CN114353207A - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
- Publication number
- CN114353207A CN114353207A CN202210081924.3A CN202210081924A CN114353207A CN 114353207 A CN114353207 A CN 114353207A CN 202210081924 A CN202210081924 A CN 202210081924A CN 114353207 A CN114353207 A CN 114353207A
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- heat exchange
- air conditioning
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- exchange structure
- heat exchanger
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 49
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims description 28
- 239000002131 composite material Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 description 25
- 230000000694 effects Effects 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The application provides an air conditioning unit, which comprises a fan assembly and a heat exchange structure, wherein the fan assembly comprises a motor structure; the heat exchange structure is used for cooling the motor structure; the heat exchange structure comprises a radiation heat exchange structure, and the radiation heat exchange structure can perform radiation heat exchange with the motor structure so as to cool the motor structure. According to the air conditioning unit of this application, can improve temperature control accuracy.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to an air conditioning unit.
Background
At present, in the design process of a hospital operating room purifying air conditioning system, personnel load, equipment load, lighting load and cold load formed by heat transfer of a building envelope are generally considered, but the cold load formed by heating of a fan and the cold load which causes additional increase in actual conditions are often ignored. The hospital purifies air conditioning unit and is in the consideration of factors such as leaking out, the motor of fan is generally in the unit inside, the fan that also is taken into account in the heat dissipation of motor gets the heat load, and the amount of wind is big more, the fan gets the heat load also big more, to I level clean operating room, the fan that circulation purified unit gets the heat load and is close indoor load sum even, can lead to the temperature to hardly carry out more accurate control through a surface cooler, can appear even and set for the temperature difference and exceed about two to three degrees, will appear various accidents to the clean operating room that has strict temperature requirement.
Therefore, how to provide an air conditioning unit capable of improving the temperature control accuracy becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide an air conditioning unit, which can improve the temperature control precision.
In order to solve the above problem, the present application provides an air conditioning unit, including:
the fan assembly comprises a motor structure;
and a heat exchange structure; the heat exchange structure comprises a radiation heat exchange structure, and the radiation heat exchange structure can perform radiation heat exchange with the motor structure so as to cool the motor structure.
Further, the air conditioning unit further comprises a heat exchanger, the heat exchanger is connected with the heat exchange structure in series, and a refrigerant in the heat exchanger can enter the heat exchange structure.
Further, the air conditioning unit also comprises an outlet pipe which is communicated to the outlet of the heat exchanger; the outlet pipe is used for guiding the refrigerant in the heat exchanger to flow out; the inlet of the heat exchange structure is communicated with the side wall of the outlet pipe through the inlet flow pipe.
Further, the air conditioning unit still includes the outlet pipe, and the outlet pipe intercommunication heat transfer structure's export and the lateral wall of exit tube.
Further, the air conditioning unit also comprises a control valve; the control valve can control the on-off of the inflow pipe; and/or the control valve can control the flow of the refrigerant in the inflow pipe.
Furthermore, the control valve is arranged on the outlet pipe and is positioned between the inlet pipe and the outlet pipe.
Further, when the control valve can control the flow rate of the refrigerant in the inlet pipe, the control valve can control the flow rate of the refrigerant in the inlet pipe according to the ambient temperature.
Further, the heat exchanger is a surface cooler.
Further, the radiation heat exchange structure is a capillary tube radiation heat exchange end device;
and/or the heat exchange structure is positioned above the fan assembly;
and/or the air conditioning unit is used in an operating room.
Further, the air conditioning unit comprises an air mixing section, a fan composite section, a filtering section, a surface cooling section, a humidifying section, an electric heating section and an air outlet section which are sequentially arranged in the air flow direction; the fan assembly and the heat exchange structure are both arranged on the fan composite section;
and/or when the air conditioning unit further comprises a heat exchanger, the heat exchanger is arranged at the surface cooling section.
The application provides an air conditioning unit, this application is used for cooling down motor structure through heat transfer structure, can effectively reduce the heat load of fan subassembly, reduces circulation purification unit refrigerating output, improves the temperature control precision. The application can effectively reduce the heat load of the fan, and further improve the temperature control precision.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioning unit according to an embodiment of the present application.
The reference numerals are represented as:
1. a wind mixing section; 2. a fan compounding section; 3. a filtration section; 4. a surface cooling section; 5. a humidification stage; 6. an electrical heating section; 7. an air outlet section; 8. a fan assembly; 9. a heat exchange structure; 10. a high efficiency filter; 11. a control valve; 12. a heat exchanger; 13. an electrode humidifier; 14. an electric heater; 15. discharging a pipe; 16. an inlet pipe; 17. a discharge pipe; 18. and (4) feeding the pipe.
