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WO2022035402A1 - An indoor unit for cassette type air conditioners - Google Patents

An indoor unit for cassette type air conditioners Download PDF

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Publication number
WO2022035402A1
WO2022035402A1 PCT/TR2021/050779 TR2021050779W WO2022035402A1 WO 2022035402 A1 WO2022035402 A1 WO 2022035402A1 TR 2021050779 W TR2021050779 W TR 2021050779W WO 2022035402 A1 WO2022035402 A1 WO 2022035402A1
Authority
WO
WIPO (PCT)
Prior art keywords
indoor unit
modules
suction area
unit according
air
Prior art date
Application number
PCT/TR2021/050779
Other languages
French (fr)
Inventor
Hekimhan AKDENIZ
Oguz YILDIRIM
Original Assignee
Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi
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 Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi filed Critical Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi
Priority to EP21856363.3A priority Critical patent/EP4196725A4/en
Publication of WO2022035402A1 publication Critical patent/WO2022035402A1/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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0076—Indoor units, e.g. fan coil units with means for purifying supplied air by electric means, e.g. ionisers or electrostatic separators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/11—Apparatus for controlling air treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/16—Connections to a HVAC unit
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to indoor units in air conditioners used in central air conditioning systems which provide heating and/or cooling of air in buildings with large interior spaces, such as workplaces, shopping malls, etc.
  • Air conditioning systems are widely used for providing personal comfort, especially for conditioning an indoor place by heating and/or cooling. These air-conditioning systems can be classified as home type or central type according to the dimensions of the environment to be conditioned, and may include dedicated air conditioners. These air conditioners also comprise at least one indoor unit for drawing the air in which the air conditioner is located, so that the air is conditioned and returned to said environment, and at least one outdoor unit in which elements such as compressor and condenser are provided.
  • wall type, floor type and/or cassette type indoor units can be used.
  • Said indoor units are placed in a part of the environment to be conditioned according to their types, and draw the ambient air so that the air is conditioned and returned to the environment.
  • the air drawn from the environment during such a conditioning process can contain microorganisms, which may cause contamination and adversely affect the health of living things.
  • the indoor unit according to the present invention all of the air drawn into the indoor unit can be sterilized effectively and homogeneously. Thus, while preventing dispersal of microorganisms in an ambient air to other environments, it is also possible to clean the ambient air.
  • An object of the present invention is to provide a cassette type indoor unit for air conditioners used in central air conditioning systems.
  • Another object of the present invention is to provide a cassette type indoor unit which sterilizes the air drawn from an environment.
  • Figure 1 is a top schematic view of an embodiment of the indoor unit with the cover open.
  • Figure 2 is a top schematic view of another embodiment of the indoor unit with the cover open.
  • Figure 3 is a top schematic view of the indoor unit with the cover closed.
  • Central air conditioning systems are used to condition (heat and/or cool) the air in multiple environments at the same time.
  • These central air conditioning systems comprise at least one air conditioner with at least one indoor unit and at least one outdoor unit, wherein said indoor units may be of different types.
  • at least one indoor unit is placed in each environment to be conditioned and the ambient air is sucked through this indoor unit.
  • the sucked air is subjected to the conditioning process based on the determined conditions (e.g. temperature, humidity, etc.), and the conditioned air is returned to the environment via the indoor unit.
  • microorganisms in the air sucked from an environment are also sucked by the indoor unit together with the air and enter the central air conditioning system.
  • the present invention provides a cassette type indoor unit for the air conditioners used in central air conditioning systems, which solves said problems.
  • the cassette type indoor unit as illustrated in Figures 1 - 3, comprises at least one body (G); at least one suction area (S) located in the body (G), preferably in the middle of the body (G), wherein the ambient air is drawn into the suction area (S) for conditioning process; and at least one (preferably more than one) outlet section (L), preferably located on at least one edge of the body (G), for returning the conditioned air to the environment in which the indoor unit is provided.
  • the indoor unit according to the invention also comprises at least three sterilisation modules (1) located next to the suction area (S), preferably adjacent to the suction area (S), and each comprising at least one lighting element that emits light in ultraviolet wavelength (preferably, UVC), the three sterilisation modules (1) being provided in the body (G) to surround the suction area (S) and allow the air coming into the suction area (S) to be sterilized homogeneously with the ultraviolet light emitted by the lighting element; and at least one control unit (2) provided in the body (G) for controlling and adjusting operation of the sterilisation modules (1) (e.g. activating or de-activating the sterilisation modules (1)).
  • at least three sterilisation modules (1) located next to the suction area (S), preferably adjacent to the suction area (S), and each comprising at least one lighting element that emits light in ultraviolet wavelength (preferably, UVC), the three sterilisation modules (1) being provided in the body (G) to surround the suction area (S) and allow the air coming into the
  • the indoor unit according to the invention is positioned on a wall, preferably on the ceiling, of an environment to be air-conditioned, and enables that the ambient air is drawn into the suction area (S) and conditioned.
