WO2023287308A1 - Vacuum air conditioner - Google Patents

Vacuum air conditioner Download PDF

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Publication number
WO2023287308A1
WO2023287308A1 PCT/OM2021/050007 OM2021050007W WO2023287308A1 WO 2023287308 A1 WO2023287308 A1 WO 2023287308A1 OM 2021050007 W OM2021050007 W OM 2021050007W WO 2023287308 A1 WO2023287308 A1 WO 2023287308A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
tank
air conditioner
air
vacuum
Prior art date
Application number
PCT/OM2021/050007
Other languages
French (fr)
Inventor
Ali AL- HASHMI
Humaid AL HANAI
Original Assignee
Al Hashmi Ali
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 Al Hashmi Ali filed Critical Al Hashmi Ali
Priority to PCT/OM2021/050007 priority Critical patent/WO2023287308A1/en
Publication of WO2023287308A1 publication Critical patent/WO2023287308A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F5/0021—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F2005/0025—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using heat exchange fluid storage tanks

Definitions

  • HVAC Heating , Ventilation and Air conditioning
  • the Air conditioning systems currently being used in the world uses refrigerant gas as the working medium. Most of the refrigerants being used in Air condition systems are hazardous to the environment. These refrigerants are considered as a factor contributing towards Ozone layer depletion. Also the current Air Conditioning systems use a compressor to drive the refrigerant through the system which consumes larger amount of energy and producing noise. The noises of the compressors contribute towards noise pollution. Further the normal air conditioning system equipped with a condenser and the heat of the refrigerant is rejected to the atmosphere through condenser. This process is heating up the surrounding environment while cooling the enclosed space thereby increasing the heat of surrounding environment. Therefore to avoid negative impacts of the currently used Compressor driven Air conditioning plants; the new invention of vacuum Air Conditioning system is invented. This system is considered environment friendly and simpler.
  • Vacuum air conditioner is air cooling system which uses water instead of refrigerant gas.
  • the main components of the system are modified vacuum pump, sealed thermally insulated water tank, heat pipes, evaporator coils and fan.
  • the principle used in the system is vaporizing of water at lower temperature under reduced pressure by absorbing energy from water itself and thereby cooling the remaining water.
  • the vacuum pump is used to lower the pressure inside the sealed thermally isolated water tank below atmospheric pressure by creating a vacuum inside the tank. Once a vacuum is created inside sealed water tank sudden pressure drop will cause vaporizing of water inside the tank within seconds and then cool down remaining water, after molecules lose their energy through ebullition and evaporation. This action will bring down the water temperature below freezing point 0C.
  • the water in the tank is mixed with glycol or any other anti freeze agent to prevent freezing of water in order to keep water as liquid.
  • the heat pipes are submerged in water inside the tank and run through the evaporator. Once the water inside the tank is cooled, heat pipes are much cooled and thereby evaporator coils will be very cool.
  • the fan blows the air through the evaporator coil.
  • the air being blown through evaporator coil heat pipes will absorb the heat of flowing air thereby cooling the air blown through the evaporator. This cool air will be directed to the room which needs to be cooled.
  • Unlike in brine cooling system there is no necessity of pumps or pipes to create flow through evaporator as heat pipes are directly cooled by the water inside the seal tank. Therefore the system is free from flowing liquid and water will be remained inside the sealed tank.
  • the invention of vacuum air conditioner will solve the technical problem as indicated below.
  • the invention uses only fresh water mixed with antifreeze. This also stored in a seal compartment and not release to the environment until the completion of life time.
  • the invention does not use a compressor and instead use a vacuum pump which has a much lower noise than a compressor.
  • the invention does not have a condenser like in conventional AC system. Therefore the issue of heat rejection to the adjacent environment will be solved.
  • the vacuum air conditioner will be free of refrigerant gas, less noisy and will not heat up the surrounding environment. Therefore it is totally an environment friendly machine. Also not required to lay piping system between indoor unit and outdoor unit as new system only consist with indoor unit. Further vacuum Air conditioner performance will remain high even during hot summer.
  • Vacuum pump is powered by domestic power supply. Main purpose of vacuum pump is to create sufficient low pressure inside the sealed thermally isolated tank to cool down the water. The pump will stop automatically through control circuit once desired low water temperature is reached. Once the temperature reaches set upper value pump will automatically start through the control system. Also vacuum pump will be set to stop once the room temperature reaches desired set value.
  • control module The function of the control module is to monitor operating parameters through set of sensors/transducers and send signals for activation and deactivation of vacuum pump and blower.
  • the user will be able to set desired room temperature and blower functions through input/output module connected to control module.
  • the pipe will be used to direct small amount of cooled air to vacuum pump chamber for the purpose of cooling vacuum pump and the chamber.