Detailed Description
Referring to fig. 1 in combination, an air conditioning unit includes a fan assembly 8 and a heat exchange structure 9, wherein the fan assembly 8 includes a motor structure; heat transfer structure 9 includes radiation heat transfer structure, and radiation heat transfer structure can radiate the heat transfer with motor structure to cool down motor structure. This application is used for cooling down motor structure through heat transfer structure 9, can effectively reduce fan subassembly 8's heat load, reduces circulation and purifies unit refrigerating capacity, then has reduced the influence of fan subassembly 8's motor structure's heat load to the temperature of wind, and then improves air conditioning unit's temperature control precision, guarantees the stability of room air temperature.
The application also discloses some embodiments, and air conditioning unit still includes heat exchanger 12, and heat exchanger 12 and heat exchange structure 9 are established ties mutually, and the refrigerant in the heat exchanger 12 can get into in the heat exchange structure 9. Part of the refrigerant can flow to the radiation heat exchange structure and is mainly used for regulating and controlling the cold load of the fan composite section 2. The inlet of the heat exchanger 12 communicates with an inlet pipe 18.
The application also discloses some embodiments, the air conditioning unit further comprises an outlet pipe 15, and the outlet pipe 15 is communicated to the outlet of the heat exchanger 12; the outlet pipe 15 is used for guiding the refrigerant in the heat exchanger 12 to flow out; the inlet of the heat exchange structure 9 is communicated with the side wall of the outlet pipe 15 through an inlet pipe 16. The refrigerant in the heat exchanger 12 can enter the heat exchange structure 9 through the inflow pipe 16 to exchange heat, and then cool the fan assembly 8.
The application also discloses some embodiments, and air conditioning unit still includes outlet pipe 17, and outlet pipe 17 intercommunication heat exchange structure 9's export and the lateral wall of exit tube 15. The refrigerant after heat exchange in the heat exchange structure 9 flows out of the heat exchange structure 9 through the outflow pipe 17 and then flows out of the outflow pipe 15.
The application also discloses some embodiments, the air conditioning unit further comprises a control valve 11; the control valve 11 can control the on-off of the inflow pipe 16; and/or the control valve 11 can control the flow rate of the refrigerant in the inflow pipe 16.
The present application also discloses embodiments in which the control valve 11 is disposed on the outlet pipe 15, and the control valve 11 is located between the inlet pipe 16 and the outlet pipe 17. The fan divide into fixed frequency and frequency conversion, and the waste heat that the frequency conversion fan produced is unstable, influences air conditioning system's control, can live the fan waste heat of change with control valve 11 effectual control when setting up capillary radiant heat exchanger to promote unit control stability. When the opening of the control valve 11 is the maximum, because the resistance at the outlet pipe 15 is smaller than the resistance in the flow path of the inlet pipe 16, all the refrigerants flowing out of the heat exchanger 12 are discharged from the outlet pipe 15 and cannot enter the inlet pipe 16, and at this time, no refrigerant exists in the heat exchange structure 9, and heat exchange cannot be performed; when the control valve 11 is closed, because the resistance at the outlet pipe 15 is greater than the resistance in the flow path of the inlet pipe 16, the refrigerant flowing out of the heat exchanger 12 cannot be discharged from the outlet pipe 15, and all of the refrigerant enters the inlet pipe 16, and then the refrigerant flow in the heat exchange structure 9 is the largest, and the heat exchange effect is the best; when the opening degree of the control valve 11 is between the maximum opening degree and the closed opening degree, one part of the refrigerant flowing out of the heat exchanger 12 is discharged from the outlet pipe 15, the other part of the refrigerant enters the inflow pipe 16, the refrigerant exists in the heat exchange structure 9 at the moment, and the control valve 11 adjusts the amount of the refrigerant in the heat exchange structure 9 by adjusting the opening degree, so that the heat exchange effect is adjusted.
