WO2022015154A1 - Système de chauffage et de refroidissement de l'air - Google Patents

Système de chauffage et de refroidissement de l'air Download PDF

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Publication number
WO2022015154A1
WO2022015154A1 PCT/MY2021/050053 MY2021050053W WO2022015154A1 WO 2022015154 A1 WO2022015154 A1 WO 2022015154A1 MY 2021050053 W MY2021050053 W MY 2021050053W WO 2022015154 A1 WO2022015154 A1 WO 2022015154A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanging
exchanging portion
compressor
container
air
Prior art date
Application number
PCT/MY2021/050053
Other languages
English (en)
Inventor
Wai Koon LOW
Original Assignee
Low Wai Koon
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 Low Wai Koon filed Critical Low Wai Koon
Publication of WO2022015154A1 publication Critical patent/WO2022015154A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/029—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by the layout or mutual arrangement of components, e.g. of compressors or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0328—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with means for purifying supplied 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
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices

Definitions

  • the present invention relates to temperature control in a designated area. More particularly, a system for heating and cooling air in a space e.g. room, open space and the like.
  • Air cooling devices are known to decrease the temperature of air by transferring heat energy from hot air into a typical cooler liquid medium where evaporative cooling takes place such that heat is dissipated into the liquid medium. With a blower in position, the circulation of exiting air is boosted and air exiting the device is cooled. Commonly, air coolers are selected over air conditioners due to many reasons, that are lower energy consumption, operating costs and maintenance, higher moisture effect, more eco-friendly and better portability.
  • W02019108053A1 introduces a portable air cooler for cooling ambient air in a designated area.
  • the portable air cooler produces cold air by eliminating heat using liquid medium (known as liquid heat elimination medium) and also dissipates the heat generated by compressor.
  • liquid medium known as liquid heat elimination medium
  • the existing air coolers are single functioning, wherein they are limited to only producing cool air. For that reason, the usage of the device is limited for hot environment. For example, in countries with hot and cold seasons, the air cooler device may only bring advantage to cool hot air in hot season. However, for the cold season, there is little to zero purpose for the air cooler device.
  • the present invention relates to a system for heating and cooling air in a space comprising a container a conduit network, a fan, a compressor and an electronic control unit.
  • the conduit network includes a first heat exchanging portion, a second heat exchanging portion, a reversible valve and an expansion valve.
  • the first heat exchanging portion is immersed in a fluid medium in the container, and the second heat exchanging portion is positioned near the fan, such that the fan forces air around the second heat exchanging portion to exit the housing unit through an air outlet.
  • the compressor connected to the reversible valve pumps a coolant medium through the conduit network
  • the reversible valve is operable between a heating mode and a cooling mode.
  • the reversible valve includes two branches connected to two ends of the conduit network and two branches connected to an input end and an output end of the compressor.
  • the coolant medium from the second heat exchanging portion is inputted to the compressor and high pressure coolant medium from the compressor is inputted to the first heat exchanging portion.
  • the coolant medium from the first heat exchanging portion is inputted to the compressor and high pressure coolant medium from the compressor is inputted to the second heat exchanging portion.
  • Temperature of the coolant medium increases when the compressor pumps the coolant medium into the conduit network, such that temperature of coolant medium at the input end of the compressor is lower that of coolant medium at the output end of the compressor.
  • temperature of the coolant medium flowing through the first heat exchanging portion is higher than that of the coolant medium in the second heat exchanging portion.
  • temperature of the coolant medium flowing through the first heat exchanging portion is lower than that of the coolant medium in the second heat exchanging portion.
  • the first heat exchanging portion exchanges heat energy with the fluid medium in the container, while the second heat exchanging portion exchanges heat energy with air flow between an air inlet and air outlet of a housing unit enclosing all the component of the system.
  • the first heat exchanging portion absorbs heat energy from the fluid medium in the container while the second heat exchanging portion transfers heat energy to the air flow between the air inlet and air outlet.
