CN112728695A - Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity - Google Patents
Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity Download PDFInfo
- Publication number
- CN112728695A CN112728695A CN202110168831.XA CN202110168831A CN112728695A CN 112728695 A CN112728695 A CN 112728695A CN 202110168831 A CN202110168831 A CN 202110168831A CN 112728695 A CN112728695 A CN 112728695A
- Authority
- CN
- China
- Prior art keywords
- air
- heat exchanger
- air supply
- evaporator
- variable frequency
- 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.)
- Withdrawn
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 15
- 230000001276 controlling effect Effects 0.000 claims abstract description 22
- 238000003303 reheating Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 21
- 230000005494 condensation Effects 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity, which comprises a variable frequency compressor, a first heat exchanger, a second heat exchanger, a water-cooled condenser, an electronic expansion valve and an evaporator, wherein the variable frequency compressor, the first heat exchanger, the second heat exchanger, the water-cooled condenser, the electronic expansion valve and the evaporator are sequentially connected into a circulation loop through pipelines; the first heat exchanger is connected with an outlet of the variable frequency compressor, and the evaporator is connected with an inlet of the variable frequency compressor; the evaporator and the first heat exchanger are sequentially arranged in the air supply channel along the direction of the air inlet towards the air supply outlet, and a reheating fan with adjustable air speed is arranged between the first heat exchanger and the air supply outlet and used for regulating and controlling the air quantity passing through the first heat exchanger; the variable frequency compressor, the second heat exchanger and the water-cooled condenser are sequentially arranged in the air exhaust channel along the direction of the air return port towards the air exhaust port, and an electric two-way valve is arranged on a circulating cooling pipeline of the water-cooled condenser. The device can accurately control the temperature and the humidity of air supply, effectively reduce the energy consumption of the outside to the system, improve the working efficiency of the refrigerating system, fully utilize the condensation heat and achieve the aim of energy conservation.
Description
Technical Field
The invention relates to the technical field of air conditioning and energy utilization, in particular to an energy-saving air conditioning device capable of accurately controlling the temperature and humidity of air supply.
Background
In prior art, the condensation heat of air conditioning unit can reach 1.15 ~ 1.3 times of refrigerating output usually, and a large amount of condensation heat relies on outdoor high temperature air to condense it, and the condensation effect is not good, perhaps external cold source is handled the condensation heat, need consume extra energy, and this part heat can be lost in vain simultaneously, causes great energy waste. If the condensation heat emitted by the air conditioning unit is recycled and the characteristic that the indoor exhaust air temperature is lower in summer is utilized, the condensation heat is used as a main cold and heat source of the unit, the consumption of the condensation heat to the energy can be effectively reduced, and the energy-saving measure for changing waste into valuable is provided. The traditional fresh air dehumidifier mainly uses the condensation heat to reheat the fresh air after cooling and dehumidifying, and although the problem of huge energy consumption caused by electric heating is solved, the temperature of air supply cannot be accurately controlled by adopting condensation reheating, and the requirements of different regions and time cannot be met. Therefore, a new air conditioning and refrigeration system solution is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide an energy-saving air conditioning device for accurately controlling the temperature and the humidity of air supply, which can fully utilize condensation heat to carry out air supply reheating control under the refrigeration working condition so as to achieve the function of accurately adjusting the temperature and the humidity of the air supply, can reduce the energy consumption of the outside on a system through air exhaust heat dissipation, and can improve the operation efficiency of the system through reducing the condensation temperature so as to achieve the aim of saving energy.
In order to realize the purpose of the invention, the adopted technical scheme is as follows: an energy-saving air conditioning device capable of accurately controlling the temperature and the humidity of air supply comprises an air supply channel and an air exhaust channel, wherein an air inlet is formed in one end, positioned outdoors, of the air supply channel, and an air supply outlet is formed in one end, positioned indoors, of the air supply channel; one end of the air exhaust channel positioned indoors is an air return inlet, and the other end positioned outdoors is an air exhaust outlet;
the system also comprises a variable frequency compressor, a first heat exchanger, a second heat exchanger, a water-cooled condenser, an electronic expansion valve and an evaporator which are sequentially connected into a circulating loop through pipelines; wherein,
the first heat exchanger is connected with an outlet of the variable frequency compressor, and the evaporator is connected with an inlet of the variable frequency compressor;
the evaporator and the first heat exchanger are sequentially arranged in the air supply channel along the direction of the air inlet towards the air supply outlet, and a reheating fan with adjustable air speed is arranged between the first heat exchanger and the air supply outlet and is used for regulating and controlling the air quantity GZR passing through the first heat exchanger;
the variable frequency compressor, the second heat exchanger and the water-cooled condenser are sequentially arranged in the air exhaust channel along the direction of the air return port towards the air exhaust port, and an electric two-way valve is arranged on a circulating cooling pipeline of the water-cooled condenser.