The application also discloses some embodiments, when the control valve 11 can control the refrigerant flow in the inflow pipe 16, the control valve 11 can control the refrigerant flow in the inflow pipe 16 according to the ambient temperature. Under normal conditions, the temperature rise of the fan assembly 8 is T0-0.5-1.5 ℃, the inflow pipe 16 is opened after the temperature rise of the fan assembly 8 exceeds a normal value for a certain time, namely, a refrigerant in the heat exchanger 12 enters the heat exchange structure 9, the temperature sensor of the air mixing section 1 obtains the temperature T1, the temperature sensor is arranged at the outlet of the fan composite section 2 to obtain the temperature T3, the value of T3-T1 is calculated, and when T is not more than T, the temperature T is not more than T, and the temperature of the inflow pipe 16 is started to be equal to the normal value0minWhen the heat exchanger is used, the flow inlet pipe 16 is closed, only the heat exchanger 12 is required to exchange heat, and when delta T is more than T0minWhen the heat exchange structure is started, the flow inlet pipe 16 is opened, so that the heat exchange structure 9 also exchanges heat, and the elevator group exchanges heat efficiency; wherein T is0Minimum value T0minIs 0.5; t is0In the range of 0.5-1.5.
The present application also discloses embodiments in which the heat exchanger 12 is a surface air cooler. Then the heat exchange structure 9 is also a surface cooler; the heat exchange structure 9 and the heat exchanger 12 jointly form a surface cooling structure, the surface cooling section of the surface cooling structure forms the heat exchanger 12, and the capillary tube radiation heat exchange tail end section of the surface cooling structure forms the heat exchange structure 9; all go on in inclosed combined type air-conditioning box in the processing procedure of this application air, this application carries out ingenious setting at fan subassembly 8 top with the capillary radiation heat transfer end of the cold structure of table, and divide the cold structure of table into capillary radiation heat transfer end section and the cold section of table, capillary radiation heat transfer end ware is miniature heat transfer device is heat transfer structure 9, the main objective is the heat dissipation heat of offsetting fan subassembly 8's motor and with the preliminary cooling of air and the problem that the guarantee trades season period heat exchanger efficiency low, make the temperature that the air got into the surface cooler lower more easily control, thereby can reduce the cold consumption of table and control more accurately. The utility model provides a capillary radiation heat transfer is terminal belongs to same cold source system with the cold section of table, the refrigerated water in the cold section of table shunts after the export of the cold section of table flows out, partly flow direction capillary radiation heat transfer end ware is interior, partly flow direction exit tube 15, wherein on the flow path of flow direction exit tube 15, and inlet tube 16 sets up one at control valve 11 with outlet tube 17, control valve 11 mainly is responsible for adjusting when actual air temperature changes, make entering capillary radiation heat transfer end system internal frozen water flow change adjustment through control valve 11 regulated flow, can be nimble the cold load temperature of initial cooling in the governing system, improve air outlet air temperature's stability, can not carry out especially obvious change because of external air change.
The application also discloses some embodiments, the radiation heat exchange structure is a capillary tube radiation heat exchange end device; fan subassembly 8 belongs to live equipment in this application, has the potential safety hazard of electric leakage, consequently chooses for use capillary radiation heat transfer end to cool down, avoids near fan subassembly 8 convection current to produce the comdenstion water and makes the fan trouble. The waste heat of the fan section can be eliminated by arranging the capillary tube radiation heat exchange tail end, so that the heat exchanger 12 is not influenced by the fan temperature rise waste heat, the indoor waste heat is accurately controlled, and the precision is improved. The waste heat of the fan component 8 is eliminated by mainly using the low-temperature freezing backwater of the surface cooler, the backwater temperature is higher than the conventional 12 ℃, the cold energy of the low-temperature freezing backwater is recycled, and the effect of saving energy consumption is achieved.
The application also discloses some embodiments, the heat exchange structure 9 is positioned above the fan assembly 8; this application is a circulation branch road of bypass on the refrigerated water exit tube of circulation purification unit surface cooling section, is connected to the motor top of fan, and the circulation of part low temperature refrigeration return water is recycled, absorbs the motor heat dissipation through the terminal radiation heat transfer of capillary radiation heat transfer, reduces the heat load that the fan temperature rise produced, makes the air carry out the primary cooling at composite section 2 simultaneously, reduces the difference in temperature at both ends around the surface cooler, reaches the effect of improving accuracy, practices thrift air conditioning system energy consumption. This application design capillary radiation heat transfer end ware is located the top of fan subassembly 8, the air current tissue of 2 inside compound sections of fan is mainly from mixing 1 horizontal flow direction filter segments in wind section, so the capillary radiation heat transfer end ware of top mainly cools down through radiation heat transfer, wherein can take place partial convection heat transfer, reach the effect of initial cooling through two kinds of heat exchanges, consequently very little to the influence of the amount of wind, the promotion of fan load consumption is less, reach energy-conserving effect.
The application also discloses some embodiments, and the air conditioning unit is used in an operating room.