  • the first heat exchanging portion transfers heat energy to the fluid medium in the container while the second heat exchanging portion absorbs heat energy to the air flow.
  • the present invention is capable of sharing same components between the heating and cooling operations, and therefore minimizing the cost and space requirements.
  • FIGURE 1 a illustrates a front view of the system in accordance with the present invention.
  • FIGURE 1 b illustrates a side view of the system in accordance with the present invention.
  • FIGURE 2a illustrates a front view of the system in accordance with another embodiment of the present invention.
  • FIGURE 2b illustrates a side view of the system in accordance with another embodiment of the present invention.
  • FIGURE 3a illustrates an internal view of a reversible valve when the system operates in a heating mode.
  • FIGURE 3b illustrates a flow of coolant medium, when the system operates in the heating mode.
  • FIGURE 4a illustrates an internal view of a reversible valve when the system operates in a cooling mode.
  • FIGURE 4b illustrates a flow of coolant medium, when the system operates in the heating mode.
  • FIGURES 1 a to 4b The system for heating and cooling air in a space e.g. room, open space and the like, according to the preferred embodiments of the present invention will now be described in accordance to the accompanying drawings FIGURES 1 a to 4b, either individually or in any combination thereof.
  • FIGURE 1 a illustrates therein the system for heating and cooling air in a space, in accordance with an exemplary embodiment of the present invention.
  • the system (1 ) comprises a housing unit (900) enclosing a container (200), a conduit network (100), a pump (300), an evaporative pad (400, as in FIGURE 1 b), a fan (600), a compressor (130) and an electronic control unit (ECU) (not shown).
  • the container (200) contains a fluid medium such as water, and is made of plastic, metal or any other material that is non-reactive to the fluid medium.
  • the fan (600) is positioned between one or more air inlets (500, as in FIGURE 1 b) and one or more air outlets (700) of the housing unit (900) for drawing air through the air inlets (500) and forcing the air to exit through the air outlet (700).
  • the fan (600) may be a centrifugal fan, axial fan, radial fan or any other commercially available fans comprising an impeller.
  • the conduit network (100) includes a first heat exchanging portion (110), a second heat exchanging portion (150), a reversible valve (800) and an expansion valve (170) connected through multiple hoses to form a single loop carrying a coolant medium.
  • the compressor (130) is connected to the conduit network (100) in series, such that compressor (130) pumps the coolant medium at a very high pressure to enable the coolant medium to flow across the loop.
  • the compressor (130) includes an input end and an output end and is operated under the control of the ECU. Temperature of the coolant medium is increased when the compressor (130) pumps the coolant medium into the conduit network (100), such that temperature of coolant medium at the input end of the compressor (130) is lower that of coolant medium at the output end of the compressor (130). Temperature difference between the coolant medium at the input end and that at the output end is 10°C.
  • the heat exchanging portions (110, 150) are formed of thermally conductive material such as copper, aluminum and the like, such that the heat exchanging portions (110, 150) readily exchange heat energy with the coolant medium flowing therein and/or an environment to which the heat exchanging portions (110, 150) are in contact with.
  • the heat exchanging portions (110, 150) are formed in a zig-zag configuration to maximize exposure of the heat exchanging portions (110, 150) to the environment.
  • the heat exchanging portions (110, 150) working may also be formed as coils or any other configuration that maximizes the exposure.
  • the conduit network (100) and the compressor (130) are made of materials that are not reactive to the coolant medium.
  • the first heat exchanging portion (110) is immersed in the fluid medium in the container to enable the first heat exchanging portion (110) to exchange heat energy with the fluid medium.
  • the second heat exchanging portion (150) is positioned near the fan (600), such that the second heat exchanging portion (150) exchanges heat energy with the air flowing between the air inlet (500) and the air outlet (700).
  • the compressor (130) connected to the reversible valve (800) pumps the coolant medium into the conduit network (100) through the reversible valve (800).
  • the ECU controls operations of the reversible valve (800), wherein the reversible valve (800) is operable between a heating mode and a cooling mode.