  • Sealed thermally isolated water tank is one of the major components of the design. This tank will be fully sealed and air tight. Also, it will be thermally sealed to ensure no heat transfer between the tank and surrounding. Heat pipes inside the tank will run through cooling coil.
  • Heat pipes are one of the major components of the air conditioner. Once water inside the sealed tank reaches very low temperature, heat pipes will be cooled and cooling will be transferred to evaporator through set of heat pipes. When blower blows air through the very cooled heat pipes, air will transfer heat to heat pipes and resultant cool air will flow out.
  • Breather valves is a protection device which is typically mounted on a nozzle opening on the top of a fixed roof atmospheric storage tank. Its primary purpose is to protect the tank against rupturing or imploding. Without an opening or a controlled opening, a fixed roof atmospheric tank would rupture under increasing pressure caused by pumping liquid into the tank or as a result of vapor pressure changes caused by severe thermal changes. Imploding, or the collapsing of a tank, occurs during the pumping out procedure or thermal changes. As the liquid level lowers, the vapor space pressure is reduced to below atmospheric pressure. This vacuum condition must be controlled by allowing atmospheric air to flow into the tank. In short, the tank needs to breathe in order to eliminate the possibility of rupturing or imploding.
  • Water inside Water tank will decrease due to the thermal boiling under atmospheric pressure.
  • filling point is designed to overcome water decreasing inside the tank.
  • Filling point is sealed to avoid any air escaping from the tank.
  • evaporator The purpose of evaporator is to cool the air blown through it.
  • the evaporator contains several rows of heat pipes and aluminum fins. Evaporator is designed to achieve maximum heat exchanging with the surrounding.
  • the blower is a normal blower being used in Air Conditioners and purpose is to blow sufficient air to the room through evaporator.
  • the ventilation air discharge is provided to exhaust the small amount of cooling air supplied to vacuum pump chamber. This air expected to be closer to the room temperature.
  • the main components driving the invention are the vacuum pump(l) and sealed thermally isolated water tank (5). Sealed water tank (5) is manufactured 100% air tight and thermally sealed to prevent energy transfer between inside the tank and outside environment.
  • the heat pipes (6) normally absorb the coldness of the water and quickly transfer that coldness through the cooling coil (9).
  • Vacuum pump (1) is connected to domestic power supply. Once the machine starts vacuum pump starts and sucks the air inside the sealed water tank (14) creating sudden vacuum inside the sealed tank. Once vacuum is created the temperature of the water inside the tank will decrease suddenly to very low level as it is expanding adiabatically into gas state. This happens due to vacuuming gas inside the tank at faster rate and not transferring heat into the tank from atmosphere. The water inside the tank is mixed with antifreeze to prevent icing. Once the water becomes cold heat pipes inside the tank will become very cold and that coldness quickly will be transferred to the heat pipes running through the cooling coil.
  • control unit will sense the temperature through sensor and will stop vacuum pump. Also an arrangement is being made to stop vacuum pump once fresh water inside the sealed tank cooled to predetermined set temperature.
  • Cooling pipe for vacuum pump chamber (3) will send small amount of cooled air from the blower to the vacuum pump chamber in order to cool vacuum pump. This air will be discharge to the room through ventilation air discharge (13). The accumulated water in the tray below the evaporator will be discharged through water drain (12)
  • Control module is designed to control all functions of the vacuum air conditioner such as automatic start/stop of vacuum pump and blower, control and sense the pressure/temp inside water tank, sense and control temperature in the air conditioned room, control breather valve and activation of low water level alarm.
  • the proposed invention can be modified and use in refrigeration systems as well
  • vacuum air conditioner is simple and versatile machine to cool the internal spaces such as houses and offices.
  • the outside appearance will be exactly similar to Package Air conditioners currently being used.
  • Vacuum air conditioner can be manufactured in mass scale after introducing to the market.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The air conditioning systems currently being used to cool houses, offices and other enclosed spaces are detrimental to the environment due to the use of harmful refrigerant, noisy compressors and heat rejection by condensers to adjacent environment. Moreover, current AC systems face the challenge of sufficiently cooling the condensers in hot and dry weather and thereby not being able to maintain desired room temperatures. The new invention, Vacuum air conditioner uses water instead of refrigerant gas, compressor is replaced by a vacuum pump and there is no condenser. The principle used in the system is vaporizing of water at lower temperature under reduced pressure by absorbing energy from water itself and thereby cooling the remaining water inside the sealed thermally isolated tank and cooling the air by using heat pipes submerged in the cold water. The system will be efficient in the hot and dry summer same as in the cooler seasons. The vacuum air conditioner will be low cost, low maintenance machine which will provide a better cost effective air conditioning solution throughout the year. Therefore new invention will be an attractive air conditioning solution compared to current AC systems available in the market.