Further, the windward area FY1 of the first heat exchanger is smaller than the windward area FY2 of the evaporator. The first heat exchanger windward area is smaller than the evaporator windward area, the first heat exchanger windward area is combined with the reheating fan for application, the air quantity passing through the first heat exchanger can be regulated and controlled by controlling the rotating speed of the reheating fan, and the residual air quantity passes through the first heat exchanger by-pass, so that the air supply temperature passing through the air supply opening is controlled more accurately.
According to the energy-saving air conditioning device capable of accurately controlling the temperature and the humidity of the supplied air, the second heat exchanger condenses the refrigerant by utilizing the indoor return air in the air exhaust channel, the water-cooled condenser is externally connected with chilled water or cooling water to process the residual condensation heat, and the condensation temperature is adjusted by controlling the electric two-way valve. In the air supply passageway, outdoor new trend is through evaporimeter cooling dehumidification, reach required moisture content value, then through first heat exchanger, the air supply temperature risees, send into indoor behind the mixed control air supply temperature of bypass air supply, wherein, the evaporimeter that is located the air supply passageway is responsible for cooling down the dehumidification to the air supply, through control frequency conversion variable frequency compressor rotational speed and expansion valve step number, but accurate control air supply humidity, low temperature air after the first heat exchanger is through consuming some refrigerating system's condensation heat and reheat, improve the air supply temperature, it passes through the amount of wind of first heat exchanger to recombine reheat fan through the change, adjust the mixing ratio of reheat and bypass ventilation, but the temperature of accurate control air supply.
Compared with the prior art, the invention has the technical effects that: the temperature and the humidity of air supply can be accurately controlled, the energy consumption of the outside to the system is effectively reduced, the working efficiency of a refrigerating system is improved, and meanwhile, the condensation heat is fully utilized to achieve the purpose of energy conservation.
Drawings
Fig. 1 is a schematic structural diagram of an energy-saving air conditioning device for accurately controlling the temperature and humidity of supplied air according to the present invention. The reference numbers illustrate:
ds, inlet air moisture content; ts, air supply temperature; tc, condensation temperature; te, evaporation temperature; FY1, the windward area of the first heat exchanger; FY2, the windward area of the evaporator; GZR, air volume passing through the first heat exchanger;
1. a variable frequency compressor; 2. a first heat exchanger; 3. a second heat exchanger; 4. a water-cooled condenser; 5. an electronic expansion valve; 6. an evaporator; 7. a reheat fan; 8. an electric two-way valve.
Detailed Description
The invention is described in more detail below with reference to the following examples:
referring to fig. 1, except for the lead arrows of the reference numerals, the thin arrows indicate the flow direction of the coagulant in the circulation loop, and the thick arrows indicate the air flow direction, the energy-saving air conditioning device capable of accurately controlling the temperature and humidity of the supplied air of the embodiment comprises an air supply channel and an air exhaust channel, wherein the air supply channel is positioned at the outdoor end and is provided with an air inlet, and the air supply channel is positioned at the indoor end and is provided with an air supply outlet; one end of the air exhaust channel positioned indoors is an air return inlet, and the other end positioned outdoors is an air exhaust outlet;
the system also comprises a variable frequency compressor 1, a first heat exchanger 2, a second heat exchanger 3, a water-cooled condenser 4, an electronic expansion valve 5 and an evaporator 6 which are sequentially connected into a circulating loop through pipelines; wherein,
the first heat exchanger 2 is connected with an outlet of the variable frequency compressor 1, and the evaporator 6 is connected with an inlet of the variable frequency compressor 1;
the evaporator 6 and the first heat exchanger 2 are sequentially arranged in the air supply channel along the direction from the air inlet to the air supply outlet, and a reheating fan 7 with adjustable air speed is arranged between the first heat exchanger 2 and the air supply outlet and is used for regulating and controlling the air quantity GZR passing through the first heat exchanger 2;
the variable frequency compressor 1, the second heat exchanger 3 and the water-cooled condenser 4 are sequentially arranged in an air exhaust channel along the direction of an air return port towards an air exhaust port, and an electric two-way valve 8 is arranged on a circulating cooling pipeline of the water-cooled condenser 4.
