way change-over valve 16 is arranged on second exhaust branch road 11B.
When fresh air handining unit system is in refrigeration work state, the first four-way change-over valve 15 connects first exhaust branch road
11A and outdoor heat converter 12, and connect the first indoor heat converter 22 and the first reservoir 13；Second four-way change-over valve 16
Connection second exhaust branch road 11B and outdoor heat converter 12, and connect the second indoor heat converter 24 and the second reservoir 14.
When fresh air handining unit system is in and heats working condition, the first four-way change-over valve 15 connects first exhaust branch road
11A and the first indoor heat converter 22, and connect outdoor heat converter 12 and the first reservoir 13；Second four-way change-over valve 16
Connection second exhaust branch road 11B and the second indoor heat converter 24, and connect outdoor heat converter 12 and the second reservoir 14.
In the fresh air handining unit system of the present embodiment, during refrigeration, the cyclic process of cold-producing medium is as follows：Cold-producing medium is in twin-tub
Compressor 1 is discharged after compression, and a road enters into first exhaust branch road 11A, then enters into room through the first four-way change-over valve 15
Outer heat-exchanger 12 (i.e. condenser), then (high temperature steams to enter into the first indoor heat converter 22 by the first electric expansion valve 21
Send out device), then pass through the first indoor heat converter 22 air vent, enter into the first reservoir 13 through the first four-way change-over valve 15,
It is compressed (the non-label of in figure cylinder), the cold-producing medium after compression enters compressor 11 in the cylinder entering duplex cylinder compressor 11 afterwards
In cavity；Another road enters into second exhaust branch road 11B, then enters into outdoor heat converter 12 through the second four-way change-over valve 16
(i.e. condenser), then the second indoor heat converter 24 (cryogenic vaporizer) is entered into by the second electric expansion valve 23, then pass through
The air vent of the second indoor heat converter 24, enter into the second reservoir 14 through the second four-way change-over valve 16, enter finally into double
It is compressed (the non-label of in figure cylinder), the cold-producing medium after compression enters in compressor 11 cavity in the cylinder of cylinder compressor 11.
In the fresh air handining unit system of the present embodiment, when heating, the cyclic process of cold-producing medium is as follows：Cold-producing medium is in twin-tub
Compressor 1 is discharged after compression, and a road enters into first exhaust branch road 11A, then enters into through the first four-way change-over valve 15
One indoor heat converter 22 (flow direction of cold-producing medium is contrary with above-mentioned process of refrigerastion), then enter into through the first electric expansion valve 21
Outdoor heat converter 12, then enter into the first reservoir 13 through the first four-way change-over valve 15, finally enter duplex cylinder compressor 11
Cylinder in be compressed (the non-label of in figure cylinder)；Another road enters into second exhaust branch road 11B, then changes through the second four-way
Enter the second indoor heat converter 24 (flow direction of cold-producing medium is contrary with above-mentioned process of refrigerastion) to valve 16, more swollen through the second electronics
Swollen valve 23 enters into outdoor heat converter 12, then enters into the second reservoir 13 through the second four-way change-over valve 16, finally enters
It is compressed (the non-label of in figure cylinder) in the cylinder of duplex cylinder compressor 11.
In the present embodiment, the first electric expansion valve 21 and the second electric expansion valve 23 can adjust entrance the first Room respectively
Inside heat exchanger 22 and the refrigerant flow of the second indoor heat converter 24, simultaneously air quantity can suitably be adjusted, thus real
Existing two different evaporating temperatures, for example, the evaporating temperature of two vaporizers can be respectively set to 18 DEG C and 8 DEG C, realizes respectively
Cooling and the function of dehumidifying, and heat exchange and air circulation are realized by respective indoor fan.
The fresh air handining unit system of the present embodiment can apply to Household air conditioner refrigeration system it is also possible to be applied to automobile-used
Air-conditioning refrigeration system, its device simple, special dehumidification equipment need not be configured, be adjusted merely by two vaporizers being arranged in parallel
Temperature, reaches the pre-cooling to fresh air and the purpose of dehumidifying；And the vaporizer using two different evaporating pressures and double suction gas,
The compressor of double reservoirs, it is achieved that different pressure of inspiration(Pi), effectively improves the overall efficiency of Fresh air handling units system.
