Hetro passenger vehicle dehumidifier

The Hetro passenger vehicle dehumidifier addresses the challenge of reducing humidity without increasing electrical load by operating independently of the air-conditioner's power load, effectively improving vehicle performance and reducing power consumption.

WO2025114854A1PCT designated stage expired Publication Date: 2025-06-05DEWTEQ TECH PTE LTD OPC
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Patent Information

Application Number
PCT/IB2024/061784
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-11-27
Filing Date
2024-11-25
Publication Date
2025-06-05

AI Technical Summary

Technical Problem

Existing dehumidification systems for passenger vehicles face challenges in efficiently reducing humidity without increasing the electrical load when the air-conditioner is running, leading to reduced vehicle performance and high power consumption.

Method used

The Hetro passenger vehicle dehumidifier operates independently of the air-conditioner's power load by using a Heater and Air circulation fan to manage humidity levels, only engaging when the air-conditioner is not active to avoid parallel loading.

Benefits of technology

This solution effectively reduces humidity in passenger vehicle compartments without adding to the electrical load when the air-conditioner is running, thereby improving vehicle performance and reducing power consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention Hetro passenger vehicle dehumidifier (18) relates to reducing the excess humidity for maintaining the human comfort humidity levels in a Passenger vehicle compartment (20). The Hetro passenger vehicle dehumidifier (18) contains mainly Heater (12), Air circulation fan (13), Humidity sensor(6), Temperature sensor (7), Air filter (14), Digital display (1), Front panel keys (4), Humidistat and control circuits (5) and IR Remote control (2). Below FIG 1 shows main parts of the Hetro passenger vehicle dehumidifier (18), it works only when Passenger vehicle compartment (20) is air-conditioned, because humidity is reduced by the function of Air-conditioner (17) while it is cooling the Passenger vehicle compartment (20). For reducing the humidity in a Passenger vehicle compartment (20), sequence of steps shown in FIG 3 which shows the algorithm flowchart of Hetro passenger vehicle dehumidifier (18) operation. In brief Hetro passenger vehicle dehumidifier (18) measures the Passenger vehicle compartment (20) humidity with Humidity sensor (6), if humidity is more than the set humidity and temperature is less than the set temperature then Hetro passenger vehicle dehumidifier (18) Turns ON (26) the Heater (12) or else it will Turns OFF (25) the Heater (12). This process will continue until the excess humidity is removed to the set humidity value.
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Description

[0001] 1. TITLE OF THE INVENTION

[0002] HETRO PASSENGER VEHICLE DEHUMIDIFIER

[0003] 2. APPLICANT DETAILS

[0004] Name: Dewteq Technologies Private limited (OPC)

[0005] Nationality: Indian.

[0006] Address: No 354, First Floor

[0007] Chennapura Road,

[0008] Kote,

[0009] Chikmagalur - 577101 , Karnataka, India.

[0010] 3. PREAMBLE TO THE DESCRIPTION

[0011] The following specification particularly describes the invention and the manner in which it is to be performed. 4. DESCRIPTION

[0012] 4.1. Field of the Invention

[0013] The present invention relates to the field of Passenger vehicle(21 ) dehumidification for reducing the humidity in a Passenger vehicle compartment(20). More specifically, a dehumidifier for reducing the humidity in a Passenger vehicle compartment(20) for human comfort by using the combination of the invented Hetro passenger vehicle dehumidifier(18) and an Air-conditioner(17). Passenger vehicle(21 )s that include air-conditioned cars, air- conditioned buses, air-conditioned railway coaches, and driver cabins for air-conditioned trucks.

[0014] 4.2. Background of the Invention

[0015] Humidity control is a vital requirement for maintaining hygienic ambient conditions in passenger vehicle compartments. Dewteq Technologies did research on using dehumidifiers in air-conditioned passenger vehicles, for example cars, buses, and railway coaches. Setting desired temperature is available, but for setting desired humidity dehumidifiers are not equipped. One of the major challenges of using dehumidifiers in a passenger vehicle is sourcing the electrical power for dehumidifier, when the air-conditioner is running in parallel running a dehumidifier increases total load on vehicle power significantly. This newly invented “Hetro Passenger Vehicle Dehumidifier” solves the problem of loading dehumidifier in parallel when air-conditioner is running on vehicle electrical power. Please note throughout this document “air-conditioner” or “air-conditioning” words are used for cooling purpose, meaning when air-conditioner is running cooling is happening.

[0016] Automobiles particularly Passenger vehicle(21 )s uses Air-conditioner(17) for maintaining temperature inside the Passenger vehicle compartment(20), when ambient temperature is lower than the set temperature, then inside the Passenger vehicle(21 ) humidity increases, this is due to human occupancy. For reducing the excess humidity in the Passenger vehicle compartment(20) dehumidification is required.