Specifically, the windward area FY1 of the first heat exchanger 2 is smaller than the windward area FY2 of the evaporator 6. The windward area of the first heat exchanger 2 is smaller than that of the evaporator 6, the first heat exchanger is combined with the reheating fan 7, the air quantity passing through the first heat exchanger 2 can be regulated and controlled by controlling the rotating speed of the reheating fan 7, and the residual air quantity passes by-pass through the first heat exchanger 2, so that the air supply temperature passing through the air supply opening is controlled more accurately.
During the use process of the summer refrigeration mode, outdoor fresh air is cooled and dehumidified by the evaporator 6 in the air supply channel to reach the set air outlet moisture content Ds, then passes through the first heat exchanger 2, the air supply temperature is raised, and the air is mixed with the dehumidified air which is not subjected to heat exchange by the first heat exchanger 2 in the bypass air supply air inlet channel and then is sent into the room; indoor exhaust air is in the exhaust passage, and condensation heat is taken away through the second heat exchanger 3, so that the air temperature is raised and the air is discharged out of the room. The condensation heat of the system is taken away by utilizing the exhaust air with lower indoor temperature, the energy consumption of the outside to the system is reduced, and the purpose of energy conservation is achieved. The water-cooled condenser 4 is externally connected with chilled water or cooling water to process residual condensation heat, and the condensation temperature Tc of the unit can be adjusted by controlling the electric two-way valve 8, so that the working efficiency of the refrigeration system is improved.
The principle of the embodiment for accurately controlling the moisture content Ds of the supplied air is as follows: the evaporator 6 is loaded with low-temperature refrigerant, and when air passes through the evaporator 6, heat exchange is generated, so that the temperature is reduced, and simultaneously water in the air is analyzed. Because the low-temperature refrigerants with different temperatures have different cooling and dehumidifying capacities on air in the evaporator 6, when the air supply moisture content Ds value needs to be adjusted, the variable frequency compressor 1 and the electronic expansion valve 5 can be adjusted according to the set air supply moisture content Ds value, so that the evaporation temperature Te in the evaporator 6 is adjusted, and the effect of controlling the air supply moisture content Ds is further achieved.
The principle of the present embodiment for accurately controlling the blowing air temperature Ts: because the windward area FY1 of the first heat exchanger 2 is smaller than the windward area FY2 of the evaporator 6, part of the air subjected to temperature reduction and dehumidification exchanges heat with the first heat exchanger 2, the other part of the air is bypassed, and after the first heat exchanger 2 is connected with the reheating fan 7, the air volume GZR passing through the first heat exchanger 2 can be regulated and controlled by controlling the rotating speed of the reheating fan 7. When the air supply temperature Ts needs to be adjusted, the reheating fan 7 can adjust the rotating speed according to the height of the air supply temperature Ts, the air quantity GZR reheated after passing through the first heat exchanger 2 is increased or decreased, and the air quantity is mixed with bypass air supply in different proportions, so that the effect of controlling the air supply temperature Ts is achieved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Claims (2)
1. An energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity comprises an air supply channel and an air exhaust channel, wherein the end, positioned outdoors, of the air supply channel is an air inlet, the end, positioned indoors, of the air supply channel is an air supply outlet, the end, positioned indoors, of the air exhaust channel is an air return inlet, and the end, positioned outdoors, of the air exhaust channel is an air exhaust outlet;
the method is characterized in that: the system also comprises a variable frequency compressor (1), a first heat exchanger (2), a second heat exchanger (3), a water-cooled condenser (4), an electronic expansion valve (5) and an evaporator (6) which are sequentially connected into a circulating loop through pipelines; wherein,
the first heat exchanger (2) is connected with an outlet of the variable frequency compressor (1), and the evaporator (6) is connected with an inlet of the variable frequency compressor (1);
the evaporator (6) and the first heat exchanger (2) are sequentially arranged in the air supply channel along the direction of the air inlet towards the air supply outlet, and a reheating fan (7) with adjustable air speed is arranged between the first heat exchanger (2) and the air supply outlet and is used for regulating and controlling the air quantity GZR passing through the first heat exchanger (2);
frequency conversion compressor (1), second heat exchanger (3) and water cooled condenser (4) set gradually in the passageway of airing exhaust along the direction of return air inlet towards the air exit, be equipped with electronic two-way valve (8) on the circulative cooling pipeline of water cooled condenser (4).