  • the reversible valve (800) includes two branches (820, 840, shown in FIGURES 3a and 4a) connected to two ends of the conduit network (100) and two branches (810, 830, shown in FIGURES 3a and 4a) connected to the input end and output end of the compressor (130). Furthermore, the reversible valve (800) includes a slider (850, shown in FIGURE 3a and 4a) movable between two positions under the control of the ECU. When the ECU moves the slider (850) to one position, the reversible valve (800) operates in the heating mode, as shown in FIGURE 3a.
  • the reversible valve (800) operates in the cooling mode, as shown in FIGURE 3a.
  • the coolant medium from the second heat exchanging portion (150) inputted to the input end of the compressor (130) and high pressure coolant medium from of the compressor (130) is inputted to the first heat exchanging portion (110), as shown in FIGURE 4b.
  • the coolant medium from the first heat exchanging portion (1 10) inputted to the input end of the compressor (130) and high pressure coolant medium from of the compressor (130) is inputted to the second heat exchanging portion (150), as shown in FIGURE 3b.
  • the temperature of the coolant medium flowing through the first heat exchanging portion (110) is higher than that of the coolant medium in the second heat exchanging portion (150).
  • the temperature of the coolant medium flowing through the first heat exchanging portion (110) is lower than that of the coolant medium in the second heat exchanging portion (150).
  • the first heat exchanging portion (110) exchanges heat energy with the fluid medium in the container (200) and the second heat exchanging portion (110) exchanges heat energy with the air flow between the air inlet (500) and the air outlet (700). Therefore, in the heating mode, the first heat exchanging portion (110) absorbs heat energy from the compressor (130) by the coolant medium that flows back to the compressor (130) while the second heat exchanging portion (110) transfers heat energy to the air flow between the air inlet (500) and the air outlet (700). Similarly, in the cooling mode, the first heat exchanging portion (110) transfers heat energy to the fluid medium in the container (200) while the second heat exchanging portion (110) absorbs heat energy from the air flow between the air inlet (500) and the air outlet (700).
  • the system (100) includes an upper compartment (50) and a lower compartment (70).
  • the upper compartment (50) and the lower compartment (70) are separated from each other by a partition (90).
  • the partition (90) may be made of plastic, aluminium, steel, metal sheet or any other material deemed suitable.
  • the container (200) is within the upper compartment (50) and seated on the partition (90).
  • the container (200) is open in top and is placed exactly below the evaporative pad (400), as illustrated in FIGURES 1b and 2b, such that any fluid medium dripping from the evaporative pad is collected in the container (200).
  • fluid medium can be filled manually to the container (200), preferably before the system (1) is put into operation.
  • the container (200) is removably connected to a fluid source such as but not limited to a water pipe for automatic refilling of the fluid medium when fluid level falls below a predetermined threshold.
  • the pump (300) is configured to pump the fluid medium from the container (200) to the evaporative pad (400) through a conduit (10).
  • the evaporative pad (400) is configured as a honeycomb structure.
  • the pump (300) of the preferred embodiments of the present invention may be placed external to the container (200) as illustrated in FIGURE 1a or within the container (200), as illustrated in FIGURE 2a.
  • the container (200) and the at least one conduit (10) are preferably enclosed with an insulator (not shown in the drawings).
  • the insulator may be made from polystyrene or any other materials deemed suitable.
  • the evaporative pad (400) is positioned near the air inlet (500), as illustrated in FIGURES 1 b and 2b. It should be noted the evaporative pad (400) is configured to completely cover a cross section of the air inlet (500).
  • the evaporative pad (400) may be a multilayer fiber pad, cellulose pad, wood wool pad, a corrugated cardboard or the like.
  • the fluid medium in the container (200) is delivered to a top portion of the evaporative pad (400) such that a supplementary heat exchange happens between the air entering the air inlet (500) and the fluid medium flowing down the evaporative pad (400).
  • the conduit (10) is extended to the top portion of the evaporative pad (400). It should be noted that a top end of the conduit 10 is provided with a plurality of perforations (11 ) configured to e.g. spray or sprinkle, the fluid medium from the container (200) on top of the evaporative pad (400) as illustrated in FIGURE 1 a and 1 b.
  • a fluid medium receiving tray (20) is positioned above the evaporative pad (400) and connected to the conduit (10) as illustrated in FIGURES 2a and 2b.
  • the fluid medium receiving tray (20) includes a plurality of distribution nozzles (21 ) at the bottom. It should be noted that the fluid medium receiving tray (20) is configured to expel e.g.