[0017] By using commonly available solutions like compressor dehumidifiers or desiccant dehumidifiers we can reduce the excess humidity in Passenger vehicle compartment(20), but the major disadvantage is power consumption. Compressor dehumidifier consumes high inrush current, and significant power consumption when it is running. Desiccant dehumidifiers require regeneration air for drying the rotor, high power consumption and handling dust for regeneration air on a moving vehicle is another challenging task.

[0018] In a Passenger vehicle(21 ) sourcing power for both air-conditioner and dehumidifier in parallel is a major load, and it will significantly affect the vehicle performance. This newly invented Hetro passenger vehicle dehumidifier(18) product and principle of operation overcomes this problem of parallel load, and it is an economical solution for removing the excess humidity in a Passenger vehicle compartment(20) for human comfort.

[0019] None of the systems available in the prior-arts provide an effective solution. Therefore, there is a long felt need to develop a dehumidifier for reducing the humidity in the Passenger vehicles compartment(20)s without adding parallel load when Passenger vehicle(21 ) Airconditioner^ 7) is running on vehicle power.

[0020] 4.3. Brief Description of Drawings

[0021] Embodiments of the present invention are illustrated by accompanying drawings:

[0022] FIG. 1 illustrates the block diagram of the Hetro passenger vehicle dehumidifier(18) main internal parts according to the present invention.

[0023] FIG. 2 illustrates Hetro passenger vehicle dehumidifier(18) and Air-conditioner(17) working together in a Passenger vehicle(21 ) according to the present invention.

[0024] FIG. 3 illustrates algorithm flowchart of the Hetro passenger vehicle dehumidifier(18) main operation according to the present invention.

[0025] 4.4. Detailed Description of the Invention

[0026] It is to be understood that the present disclosure is not limited in application to the details of composition set forth in the following description. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and not be regarded as limiting.

[0027] The use of “include”, or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced items.

[0028] Each statement of an embodiment is to be considered independent of any other statement of an embodiment despite any use of similar or identical language characterizing each embodiment. The wording “embodiment”, or the like, does not appear at the beginning of every sentence in the specification, is merely a convenience for the reader’s clarity. However, it is the intention of this application to incorporate by reference the phrasing “embodiment,” and the like, at the beginning of every sentence herein where logically possible and appropriate. FIG. 1 illustrates the block diagram of the Hetro passenger vehicle deh um idif i er ( 18) main internal parts according to the present invention. Air flows through the Air filter(14). Temperature sensor(7) and Humidity sensor(6) measures and sends information to Humidistat and control circuits(5), Display(1 ) displays the parameters. The Humidistat and control circuits(5) Turns ON(26) the Heater(12) depending on the customer set temperature and set humidity in the Passenger vehicle compartment(20). IR remote control(2) is used to operate the unit remotely. Hetro passenger vehicle dehum idif ier(18) can also operated without a IR remote control(2), which is through Front panel keys(4).

[0029] FIG. 2 illustrates Hetro passenger vehicle dehumidifier(18) and Air-conditioner(17) working together in a Passenger vehicle(21 ).

[0030] Hetro passenger vehicle dehumidifier(18) can be used to increase the temperature in a Passenger vehicle compartment(20) to a set temperature, if inside the passenger vehicle compartment(20) temperature is less than the set temperature, then Hetro passenger vehicle dehumidifier(18)s Heater(12) Turns ON(26) to maintain the desired temperature in the Passenger vehicle compartment(20).

[0031] Hetro passenger vehicle dehumidifier(18) Turns ON(26) in two instances, first to reduce the humidity until set humidity reaches in the Passenger vehicle compartment(20), and second to maintain the Passenger vehicle compartment(20) temperature if the Airconditioner^ 7) is not having the built-in heater.

[0032] FIG. 3 illustrates algorithm flowchart of the Hetro passenger vehicle dehumidifier(18) for reducing the excess humidity in the Passenger vehicle compartment(20), the main advantage of this algorithm is when Air-conditioner(17) is ON, the Hetro passenger vehicle dehumidifier(18) is remains OFF. This will reduce the electrical power parallel load on Passenger vehicle(21 ) power.

[0033] Hetro passenger vehicle dehumidifier(18) is a standalone unit, it can be installed in any Passenger Vehicle(21 ) if it is air-conditioned. Air-conditioner(17) reduces the temperature and reduces the humidity during cooling the air until the set temperature is reached. After the Passenger vehicle compartment(20)s temperature reaches to set temperature then Airconditioner^ 7) will stop cooling and hence dehumidification also stops, after Airconditioner^ 7) stops if Passenger vehicle compartment(20) humidity is more than the set humidity then the Hetro passenger vehicle dehumidifier(18) Turns ON(26) its Heater(12) and increases the temperature above the set temperature this process will continues until the humidity in the Passenger vehicle compartment(20) reduces to the desired set humidity. 4.5. Summary of the Invention

[0034] The following summary provides an introduction to selected concepts in a simplified form that are further described. Further, while certain disadvantages of the other technologies may be noted or discussed herein, the claimed subject matter is not intended to be limited to implementations that may solve or address any or all of the disadvantages of those other technologies. The sole purpose of this Summary is to present the claimed subject matter in a simplified form.