It should be understood that although this specification is been described by according to embodiment, but not each embodiment only comprises one
Individual independent technical scheme, only for clarity, those skilled in the art should will say this narrating mode of description
As an entirety, the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment understanding.
The a series of detailed description of those listed above is only for the tool of feasibility embodiment of the present utility model
Body illustrates, they are simultaneously not used to limit protection domain of the present utility model, all is made without departing from this utility model skill spirit
Equivalent implementations or change should be included within protection domain of the present utility model.
Claims (6)
1. a kind of fresh air handining unit system it is characterised in that：
Described fresh air handining unit system includes indoor set air-conditioning device, off-premises station air-conditioning device and fresh air pipeline；Wherein,
Described off-premises station device includes duplex cylinder compressor, outdoor heat converter, the first reservoir and the second reservoir；Described interior
Machine device includes first throttle mechanism, the first indoor heat converter, second throttle body and the second indoor heat converter；
Described duplex cylinder compressor, outdoor heat converter, first throttle mechanism, the first indoor heat converter and the first reservoir are successively
Series connection forms the first processing system of refrigerant cycle circulation；
Described duplex cylinder compressor, outdoor heat converter, second throttle body, the second indoor heat converter and the second reservoir are successively
Series connection forms the second processing system of refrigerant cycle circulation；
Described fresh air pipeline includes the intake stack for introducing outdoor fresh air and is used for for fresh air sending into indoor ajutage
Road；
Described intake stack is connected with the air inlet of described first indoor heat converter；The air-out of described first indoor heat converter
Mouth is connected with the air inlet of described second indoor heat converter；The air outlet of described second indoor heat converter and described ajutage
Road connects.
2. fresh air handining unit system as claimed in claim 1 it is characterised in that：
The aerofluxuss side of described duplex cylinder compressor has first exhaust branch road and second exhaust branch road；
Described first exhaust branch road belongs to the first processing system；Described second exhaust branch road belongs to second processing system；
Between from the aerofluxuss side of described duplex cylinder compressor to the air-breathing side of described duplex cylinder compressor, described first processing system
First exhaust branch road, outdoor heat converter, first throttle mechanism, the first indoor heat converter and described first reservoir and institute
State the second exhaust branch road of second processing system, outdoor heat converter, second throttle body, the second indoor heat converter and described
Second reservoir forms and is arranged in parallel.
3. fresh air handining unit system as claimed in claim 2 it is characterised in that：
Described off-premises station device also includes two four-way change-over valves, and wherein, the first four-way change-over valve is arranged on described first exhaust
On branch road, the second four-way change-over valve is arranged on described second exhaust branch road；
When described air conditioning system is in refrigeration work state, described first four-way change-over valve connect described first exhaust branch road with
Described outdoor heat converter, and connect described first indoor heat converter and described first reservoir；Described second four-way changes
Connect described second exhaust branch road and described outdoor heat converter to valve, and connect described second indoor heat converter with described
Second reservoir；
When described air conditioning system is in and heats working condition, described first four-way change-over valve connect described first exhaust branch road with
First indoor heat converter, and connect outdoor heat converter and the first reservoir；Described second four-way change-over valve connection is described
Second exhaust branch road and the second indoor heat converter, and connect outdoor heat converter and the second reservoir.
4. the fresh air handining unit system as described in any one in claims 1 to 3 it is characterised in that：
Described first indoor heat converter is high-temperature evaporator, and described second indoor heat converter is cryogenic vaporizer；Described enter
Wind pipeline is connected successively with the precooling zone of described high-temperature evaporator, the dehumidifying section of described cryogenic vaporizer and described air supply duct
Logical.
5. the fresh air handining unit system as described in any one in claims 1 to 3 it is characterised in that：
Described first throttle mechanism is the first electric expansion valve；
Described second throttle body is the second electric expansion valve.