  • the fan (600) is positioned at a central portion of the upper compartment (50) and between the evaporative pad (400) and the air outlet (700) as illustrated in FIGURES 1 b and 2b.
  • ambient air from the surrounding is drawn by the fan (600) at the air inlet (500) and forced towards the air outlet (700), wherein the second heat exchange portion (150) is positioned between the fan (600) and the air outlet (700).
  • a part of the second heat exchanging portion (150) is within the upper compartment (50) and another part is in the lower compartment (70) to increase heat exchanging capacity of the second heat exchanging portion (150).
  • the latter part of the second heat exchanging portion (150) is in contact with a plurality of heat transfer fins (151 ) as illustrated in FIGURES 1 a to 2b.
  • the heat transfer fins (151) facilitate and increase heat exchanging capacity so as to ensure that the coolant medium exchanges heat energy with air surrounding the heat transfer fins (151 ).
  • the at least one air duct 30 is preferably extended from a space between the centrifugal fan 600 and the air outlet 700 at the upper compartment 50 and entered into the lower compartment 70 so as to channel the cooled air for cooling the cooling coil 150. It will be appreciated that such configuration could dissipate the heat generated by the compressor 130 through the water circulating to evaporation pad 400 and thereby significantly reduce the exhaust heat to the ambient environment and increase the relative humidity level up to about 80%.
  • the compressor (130) is further provided with a heat dissipation element (131 ) suitably covering a top portion of the compressor (130) as illustrated in FIGURE 2a.
  • the conduit (10) is further provided with a branch tube (13) integrally extending from the conduit (10) and suitably positioned above the compressor (130) as illustrated in FIGURE 2a.
  • the branch tube (13) is configured to deliver the fluid medium to the heat dissipation element (131 ).
  • the branch tube (13) is enclosed with an insulator to condensation on a surface of the branch tube (13) of the conduit (10).
  • the insulator may be made from polystyrene or any other materials deemed suitable.
  • the heat dissipation element (131 ) is configured to absorb the fluid medium droplets supplied by the branch tube (13). It will be appreciated that the absorbed fluid medium in the heat dissipation element (131) is capable of absorbing and dissipating heat generated by the compressor (130) and thereby reducing heat released by the compressor (130) to the ambient environment.
  • the heat dissipation element (131 ) of the compressor (130) is preferably made from gypsum powder.
  • a thermostat (not shown) connected to the ECU to control the operation of the compressor (130) so as to ensure that the fluid medium in the container (200) is maintained at appropriate temperature.
  • the system (1 ) comprises decontamination unit to sterilize, disinfect and purify the fluid medium and/or air exiting the air outlet (700) by discharging decontamination solution and/or radiation to the fluid medium, container and/or air flow exiting the air outlet (700).
  • the cleansing means comprises a sterilization and disinfection solution container (910), a purification solution container (920) and an ultraviolet (UV) light sanitizer (930) in the upper compartment (50).
  • the sterilization and disinfection solution container (910) and the purification solution container (920) are positioned either externally or internally of the housing unit (900), wherein the containers are accessible by a user for refilling purposes..
  • the sterilization and disinfection solution container (910) discharges a sterilization and disinfection solution into the fluid medium in the container (200).
  • discharge of the sterilization and disinfection solution is controlled by means of a valve (not shown) operated by the ECU.
  • a valve not shown
  • any other suitable means of discharge control can be used.
  • the sterilization and disinfection solution effectively kills bacteria, viruses and microorganisms.
  • the sterilization and disinfection solution is non-toxic, fast-acting and hypoallergenic and is an environmentally friendly and powerful biocide.
  • the purification solution container (920) discharges a purification solution in the air flow between the air inlet (500) and the air outlet (700), wherein the discharge may be controlled by a valve (not shown) operated by the ECU.
  • the purification solution is to clear off contaminations and purify the air exiting the air outlet (700).
  • an aromatic fragrance container may be placed in the housing unit (900) to add fragrance to the air flow exiting the air outlet (700).
  • the UV light sanitizer (930) is positioned in the fluid medium of the container (200) to kill any invisible bacteria and sterilize the inner surfaces of the receptacle (200) by emitting UV rays towards the inner surfaces.
  • the system (1 ) may include a temperature-based control unit such as a thermostat, for switching on and off the system (1 ) based on a temperature of the space.