[0035] It is an object of the present invention to provide dehumidification for reducing the humidity in the Passenger vehicle compartment(20) of a Passenger vehicle(21 ) by using Hetro passenger vehicle dehumidifier(18) and Air-conditioner(17).

[0036] It is an object of the present invention the Hetro passenger vehicle dehumidifier(18) without additional parallel dehumidifier load when Air-conditioner(17) is running in a Passenger vehicle(21 ).

[0037] According to one aspect of the present invention, the Hetro passenger vehicle dehumidifier(18) for reducing the humidity in the Passenger vehicle compartment(20) by the combination of using Air-conditioner(17) is disclosed. The Hetro passenger vehicle dehumidifier(18) of the present invention contains Heater(12) for heating the air, Air circulation fan(13) for circulating the air, Temperature sensor(7) for sensing the temperature in the Passenger vehicle compartment(20), Humidity sensor(6) for sensing the humidity in the Passenger vehicle compartment(20), Humidistat and control circuits(5) for controlling the Heater(12) based on temperature and humidity readings. The humidity of the Passenger vehicle compartment(20) is reduced by the combined action of Air-conditioner(17) and Hetro passenger vehicle dehumidifier(18).

[0038] According to one aspect of the present invention, the Hetro passenger vehicle dehumidifier(18) is used for increasing the temperature in the Passenger vehicle compartment(20) for maintaining the after COVID recommended ambient conditions of 24°C to 30°C temperature and 40% to 70% relative humidity in the passenger vehicle compartment(20) of a Passenger vehicle(21 ) which is air-conditioned.

[0039] According to one aspect of the present invention, the Passenger vehicle dehumidifier(18) for reducing the humidity in a Passenger vehicle compartment(20) where Passenger vehicle(21 ) power source is not parallelly loaded with Air-conditioner(17) and Hetro passenger vehicle dehumidifier(18). At any point of time either Hetro passenger vehicle dehumidifier(18) or Air-conditioner(17) only runs on Passenger vehicle(21 ) power. This is a unique feature where dehumidification, cooling and heating alternatively loads the Passenger vehicle(21) power and maintains the required temperature and humidity in the Passenger vehicle compartment(20).

[0040] According to one aspect of the present invention, the Hetro passenger vehicle dehumidifier(18) is a standalone unit, can be installed in any air-conditioned Passenger vehicle(21) without increasing the Passenger vehicle(21) power sourcing capacity.

Claims

5. CLAIMSWe claim:1 . The Hetro passenger vehicle dehum idif ier(18) for reducing the humidity in a Passenger vehicle compartment(20), by using below main parts and its main function:Main parts: Heater(12) for heating the air in a Passenger vehicle compartment(20). Air circulation fan(13) for circulating the air in the Passenger vehicle compartment (20). Temperature sensor(7) for sensing the temperature in the Passenger vehicle compartment(20). Humidity sensor(6) for sensing the humidity in the Passenger vehicle compartment(20). Humidistat and Control circuits(5) for controlling the Heater(12) based on Temperature sensor(7) and Humidity sensor(6) readings.Main function: Passenger vehicle compartment(20) humidity is reduced to human comfort level by the combined action of the Hetro passenger vehicle dehumidifier(18) and the Air-conditioner(17) in a Passenger vehicle(21 ), when the Passenger vehicle compartment(20) humidity is more than the set humidity, Heater(12) Turns ON(26) and increases the temperature in the Passenger vehicle compartment(20), as temperature is maintained by Air-conditioner(17) and it observes temperature is increased above the set temperature, then it will start cooling the Passenger vehicle compartment(20) to the set humidity, this operation will continue until the set humidity is reached.

2. The Hetro passenger vehicle deh um idif ier( 18) is a standalone unit, it takes Signal(15) from Air-conditioner(17) for reducing the excess humidity in the Passenger vehicle compartment(20). Wherein the Heater(12) Turn ON(26) when the Passenger vehicle compartment(20) humidity is more than the set humidity. By following the algorithm flowchart steps of operation as shown in FIG. 3.

3. The Hetro passenger vehicle dehumidifier(18) is not a parallel load on a Passenger vehicle(21 ) power when Air-conditioner(17) is running. At any point of time only one load, either Hetro passenger vehicle dehumidifier(18) or Air-conditioner(17) runs on Passenger vehicle(21 ) power.

4. The Hetro passenger vehicle dehumidifier(18) used for increasing the temperature in the Passenger vehicle compartment(20) for human comfort temperature levels.

5. The Hetro passenger vehicle dehumidifier(18) is used for maintaining after COVID recommended hygienic ambient conditions of 24°C to 30°C temperature and 40% to70% relative humidity in a Passenger vehicle compartment(20) of a Passenger vehicle(21) which is air-conditioned.

Citation Information

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