The application also discloses some embodiments, the air conditioning unit comprises an air mixing section 1, a fan composite section 2, a filtering section 3, a surface cooling section 4, a humidifying section 5, an electric heating section 6 and an air outlet section 7 which are sequentially arranged in the air flow direction; the fan assembly 8 and the heat exchange structure 9 are both arranged on the fan composite section 2.
The application also discloses some embodiments, when the air conditioning unit still includes heat exchanger 12, heat exchanger 12 sets up in table cold section 4. This application utilizes the capillary radiation heat transfer end that the part refrigerated water in the heat exchanger 12 of circulation purification unit surface cooling section 4 provided to the fan top, and the control air is through the difference in temperature around the fan, makes the temperature control of surface cooler more accurate, absorbs fan assembly 8's motor heat dissipation capacity simultaneously, has offset the heat load that fan assembly 8 temperature rise produced, has practiced thrift air conditioning system's energy consumption.
The application air conditioning unit is a hospital operating room cryogenic air conditioning unit, wherein the air conditioning unit comprises the following functional sections: mix wind section 1, the compound section 2 of fan, high-efficient filter section 3, the cold section 4 of table, humidification section 5, reheat section, air-out section 7, its air conditioning unit contains following device: fresh air inlet, return air inlet, fan, capillary tube radiation heat exchange end device, high efficiency filter 10, surface cooler, electrode humidifier 13, electric heater 14. The fan composite section 2 is composed of two parts, the first part is a fan component 8 for ensuring the air volume and the air pressure, the second part is a capillary radiation heat exchange end device which primarily controls the temperature, namely a heat exchange structure 9, the surface cooler is not a common traditional coil but a capillary coil of a capillary structure, and the device is arranged in the mixing section in parallel with the air supply direction, and the two parts jointly form the fan composite section 2.
The fresh air and the return air are mixed in the air mixing section 1, then pressurized and supplied air through the fan composite section 2 of the unit, the supplied air is primarily cooled through a capillary tube radiation heat exchange end device, then the air is filtered through the high-efficiency filter 10, the secondary cooling is carried out on the filtered air through the surface air cooler to meet the indoor temperature requirement, the blown cold air enters the electrode humidifier 13 to adjust the humidity, and finally the cold air is accurately adjusted in temperature through the electric heater 14 and is sent out.
The compound section 2 of fan of this application cools down fan assembly 8's motor structure through heat transfer structure 9, can solve the poor condition of refrigeration stability that the fan temperature rise too high leads to. The load of the unit caused by self-heating of the fan affects the unit in actual conditions, the temperature rise of the fan assembly 8 is T0 in normal conditions, the capillary tube radiation heat exchange tail end is opened after the temperature rise of the fan assembly 8 exceeds a normal value for a certain time, the temperature sensor of the air mixing section 1 obtains the temperature T1, the temperature sensor is arranged at the outlet of the fan composite section 2 to obtain the temperature T3, the value of T3-T1 is calculated, and when T is not more than T, the temperature T is not less than T, the temperature T is not less than T, the temperature of the temperature T, the T is not less than T is obtained, the temperature T is not less than T, the temperature of the temperature T is not less than T, the T is obtained, the temperature of the T is obtained, the temperature T is not less than T is obtained, the temperature T is obtained, the temperature of the temperature T is not less than T is obtained, the temperature of the T is obtained, the temperature T, the temperature of the temperature T is not less than T is obtained, the temperature of the T is not less than T is obtained, the temperature of the temperature T, the temperature of the T, the temperature of the T is obtained, the temperature of the T, the temperature of the temperature0minWhen the heat exchanger is used, the flow inlet pipe 16 is closed, only the heat exchanger 12 is required to exchange heat, and when delta T is more than T0minWhen the heat exchange structure is started, the flow inlet pipe 16 is opened, so that the heat exchange structure 9 also exchanges heat, and the elevator group exchanges heat efficiency; wherein T is0Minimum value T0minIs 0.5; t is0The range of (A) is 0.5 to 1.5 ℃.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. An air conditioning assembly, comprising:
a fan assembly (8), the fan assembly (8) comprising a motor structure;
and the heat exchange structure (9), the heat exchange structure (9) comprises a radiation heat exchange structure, and the radiation heat exchange structure can perform radiation heat exchange with the motor structure so as to cool the motor structure.
2. Air conditioning unit according to claim 1, characterized in that it further comprises a heat exchanger (12), said heat exchanger (12) being connected in series with said heat exchange structure (9), the refrigerant in said heat exchanger (12) being able to enter said heat exchange structure (9).