6. the fresh air handining unit system as described in any one in claims 1 to 3 it is characterised in that：
Described first throttle mechanism and/or described second throttle body are capillary tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919770.0U CN205980031U (en) | 2016-08-22 | 2016-08-22 | Fresh air conditioning unit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919770.0U CN205980031U (en) | 2016-08-22 | 2016-08-22 | Fresh air conditioning unit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205980031U true CN205980031U (en) | 2017-02-22 |
Family
ID=58033661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620919770.0U Active CN205980031U (en) | 2016-08-22 | 2016-08-22 | Fresh air conditioning unit system |
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| CN106839346A (en) * | 2017-04-13 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method |
| CN106871513A (en) * | 2017-04-13 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of radiant type wall-hung air conditioner and control method |
| CN106871385A (en) * | 2017-04-13 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method |
| CN107023957A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023962A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023963A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023959A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023961A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107084485A (en) * | 2017-04-13 | 2017-08-22 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN108692478A (en) * | 2018-05-04 | 2018-10-23 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| WO2019205668A1 (en) * | 2018-04-24 | 2019-10-31 | 珠海格力电器股份有限公司 | Fresh air conditioning system for air conditioner and air conditioner |
| CN110594916A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Fresh air conditioning system and control method |
| CN111189108A (en) * | 2018-11-15 | 2020-05-22 | 同方人工环境有限公司 | Direct refrigeration type magnetic suspension variable frequency air conditioning unit |
| WO2021042436A1 (en) * | 2019-09-04 | 2021-03-11 | 广东美的制冷设备有限公司 | Air conditioning system and control method and device thereof |
| WO2021042437A1 (en) * | 2019-09-04 | 2021-03-11 | 广东美的制冷设备有限公司 | Air-conditioning system and control method therefor |
| CN113091182A (en) * | 2021-05-24 | 2021-07-09 | 青岛腾远设计事务所有限公司 | Full fresh air direct expansion type air handling unit and air conditioning system |
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| CN107084485A (en) * | 2017-04-13 | 2017-08-22 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023959A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN106871385A (en) * | 2017-04-13 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method |
| CN107023957A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107023962B (en) * | 2017-04-13 | 2020-08-25 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN107023963A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN106871513A (en) * | 2017-04-13 | 2017-06-20 | 青岛海尔空调器有限总公司 | A kind of radiant type wall-hung air conditioner and control method |
| CN107023961A (en) * | 2017-04-13 | 2017-08-08 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
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| CN107084485B (en) * | 2017-04-13 | 2021-03-16 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN106839346A (en) * | 2017-04-13 | 2017-06-13 | 青岛海尔空调器有限总公司 | A kind of air-conditioner and control method |
| CN107023957B (en) * | 2017-04-13 | 2020-08-25 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN107023963B (en) * | 2017-04-13 | 2020-11-27 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN106839346B (en) * | 2017-04-13 | 2020-04-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| CN107023959B (en) * | 2017-04-13 | 2020-04-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method |
| WO2019205668A1 (en) * | 2018-04-24 | 2019-10-31 | 珠海格力电器股份有限公司 | Fresh air conditioning system for air conditioner and air conditioner |
| CN108692478B (en) * | 2018-05-04 | 2019-10-22 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN108692478A (en) * | 2018-05-04 | 2018-10-23 | 珠海格力电器股份有限公司 | The control method of air-conditioning system and air-conditioning system |
| CN111189108A (en) * | 2018-11-15 | 2020-05-22 | 同方人工环境有限公司 | Direct refrigeration type magnetic suspension variable frequency air conditioning unit |
| WO2021042436A1 (en) * | 2019-09-04 | 2021-03-11 | 广东美的制冷设备有限公司 | Air conditioning system and control method and device thereof |
| WO2021042437A1 (en) * | 2019-09-04 | 2021-03-11 | 广东美的制冷设备有限公司 | Air-conditioning system and control method therefor |
| CN110594916A (en) * | 2019-09-23 | 2019-12-20 | 珠海格力电器股份有限公司 | Fresh air conditioning system and control method |
| CN113091182A (en) * | 2021-05-24 | 2021-07-09 | 青岛腾远设计事务所有限公司 | Full fresh air direct expansion type air handling unit and air conditioning system |
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Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Patentee after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Export Processing Zone, Nanjing Road, No. 888, Shanghai Patentee before: Rili Electric Appliance Co., Ltd., Shanghai |