  • Activating the sterilization modules (1) allows the air drawn into the suction area (S) to be exposed to light in ultraviolet wavelength from at least three sides. Since the sterilization modules (1) are positioned to provide light for the air in the suction area (S), the air coming into the suction area (S) can be effectively sterilized.
  • the sterilized air is then conditioned in accordance with the predetermined conditioning conditions and returned to the environment through the outlet section (L).
  • the indoor unit according to the invention, all of the air drawn from an environment in central air conditioning systems is sterilized homogeneously before being conditioned and returned to the environment(s). Therefore, microorganisms in an environment can be prevented from passing to other environments, and at the same time, the sterilized air is returned to the environment from which the air has been drawn such that air of the same environment can be cleaned. Therefore, the health of living things can be effectively protected.
  • the suction area (S) has a circular form and the sterilization modules (1) are located at an equal distance (a) in between.
  • the indoor unit comprises three sterilization modules (1), as exemplified in figure 1 , for example, the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 120° between successive sterilization modules (1) (especially the middle parts of the sterilization modules (1)).
  • the indoor unit comprises four sterilisation modules (1)
  • the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 90° between successive sterilization modules (1) (especially the middle parts of the sterilization modules (1)).
  • the positioning and number of the three or four sterilization modules (1) allows the circular suction area (S) to be exposed to ultraviolet rays homogeneously. Thus, it is ensured that all the air sucked in the disinfection process is homogeneously exposed to ultraviolet rays at similar doses.
  • the indoor unit according to the invention comprises at least one cover (K) which covers the body (G) and the elements provided in the body (G), the cover (K) having at least one suction gap (K1), preferably in the form of a grid, located to correspond to the suction area (S) and an outlet opening (K2) located to correspond to at least one outlet section (L).
  • the light in ultraviolet wavelength emitted from the sterilization modules (1) can be prevented from harming living things in the environment where the indoor unit is provided.
  • the indoor unit also preferably comprises a switch (3), preferably mechanical, which is in connection with the cover (K), wherein if the cover (K) is opened, the switch (3) is brought into an open position so as to cut off energy transfer from the control unit (2) to the sterilization modules (1), and if the cover (K) is closed, the switch (3) is brought into a closed position so as to allow energy transfer to the sterilization modules (1).
  • a switch (3) preferably mechanical, which is in connection with the cover (K), wherein if the cover (K) is opened, the switch (3) is brought into an open position so as to cut off energy transfer from the control unit (2) to the sterilization modules (1), and if the cover (K) is closed, the switch (3) is brought into a closed position so as to allow energy transfer to the sterilization modules (1).
  • control unit (2) prevents activation of the sterilization modules (1) for a predetermined time (for example, within the range of 5-15 minutes, especially preferably 10 minutes) when the switch (3) is brought from the open position into the closed position.
  • a predetermined time for example, within the range of 5-15 minutes, especially preferably 10 minutes
  • the indoor unit according to the invention also preferably comprises at least one remote controller having at least one transmitter; and at least one receiver (4) (preferably an infrared receiver) located in the body (G), which receives the control commands transmitted via the transmitter of the remote control and transmits them to the control unit (2).
  • the operational conditions of the sterilization modules (1) of the indoor unit can be controlled in accordance with the needs.
  • the indoor unit also preferably comprises at least one warning element which is located in the body (G) (especially on the cover (K)), wherein the warning element emits light when the sterilization modules (1) are activated and does not emit light when the sterilization modules (1) are de-activated, so that the user is informed about activity (operation) status of the sterilization modules (1).
  • the indoor unit according to the present invention all of the air drawn into the indoor unit can be sterilized effectively and homogeneously. Thus, while preventing dispersal of microorganisms in an ambient air to other environments, it is also possible to clean the ambient air.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Central Air Conditioning (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The cassette type indoor unit according to the present invention, especially for air conditioners used in central air conditioning systems comprises at least one body (G); at least one suction area (S) located in the body (G), wherein the ambient air is drawn into the suction area (S) for conditioning process; at least one outlet section (L) for returning the conditioned air to its environment; at least three sterilisation modules (1) located next to the suction area (S) and each comprising at least one lighting element that emits light in ultraviolet wavelength, the three sterilisation modules (1) being provided in the body (G) to surround the suction area (S) and allow the air coming into the suction area (S) to be sterilized homogeneously with the ultraviolet light emitted by the lighting element; and at least one control unit (2) for controlling and adjusting operation of the sterilisation modules (1). Thanks to the indoor unit according to the present invention, all of the air drawn into the indoor unit can be sterilized effectively and homogeneously. Thus, while preventing dispersal of microorganisms in an ambient air to other environments, it is also possible to clean the ambient air.