Description

Description
Title of Invention : Vacuum Air Conditioner
[1]
Technical Field
[2 ] Technical field of this invention is Heating , Ventilation and Air conditioning(HVAC).
Background Art
[3] The Air conditioning systems currently being used in the world uses refrigerant gas as the working medium. Most of the refrigerants being used in Air condition systems are hazardous to the environment. These refrigerants are considered as a factor contributing towards Ozone layer depletion. Also the current Air Conditioning systems use a compressor to drive the refrigerant through the system which consumes larger amount of energy and producing noise. The noises of the compressors contribute towards noise pollution. Further the normal air conditioning system equipped with a condenser and the heat of the refrigerant is rejected to the atmosphere through condenser. This process is heating up the surrounding environment while cooling the enclosed space thereby increasing the heat of surrounding environment. Therefore to avoid negative impacts of the currently used Compressor driven Air conditioning plants; the new invention of vacuum Air Conditioning system is invented. This system is considered environment friendly and simpler.
Summary of Invention
[4] Vacuum air conditioner is air cooling system which uses water instead of refrigerant gas. The main components of the system are modified vacuum pump, sealed thermally insulated water tank, heat pipes, evaporator coils and fan. The principle used in the system is vaporizing of water at lower temperature under reduced pressure by absorbing energy from water itself and thereby cooling the remaining water. The vacuum pump is used to lower the pressure inside the sealed thermally isolated water tank below atmospheric pressure by creating a vacuum inside the tank. Once a vacuum is created inside sealed water tank sudden pressure drop will cause vaporizing of water inside the tank within seconds and then cool down remaining water, after molecules lose their energy through ebullition and evaporation. This action will bring down the water temperature below freezing point 0C. The water in the tank is mixed with glycol or any other anti freeze agent to prevent freezing of water in order to keep water as liquid. The heat pipes are submerged in water inside the tank and run through the evaporator. Once the water inside the tank is cooled, heat pipes are much cooled and thereby evaporator coils will be very cool. The fan blows the air through the evaporator coil. The air being blown through evaporator coil heat pipes will absorb the heat of flowing air thereby cooling the air blown through the evaporator. This cool air will be directed to the room which needs to be cooled. Unlike in brine cooling system there is no necessity of pumps or pipes to create flow through evaporator as heat pipes are directly cooled by the water inside the seal tank. Therefore the system is free from flowing liquid and water will be remained inside the sealed tank.
Technical Problem
[5] The air conditioning systems being used in the world are detrimental to the environment due to following. a. Harmful refrigerant are being used in the systems. Release of refrigerant to the environment is very common due to system leaks and while conducting repairs. b. Systems are equipped with a compressor which produces excessive noise. c. Systems are equipped with condensers which emit heat to the surrounding environment.
Apart from environmental impact, current AC systems face the challenge of cooling the condensers in hot and dry weather. As the outside temperatures goes up dramatically during hot summer’s air conditioning effect inside the room will drastically come down due to poor cooling of condenser.
Solution to Problem
[6] The invention of vacuum air conditioner will solve the technical problem as indicated below. a. The invention uses only fresh water mixed with antifreeze. This also stored in a seal compartment and not release to the environment until the completion of life time. b. The invention does not use a compressor and instead use a vacuum pump which has a much lower noise than a compressor. c. The invention does not have a condenser like in conventional AC system. Therefore the issue of heat rejection to the adjacent environment will be solved.
Apart from above as the system cooling does not depend on the external cooling of a condenser, new invention will be versatile to use in countries which are experiencing very hot and dry summer seasons.
Advantageous Effects of Invention
[7] The vacuum air conditioner will be free of refrigerant gas, less noisy and will not heat up the surrounding environment. Therefore it is totally an environment friendly machine. Also not required to lay piping system between indoor unit and outdoor unit as new system only consist with indoor unit. Further vacuum Air conditioner performance will remain high even during hot summer.
Brief Description of Drawings
[8] The attached drawing shows the major components of the vacuum air conditioner.
1. Vacuum pump
Vacuum pump is powered by domestic power supply. Main purpose of vacuum pump is to create sufficient low pressure inside the sealed thermally isolated tank to cool down the water. The pump will stop automatically through control circuit once desired low water temperature is reached. Once the temperature reaches set upper value pump will automatically start through the control system. Also vacuum pump will be set to stop once the room temperature reaches desired set value.
2. Control module
The function of the control module is to monitor operating parameters through set of sensors/transducers and send signals for activation and deactivation of vacuum pump and blower. The user will be able to set desired room temperature and blower functions through input/output module connected to control module.
3. Cooling pipe for pump chamber.
The pipe will be used to direct small amount of cooled air to vacuum pump chamber for the purpose of cooling vacuum pump and the chamber.
4. Drier.
There is a chance to enter water vapor to vacuum pump when water vaporizes under low pressure. Purpose of the drier is to absorb any water vapor.