2. The energy-saving air conditioning apparatus according to claim 1, wherein: the windward area FY1 of the first heat exchanger (2) is smaller than the windward area FY2 of the evaporator (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168831.XA CN112728695A (en) | 2021-02-07 | 2021-02-07 | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168831.XA CN112728695A (en) | 2021-02-07 | 2021-02-07 | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728695A true CN112728695A (en) | 2021-04-30 |
Family
ID=75596386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110168831.XA Withdrawn CN112728695A (en) | 2021-02-07 | 2021-02-07 | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728695A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777219A (en) * | 2022-05-12 | 2022-07-22 | 江苏晋成空调工程有限公司 | Air handling unit with adjustable cooling coil |
| CN116972462A (en) * | 2023-09-25 | 2023-10-31 | 格瑞海思人居环境科技(江苏)有限公司 | Heat pump type solution deep dehumidification integrated unit |
-
2021
- 2021-02-07 CN CN202110168831.XA patent/CN112728695A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777219A (en) * | 2022-05-12 | 2022-07-22 | 江苏晋成空调工程有限公司 | Air handling unit with adjustable cooling coil |
| CN114777219B (en) * | 2022-05-12 | 2023-10-27 | 江苏晋成空调工程有限公司 | Air treatment unit with adjustable cooling coil |
| CN116972462A (en) * | 2023-09-25 | 2023-10-31 | 格瑞海思人居环境科技(江苏)有限公司 | Heat pump type solution deep dehumidification integrated unit |
| CN116972462B (en) * | 2023-09-25 | 2024-01-05 | 格瑞海思人居环境科技(江苏)有限公司 | Heat pump type solution deep dehumidification integrated unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111306646B (en) | Control method of fresh air conditioner | |
| CN201149335Y (en) | Arefaction air conditioner capable of adjusting temperature | |
| CN210374155U (en) | Reheating and dehumidifying integrated refrigerating system | |
| CN205957353U (en) | Air treatment device | |
| CN112728695A (en) | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity | |
| WO2020244207A1 (en) | Air conditioning system | |
| CN216281972U (en) | Air conditioning unit | |
| CN104566720A (en) | Precision machine room air condition compressor fluorine pump refrigerating cycle system | |
| CN110749018A (en) | Single-machine two-stage compression middle air exhaust heat recovery fresh air processing device | |
| CN100451467C (en) | Combined method and device for treating air | |
| CN209763409U (en) | Fresh air fan capable of adjusting temperature in winter and summer | |
| CN114110884B (en) | New fan, control method thereof and computer readable storage medium | |
| CN215216584U (en) | Energy-saving air conditioning device capable of accurately controlling air supply temperature and humidity | |
| CN113864920B (en) | Dehumidification heat pump air conditioning system | |
| CN107806675B (en) | Four-season type air-cooled dehumidification system and control method thereof | |
| JP3614775B2 (en) | Heat pump air conditioner | |
| CN213955487U (en) | Dehumidifying device capable of changing air quantity and refrigerant flow temperature regulation | |
| CN212805991U (en) | Air conditioning unit surface cooling subsection energy-saving control system | |
| CN212481848U (en) | Multi-heat-source self-adaptive material drying room | |
| CN210921994U (en) | Multifunctional heat pump drying system | |
| CN102226557A (en) | Waste cold utilization based air-conditioning system capable of independent temperature-humidity control | |
| CN105890078A (en) | Constant-temperature dehumidifying air-energy heat-pump drying fresh air conditioner | |
| CN115388480B (en) | Air conditioning unit and control method thereof | |
| CN204404425U (en) | A kind of accurate air conditioner in machine room compressor fluorine pump cooling cycle system | |
| CN214039023U (en) | Air conditioning system with low-load dehumidification function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210430 |