Description

AN INDOOR UNIT FOR CASSETTE TYPE AIR CONDITIONERS
Technical Field
The present invention relates to indoor units in air conditioners used in central air conditioning systems which provide heating and/or cooling of air in buildings with large interior spaces, such as workplaces, shopping malls, etc.
Prior Art
Air conditioning systems are widely used for providing personal comfort, especially for conditioning an indoor place by heating and/or cooling. These air-conditioning systems can be classified as home type or central type according to the dimensions of the environment to be conditioned, and may include dedicated air conditioners. These air conditioners also comprise at least one indoor unit for drawing the air in which the air conditioner is located, so that the air is conditioned and returned to said environment, and at least one outdoor unit in which elements such as compressor and condenser are provided.
Especially for air conditioners provided in central air conditioning systems, wall type, floor type and/or cassette type indoor units can be used. Said indoor units are placed in a part of the environment to be conditioned according to their types, and draw the ambient air so that the air is conditioned and returned to the environment. However, the air drawn from the environment during such a conditioning process can contain microorganisms, which may cause contamination and adversely affect the health of living things.
In central air conditioning systems, multiple different environments are conditioned by the same system. In this context, drawing the microorganisms in one of these environments conditioned by the same air conditioning system together with the air drawn by the indoor unit may cause the dispersal of these microorganisms to other environments conditioned by the same central air conditioning system. This can pose serious risks, especially in terms of health issues; for example, microorganisms in an environment which may infect a living thing carrying an airborne disease can disperse in other environments such that the living things in other environments are infected, as well. Various filtering elements are used in the known the art to solve said problem. However, these filtering elements both create difficulties in assembly and lead to an increase in labour and costs. In addition, use of the filtering elements cannot provide effective air sterilization.
Brief Description of the Invention
The cassette type indoor unit according to the present invention, especially for air conditioners used in central air conditioning systems comprises at least one body; at least one suction area located in the body, wherein the ambient air is drawn into the suction area for conditioning process; at least one outlet section for returning the conditioned air to its environment; at least three sterilisation modules located next to the suction area and each comprising at least one lighting element that emits light in ultraviolet wavelength, the three sterilisation modules being provided in the body to surround the suction area and allow the air coming into the suction area to be sterilized homogeneously with the ultraviolet light emitted by the lighting element; and at least one control unit for controlling and adjusting operation of the sterilisation modules.
Thanks to the indoor unit according to the present invention, all of the air drawn into the indoor unit can be sterilized effectively and homogeneously. Thus, while preventing dispersal of microorganisms in an ambient air to other environments, it is also possible to clean the ambient air.
Object of the Invention
An object of the present invention is to provide a cassette type indoor unit for air conditioners used in central air conditioning systems.
Another object of the present invention is to provide a cassette type indoor unit which sterilizes the air drawn from an environment.
A further object of the present invention is to provide a cassette type indoor unit that allows easy installation without causing an increase in labour and costs. Yet a further object of the present invention is to provide an easy-to-use and reliable cassette indoor unit.
Description of the Drawings
Exemplary embodiments of the indoor unit according to the present invention are illustrated in the attached drawings, in which:
Figure 1 is a top schematic view of an embodiment of the indoor unit with the cover open.
Figure 2 is a top schematic view of another embodiment of the indoor unit with the cover open.
Figure 3 is a top schematic view of the indoor unit with the cover closed.
All the parts illustrated in figures are individually assigned a reference numeral and the corresponding terms of these numbers are listed as follows:
Body (G)
Suction area (S)
Outlet section (L)
Cover (K)
Suction gap (K1)
Outlet opening (K2)
Sterilisation module (1)
Control unit (2)
Switch (3)
Receiver (4)
Distance (a)
Description of the Invention
Central air conditioning systems are used to condition (heat and/or cool) the air in multiple environments at the same time. These central air conditioning systems comprise at least one air conditioner with at least one indoor unit and at least one outdoor unit, wherein said indoor units may be of different types. In these air conditioning systems, at least one indoor unit is placed in each environment to be conditioned and the ambient air is sucked through this indoor unit. The sucked air is subjected to the conditioning process based on the determined conditions (e.g. temperature, humidity, etc.), and the conditioned air is returned to the environment via the indoor unit. In this process, microorganisms in the air sucked from an environment are also sucked by the indoor unit together with the air and enter the central air conditioning system. These microorganisms entering the air conditioning system return to the environment with the conditioned air. Also, in these central air conditioning systems, since the air in different environments is conditioned with the same system, microorganisms in one environment can disperse into other conditioned environments. This can lead to negativities in terms of living health. In this context, the present invention provides a cassette type indoor unit for the air conditioners used in central air conditioning systems, which solves said problems.
The cassette type indoor unit according to the present invention, as illustrated in Figures 1 - 3, comprises at least one body (G); at least one suction area (S) located in the body (G), preferably in the middle of the body (G), wherein the ambient air is drawn into the suction area (S) for conditioning process; and at least one (preferably more than one) outlet section (L), preferably located on at least one edge of the body (G), for returning the conditioned air to the environment in which the indoor unit is provided. The indoor unit according to the invention also comprises at least three sterilisation modules (1) located next to the suction area (S), preferably adjacent to the suction area (S), and each comprising at least one lighting element that emits light in ultraviolet wavelength (preferably, UVC), the three sterilisation modules (1) being provided in the body (G) to surround the suction area (S) and allow the air coming into the suction area (S) to be sterilized homogeneously with the ultraviolet light emitted by the lighting element; and at least one control unit (2) provided in the body (G) for controlling and adjusting operation of the sterilisation modules (1) (e.g. activating or de-activating the sterilisation modules (1)).
The indoor unit according to the invention is positioned on a wall, preferably on the ceiling, of an environment to be air-conditioned, and enables that the ambient air is drawn into the suction area (S) and conditioned. Activating the sterilization modules (1) allows the air drawn into the suction area (S) to be exposed to light in ultraviolet wavelength from at least three sides. Since the sterilization modules (1) are positioned to provide light for the air in the suction area (S), the air coming into the suction area (S) can be effectively sterilized. The sterilized air is then conditioned in accordance with the predetermined conditioning conditions and returned to the environment through the outlet section (L). Thanks to the indoor unit according to the invention, all of the air drawn from an environment in central air conditioning systems is sterilized homogeneously before being conditioned and returned to the environment(s). Therefore, microorganisms in an environment can be prevented from passing to other environments, and at the same time, the sterilized air is returned to the environment from which the air has been drawn such that air of the same environment can be cleaned. Therefore, the health of living things can be effectively protected.