5. Sealed thermally isolated water tank is one of the major components of the design. This tank will be fully sealed and air tight. Also, it will be thermally sealed to ensure no heat transfer between the tank and surrounding. Heat pipes inside the tank will run through cooling coil.
6. Heat pipes
Heat pipes are one of the major components of the air conditioner. Once water inside the sealed tank reaches very low temperature, heat pipes will be cooled and cooling will be transferred to evaporator through set of heat pipes. When blower blows air through the very cooled heat pipes, air will transfer heat to heat pipes and resultant cool air will flow out.
7. Automatic breather valve
Breather valves is a protection device which is typically mounted on a nozzle opening on the top of a fixed roof atmospheric storage tank. Its primary purpose is to protect the tank against rupturing or imploding. Without an opening or a controlled opening, a fixed roof atmospheric tank would rupture under increasing pressure caused by pumping liquid into the tank or as a result of vapor pressure changes caused by severe thermal changes. Imploding, or the collapsing of a tank, occurs during the pumping out procedure or thermal changes. As the liquid level lowers, the vapor space pressure is reduced to below atmospheric pressure. This vacuum condition must be controlled by allowing atmospheric air to flow into the tank. In short, the tank needs to breathe in order to eliminate the possibility of rupturing or imploding.
8. Filling Point.
Water inside Water tank will decrease due to the thermal boiling under atmospheric pressure. To maintain water level inside the tanks, filling point is designed to overcome water decreasing inside the tank. Filling point is sealed to avoid any air escaping from the tank.
9. Evaporator.
The purpose of evaporator is to cool the air blown through it. The evaporator contains several rows of heat pipes and aluminum fins. Evaporator is designed to achieve maximum heat exchanging with the surrounding.
10. Blower
The blower is a normal blower being used in Air Conditioners and purpose is to blow sufficient air to the room through evaporator.
11. Air suction openings.
These openings designed to draw maximum air from surrounding to the evaporator. Those openings provided with dust filters to remove any impurities before entering evaporator.
12. Water Drain.
Once the air is blown through the evaporator, air loses its temperature; excess water will be subjected to condensation and accumulate under the evaporator. Water drain is provided to push the water out from the air conditioner.
13. Ventilation air discharge.
The ventilation air discharge is provided to exhaust the small amount of cooling air supplied to vacuum pump chamber. This air expected to be closer to the room temperature.
Fig.1
[1] [Fig.9]
Description of Embodiments
[10] General lay out of the invention is shown in the figure. The main components driving the invention are the vacuum pump(l) and sealed thermally isolated water tank (5). Sealed water tank (5) is manufactured 100% air tight and thermally sealed to prevent energy transfer between inside the tank and outside environment. The heat pipes (6) normally absorb the coldness of the water and quickly transfer that coldness through the cooling coil (9).
Vacuum pump (1) is connected to domestic power supply. Once the machine starts vacuum pump starts and sucks the air inside the sealed water tank (14) creating sudden vacuum inside the sealed tank. Once vacuum is created the temperature of the water inside the tank will decrease suddenly to very low level as it is expanding adiabatically into gas state. This happens due to vacuuming gas inside the tank at faster rate and not transferring heat into the tank from atmosphere. The water inside the tank is mixed with antifreeze to prevent icing. Once the water becomes cold heat pipes inside the tank will become very cold and that coldness quickly will be transferred to the heat pipes running through the cooling coil.
As soon as the vacuum pump starts, the blower (10) will start automatically through control system. Once the heat pipes inside cooling coil becomes cold, the air being blown through the cooling coil will reject its heat in to the heat pipes of cooling coil and become cool. This cool air will be directed to the room through cool air discharge to cool the room. Once desired set room temperature is reached, control unit will sense the temperature through sensor and will stop vacuum pump. Also an arrangement is being made to stop vacuum pump once fresh water inside the sealed tank cooled to predetermined set temperature.
Cooling pipe for vacuum pump chamber (3) will send small amount of cooled air from the blower to the vacuum pump chamber in order to cool vacuum pump. This air will be discharge to the room through ventilation air discharge (13). The accumulated water in the tray below the evaporator will be discharged through water drain (12)
Control module is designed to control all functions of the vacuum air conditioner such as automatic start/stop of vacuum pump and blower, control and sense the pressure/temp inside water tank, sense and control temperature in the air conditioned room, control breather valve and activation of low water level alarm.
The proposed invention can be modified and use in refrigeration systems as well
Examples
[2]
Industrial Applicability
[11] The invention, vacuum air conditioner is simple and versatile machine to cool the internal spaces such as houses and offices. The outside appearance will be exactly similar to Package Air conditioners currently being used. Vacuum air conditioner can be manufactured in mass scale after introducing to the market.
Initial cost of the plant expected to be much lower than the conventional Air condition systems once mass scale production commenced. Main cost saving will be achieved due to absence of outdoor unit.
Maintenance cost of the vacuum air conditioner is expected to be low compared with conventional air conditioner mainly due to the absence of refrigerant gas, compressor and condenser. Reference Signs List
[12]
Reference to Deposited Biological Material
[13]
Sequence Listing Free Text
[14]
Citation List
[15]
Patent Literature
[16]PTL1:
Non Patent Literature
[17]NPL1:

Claims

Claims
[Claim 1] Vacuum air conditioner according to protection element (1) Vacuum pump is the heart of the system. Pump modified and design with capacity that eliminate entire air from the water tank storage within few minutes. This is the most important step in order to cool dawn water and then transferred coldness to the Evaporator.
2. Vacuum air conditioner according to protection element (5) water tank storage is designed with internal separation in order to eliminate air from water in short time. Tank is made from material which is interactive with water, this will help to keep water cool for long time. Tank is sealed to avoid any air entering/ escaping from the tank. In addition, tank covered with heat insulation. Tank equipped with sealed filling water and breather valve as safety device.
3. Vacuum air conditioner according to protection element (6) Heat pipes are extremely sensitive to heat and its way better than regular copper tube. Heat pipes are responsible to absorb coldness from water tanks and transfer it to evaporator. In this process water pump and tubes are excluded as heat pipes will take both circulating and transferring of coldness in same time.
4. Vacuum air conditioner according to protection element (9) Evaporator is design to achieve maximum heat exchange with surrounding. Instead of copper tubes, heat pipes are passing through aluminum fins. To achieve maximum and effective heat exchanger, heat pipes are design to enter evaporator from two end sides.
PCT/OM2021/050007 2021-07-15 2021-07-15 Vacuum air conditioner WO2023287308A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/OM2021/050007 WO2023287308A1 (en) 2021-07-15 2021-07-15 Vacuum air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/OM2021/050007 WO2023287308A1 (en) 2021-07-15 2021-07-15 Vacuum air conditioner

Publications (1)

Publication Number Publication Date
WO2023287308A1 true WO2023287308A1 (en) 2023-01-19

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ID=84919592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/OM2021/050007 WO2023287308A1 (en) 2021-07-15 2021-07-15 Vacuum air conditioner

Country Status (1)

Country Link
WO (1) WO2023287308A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103363599A (en) * 2012-04-06 2013-10-23 荣国华 Air conditioner system with cooling tower
CN203907841U (en) * 2014-05-14 2014-10-29 十堰市众盟汽车管件有限公司 Water-refrigerating air conditioner
CN105276724A (en) * 2014-07-03 2016-01-27 徐建宁 Vertical vacuum air conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103363599A (en) * 2012-04-06 2013-10-23 荣国华 Air conditioner system with cooling tower
CN203907841U (en) * 2014-05-14 2014-10-29 十堰市众盟汽车管件有限公司 Water-refrigerating air conditioner
CN105276724A (en) * 2014-07-03 2016-01-27 徐建宁 Vertical vacuum air conditioner

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