3. Air conditioning assembly according to claim 2, further comprising an outlet pipe (15), said outlet pipe (15) being connected to the outlet of the heat exchanger (12); the outlet pipe (15) is used for guiding the refrigerant in the heat exchanger (12) to flow out; and the inlet of the heat exchange structure (9) is communicated with the side wall of the outlet pipe (15) through an inlet flow pipe (16).
4. Air conditioning assembly according to claim 3, further comprising an outlet duct (17), said outlet duct (17) communicating the outlet of said heat exchange structure (9) with the side wall of said outlet duct (15).
5. Air conditioning assembly according to claim 4, characterized in that it further comprises a control valve (11); the control valve (11) can control the on-off of the inflow pipe (16); and/or the control valve (11) can control the flow rate of the refrigerant in the inflow pipe (16).
6. Air conditioning assembly according to claim 5, wherein the control valve (11) is arranged on the outlet pipe (15) and the control valve (11) is located between the inlet pipe (16) and the outlet pipe (17).
7. Air conditioning unit according to claim 5, characterized in that when the control valve (11) is able to control the refrigerant flow rate inside the inlet pipe (16), the control valve (11) is able to control the refrigerant flow rate inside the inlet pipe (16) according to the ambient temperature.
8. Air conditioning assembly according to claim 2, wherein the heat exchanger (12) is a surface air cooler.
9. Air conditioning assembly according to claim 1, wherein said radiant heat exchange structure (9) is a capillary radiant heat exchanger end;
and/or the heat exchange structure (9) is positioned above the fan assembly (8);
and/or the air conditioning unit is used in an operating room.
10. The air conditioning unit as claimed in any one of claims 1 to 9, wherein the air conditioning unit comprises an air mixing section (1), a fan composite section (2), a filtering section (3), a surface cooling section (4), a humidifying section (5), an electric heating section (6) and an air outlet section (7) which are arranged in sequence in the direction of the air flow; the fan assembly (8) and the heat exchange structure (9) are both arranged on the fan composite section (2);
and/or when the air conditioning unit further comprises a heat exchanger (12), the heat exchanger (12) is arranged on the surface cooling section (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210081924.3A CN114353207B (en) | 2022-01-24 | 2022-01-24 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210081924.3A CN114353207B (en) | 2022-01-24 | 2022-01-24 | Air conditioning unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114353207A true CN114353207A (en) | 2022-04-15 |
| CN114353207B CN114353207B (en) | 2023-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210081924.3A Active CN114353207B (en) | 2022-01-24 | 2022-01-24 | Air conditioning unit |
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| Country | Link |
|---|---|
| CN (1) | CN114353207B (en) |
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| CN102213465A (en) * | 2010-04-07 | 2011-10-12 | 北京水木泽清能源科技有限公司 | Temperature-humidity separately-controlled central air conditioner of water source heat pump for ship |
| CN106678960A (en) * | 2016-11-15 | 2017-05-17 | 珠海格力电器股份有限公司 | Air conditioning equipment |
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| CN111237901A (en) * | 2020-01-20 | 2020-06-05 | 同济大学 | Purifying air-conditioning system for laminar flow operating room constant temperature air supply |
| CN113899025A (en) * | 2021-09-26 | 2022-01-07 | 珠海格力电器股份有限公司 | Heat recovery air treatment system |
-
2022
- 2022-01-24 CN CN202210081924.3A patent/CN114353207B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0269282A2 (en) * | 1986-10-30 | 1988-06-01 | Kabushiki Kaisha Toshiba | Air conditioner |
| JPH05223280A (en) * | 1992-02-12 | 1993-08-31 | Hitachi Ltd | Air cleaner |
| JP2009174746A (en) * | 2008-01-23 | 2009-08-06 | Shinryo Corp | Air supply temperature control system for clean room |
| CN101382321A (en) * | 2008-10-23 | 2009-03-11 | 上海交通大学 | Geothermal heat pump air conditioning system for file storeroom based on radiating terminal |
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| CN206593283U (en) * | 2017-04-04 | 2017-10-27 | 巴科尔环境系统（佛山）有限公司 | The cold furred ceiling unit of high efficient radiation |
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| CN111237901A (en) * | 2020-01-20 | 2020-06-05 | 同济大学 | Purifying air-conditioning system for laminar flow operating room constant temperature air supply |
| CN113899025A (en) * | 2021-09-26 | 2022-01-07 | 珠海格力电器股份有限公司 | Heat recovery air treatment system |
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|---|---|
| CN114353207B (en) | 2023-04-11 |
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