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

Abstract

La présente invention concerne un système (1) pour chauffer et refroidir de l'air dans un espace, par exemple une pièce, qui comprend une unité de logement renfermant un contenant (200), un réseau de conduits (100), un ventilateur (600), un compresseur (130) et une unité de commande électronique (ECU). Le réseau de conduits (100) comprend une première partie d'échange de chaleur (110), une seconde partie d'échange de chaleur (150), une vanne réversible (800) et une vanne de détente (170). La première partie d'échange de chaleur (110) est immergée dans un milieu fluide dans le contenant, et la seconde partie d'échange de chaleur (150) est positionnée à proximité du ventilateur (600), de telle sorte que le ventilateur (600) force de l'air autour de la seconde partie d'échange de chaleur (150) à sortir de l'unité de logement (900) par l'intermédiaire d'une sortie d'air (700). Le compresseur (130) raccordé à la vanne réversible (800) pompe un fluide frigorigène à travers le réseau de conduits (100).
PCT/MY2021/050053 2020-07-15 2021-06-30 Système de chauffage et de refroidissement de l'air WO2022015154A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2020003656 2020-07-15
MYPI2020003656 2020-07-15

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WO2022015154A1 true WO2022015154A1 (fr) 2022-01-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001324234A (ja) * 2000-05-15 2001-11-22 Hitachi Ltd ヒ−トポンプ式熱供給装置
US20030209026A1 (en) * 2002-05-09 2003-11-13 Honda Giken Kogyo Kabushiki Kaisha Heat pump air conditioning system for vehicles
US20150204588A1 (en) * 2014-01-17 2015-07-23 Dri-Steem Corporation Circulation and drain system
KR20190024969A (ko) * 2016-06-23 2019-03-08 썬앰프 리미티드 증기압축냉동 시스템의 리버스-사이클 해동을 위한 상변환 물질 기반의 증진법
WO2019108053A1 (fr) * 2017-11-28 2019-06-06 Low Wai Koon Refroidisseur d'air portatif

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001324234A (ja) * 2000-05-15 2001-11-22 Hitachi Ltd ヒ−トポンプ式熱供給装置
US20030209026A1 (en) * 2002-05-09 2003-11-13 Honda Giken Kogyo Kabushiki Kaisha Heat pump air conditioning system for vehicles
US20150204588A1 (en) * 2014-01-17 2015-07-23 Dri-Steem Corporation Circulation and drain system
KR20190024969A (ko) * 2016-06-23 2019-03-08 썬앰프 리미티드 증기압축냉동 시스템의 리버스-사이클 해동을 위한 상변환 물질 기반의 증진법
WO2019108053A1 (fr) * 2017-11-28 2019-06-06 Low Wai Koon Refroidisseur d'air portatif

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