In a preferred embodiment of the invention, the suction area (S) has a circular form and the sterilization modules (1) are located at an equal distance (a) in between. In other words, if the indoor unit comprises three sterilization modules (1), as exemplified in figure 1 , for example, the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 120° between successive sterilization modules (1) (especially the middle parts of the sterilization modules (1)). As illustrated in Figure 2, if the indoor unit comprises four sterilisation modules (1), the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 90° between successive sterilization modules (1) (especially the middle parts of the sterilization modules (1)). Due to the working principle of lighting elements (for example, LEDs) that emit light in ultraviolet wavelength, intensity of the ultraviolet light decreases as the distance from the lighting element increases. The positioning and number of the three or four sterilization modules (1) allows the circular suction area (S) to be exposed to ultraviolet rays homogeneously. Thus, it is ensured that all the air sucked in the disinfection process is homogeneously exposed to ultraviolet rays at similar doses.
In an alternative embodiment, the indoor unit according to the invention comprises at least one cover (K) which covers the body (G) and the elements provided in the body (G), the cover (K) having at least one suction gap (K1), preferably in the form of a grid, located to correspond to the suction area (S) and an outlet opening (K2) located to correspond to at least one outlet section (L). Thus, the light in ultraviolet wavelength emitted from the sterilization modules (1) can be prevented from harming living things in the environment where the indoor unit is provided. In this embodiment, the indoor unit also preferably comprises a switch (3), preferably mechanical, which is in connection with the cover (K), wherein if the cover (K) is opened, the switch (3) is brought into an open position so as to cut off energy transfer from the control unit (2) to the sterilization modules (1), and if the cover (K) is closed, the switch (3) is brought into a closed position so as to allow energy transfer to the sterilization modules (1). Thus, when the cover (K) is opened, the sterilization modules (1) can be de-activated, so that damage to living things because of ultraviolet light can be effectively prevented. In this embodiment, the control unit (2) prevents activation of the sterilization modules (1) for a predetermined time (for example, within the range of 5-15 minutes, especially preferably 10 minutes) when the switch (3) is brought from the open position into the closed position. Thus, the problems that may arise due to the switch (3) being turned off accidentally while the cover (K) is still open can be prevented, and a reliable indoor unit can be obtained.
In another embodiment, the indoor unit according to the invention also preferably comprises at least one remote controller having at least one transmitter; and at least one receiver (4) (preferably an infrared receiver) located in the body (G), which receives the control commands transmitted via the transmitter of the remote control and transmits them to the control unit (2). Thus, the operational conditions of the sterilization modules (1) of the indoor unit can be controlled in accordance with the needs.
In another alternative embodiment, the indoor unit also preferably comprises at least one warning element which is located in the body (G) (especially on the cover (K)), wherein the warning element emits light when the sterilization modules (1) are activated and does not emit light when the sterilization modules (1) are de-activated, so that the user is informed about activity (operation) status of the sterilization modules (1).
Thanks to the indoor unit according to the present invention, all of the air drawn into the indoor unit can be sterilized effectively and homogeneously. Thus, while preventing dispersal of microorganisms in an ambient air to other environments, it is also possible to clean the ambient air.

Claims

1. A cassette type indoor unit especially for air conditioners used in central air conditioning systems, comprising at least one body (G); at least one suction area (S) located in the body (G), wherein the ambient air is drawn into the suction area (S) for conditioning process; and at least one outlet section (L) for returning the conditioned air to its environment, characterized by comprising at least three sterilisation modules (1) located next to the suction area (S) and each comprising at least one lighting element that emits light in ultraviolet wavelength, the three sterilisation modules (1) being provided in the body (G) to surround the suction area (S) and allow the air coming into the suction area (S) to be sterilized homogeneously with the ultraviolet light emitted by the lighting element; and at least one control unit (2) for controlling and adjusting operation of the sterilisation modules (1).
2. An indoor unit according to claim 1 , characterized in that the sterilisation modules (1) are located adjacent to the suction area (S).
3. An indoor unit according to any of the preceding claims, characterized in that the suction area (S) has a circular form.
4. An indoor unit according to any of the preceding claims, characterized in that the sterilization modules (1) are located at an equal distance (a) in between.
5. An indoor unit according to any of the claims 1-3, characterized in that in case three sterilization modules (1) are provided, the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 120° between successive sterilization modules (1).
6. An indoor unit according to any of the claims 1-3, characterized in that in case four sterilization modules (1) are provided, the sterilization modules (1) are positioned around the suction area (S) with a spring part distance (a) sweeping an angle of 90° between successive sterilization modules (1).
7 An indoor unit according to any of the preceding claims, characterized by comprising at least one cover (K) which covers the body (G) and the elements provided in the body (G), the cover (K) having at least one suction gap (K1) located to correspond to the suction area (S) and an outlet opening (K2) located to correspond to at least one outlet section (L). An indoor unit according to claim 7, characterized by comprising at least one switch (3) which is in connection with the cover (K), wherein if the cover (K) is opened, the switch (3) is brought into an open position so as to cut off energy transfer from the control unit (2) to the sterilization modules (1), and if the cover (K) is closed, the switch (3) is brought into a closed position so as to allow energy transfer to the sterilization modules (1). An indoor unit according to claim 8, characterized in that the control unit (2) is such that it prevents activation of the sterilization modules (1) for a predetermined time when the switch (3) is brought from the open position into the closed position. An indoor unit according to any of the preceding claims, characterized by comprising at least one remote controller having at least one transmitter; and at least one receiver (4) located in the body (G), which receives the control commands transmitted via the transmitter of the remote control and transmits them to the control unit (2). An indoor unit according to any of the preceding claims, characterized by comprising at least one warning element which is located in the body (G), wherein the warning element emits light when the sterilization modules (1) are activated and does not emit light when the sterilization modules (1) are de-activated, so that the user is informed about activity (operation) status of the sterilization modules (1). An indoor unit according to any of the claims 7-9, characterized by comprising at least one warning element which is located in the cover (K), wherein the warning element emits light when the sterilization modules (1) are activated and does not
8 emit light when the sterilization modules (1) are de-activated, so that the user is informed about activity status of the sterilization modules (1). An indoor unit according to any of the preceding claims, characterized in that the suction area (S) is located in the middle of the body (G). An indoor unit according to any of the preceding claims, characterized in that the outlet section (L) is located on at least one edge of the body.
9
PCT/TR2021/050779 2020-08-14 2021-08-09 An indoor unit for cassette type air conditioners WO2022035402A1 (en)

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EP21856363.3A EP4196725A4 (en) 2020-08-14 2021-08-09 An indoor unit for cassette type air conditioners

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TR2020/12827A TR202012827A1 (en) 2020-08-14 2020-08-14 An indoor unit for cassette type air conditioners.
TR2020/12827 2020-08-14

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WO1995017634A1 (en) * 1993-12-22 1995-06-29 Klean A/S Cleaning arrangement including filters and ultraviolet radiation
US20020152760A1 (en) * 2000-01-28 2002-10-24 Kenji Okuda Celling cassette type air conditioner
WO2011055140A1 (en) * 2009-11-04 2011-05-12 Nanoclave Technologies Llp Sterilising uv emitter

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KR20080059752A (en) * 2006-12-26 2008-07-01 엘지전자 주식회사 Indoor unit for air conditioner
EP2640428B1 (en) * 2010-11-18 2017-01-11 OY Halton Group Ltd. Heating, cooling and uv air purification device
KR102477412B1 (en) * 2016-07-22 2022-12-15 엘지전자 주식회사 Ultraviolet sterilization module, and air conditioner having the same
KR102392959B1 (en) * 2017-09-20 2022-04-29 엘지전자 주식회사 Indoor unit of air conditioner
KR102043661B1 (en) * 2018-03-13 2019-11-12 엘지전자 주식회사 Ceiling type air conditioner

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Publication number Priority date Publication date Assignee Title
WO1995017634A1 (en) * 1993-12-22 1995-06-29 Klean A/S Cleaning arrangement including filters and ultraviolet radiation
US20020152760A1 (en) * 2000-01-28 2002-10-24 Kenji Okuda Celling cassette type air conditioner
WO2011055140A1 (en) * 2009-11-04 2011-05-12 Nanoclave Technologies Llp Sterilising uv emitter

Non-Patent Citations (1)

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Title
See also references of EP4196725A4 *

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TR202012827A1 (en) 2022-02-21
EP4196725A1 (en) 2023-06-21
EP4196725A4 (en) 2024-09-04

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