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CN-122008776-A - Air conditioning system for vehicle and control method thereof

CN122008776ACN 122008776 ACN122008776 ACN 122008776ACN-122008776-A

Abstract

The invention provides a vehicle air conditioning system capable of removing fog and blur of a window glass of a vehicle more reliably. The vehicle air conditioning system (1) is provided with a humidity control device (2) having an adsorption unit (20) containing an adsorption material capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the predetermined temperature is exceeded, a first flow path (3) for sending air (10) from the vehicle cabin or the outside of the vehicle to the vehicle cabin without passing through the humidity control device (2), a second flow path (4) for sending the air (10) to the vehicle cabin by passing through the humidity control device (2), and a flow rate control device (5) for controlling the flow rate of the air (10) passing through the first flow path (3) and/or the second flow path (4) so that the ratio of the flow rate of the dehumidified air, which is the ratio of the total flow rate of the air (10) passing through the first flow path (3) and the second flow path (4), is 5% or more, when the air (10) facing the vehicle cabin is blown out from the defroster.

Inventors

  • History is worshipped in field, shore

Assignees

  • 日本碍子株式会社

Dates

Publication Date
20260512
Application Date
20251020
Priority Date
20241112

Claims (8)

  1. 1. An air conditioning system for a vehicle, characterized by comprising: a humidity control apparatus having an adsorption unit containing an adsorption material capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the predetermined temperature is exceeded; A first flow path that sends air from a cabin or an outside of a vehicle to the cabin without passing through the humidity control apparatus; a second flow path for sending the air to the compartment through the humidity control apparatus, and And a flow rate control device that controls, when the air that has been blown toward the vehicle cabin is blown out from a defroster, the flow rate of the air that has passed through the first flow path and/or the second flow path so that a dehumidified air flow rate that is a ratio of a total flow rate of the air that has passed through the first flow path and the second flow path is 5% or more.
  2. 2. The air conditioning system for a vehicle according to claim 1, wherein, The flow control device comprises a blower for delivering the air to the humidifying equipment.
  3. 3. The air conditioning system for a vehicle according to claim 1, wherein, The flow control device includes a flow control valve provided in the first flow path.
  4. 4. The air conditioning system for a vehicle according to any one of claims 1 to 3, characterized in that, The flow rate control device sets the dehumidified air flow rate ratio to 7% or more.
  5. 5. The air conditioning system for a vehicle according to claim 4, wherein, The flow rate control device sets the dehumidified air flow rate ratio to 15% or more.
  6. 6. The air conditioning system for a vehicle according to any one of claims 1 to 3, characterized in that, The vehicle air conditioning system further includes a humidity sensor that measures the humidity in the vehicle cabin, The flow control device changes the dehumidified air flow rate ratio based on the humidity measured by the humidity sensor.
  7. 7. The air conditioning system for a vehicle according to any one of claims 1 to 3, characterized in that, The adsorption unit is provided with: a honeycomb structure having an outer wall and partition walls disposed inside the outer wall and defining cells extending from a first end face to a second end face to form flow paths for the air, and An adsorption layer provided on the surface of the partition wall and containing the adsorption material, The humidity control apparatus further includes a heating mechanism having a pair of electrodes connected to the honeycomb structure, and heating the honeycomb structure by passing an electric current through the pair of electrodes and through the honeycomb structure, At least the partition walls of the honeycomb structure are made of a material having PTC characteristics.
  8. 8. A control method of a vehicle air conditioning system includes a humidity control device having an adsorption unit containing an adsorption material capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the predetermined temperature is exceeded, a first flow path that sends air from a vehicle cabin or an outside of the vehicle to the vehicle cabin without passing through the humidity control device, and a second flow path that sends the air to the vehicle cabin with passing through the humidity control device, The control method of the air conditioning system for a vehicle is characterized by comprising the following steps: When the air directed to the cabin is blown out from the defroster, the flow rate of the air passing through the first flow path and/or the second flow path is controlled so that the ratio of the flow rate of the air passing through the second flow path to the total flow rate of the air passing through the first flow path and the second flow path, that is, the dehumidified air flow rate ratio is 5% or more.

Description

Air conditioning system for vehicle and control method thereof Technical Field The present invention relates to a vehicle air conditioning system and a control method thereof. Background In various vehicles such as automobiles, there is an increasing demand for improving the cabin environment. Specific demands include reduction of carbon dioxide in the vehicle cabin to suppress driver's trouble, conditioning of the vehicle cabin, and removal of harmful volatile components such as odor components and allergy-inducing components in the vehicle cabin. As an effective countermeasure against such a demand, ventilation is given, but ventilation is a factor that causes a large amount of heater energy to be lost in winter, resulting in a reduction in energy efficiency in winter. In particular, electric vehicles (BEV: battery ELECTRIC VEHICLE) have a problem in that the cruising distance is greatly reduced due to energy loss. Patent document 1 below discloses a car purification system including a humidity control device (heater means) by which a target component to be removed such as water vapor and CO 2 in the air of a car is captured in a functional material such as an adsorbent, and then the target component to be removed is reacted or separated by heating and released to the outside of the car, thereby regenerating the functional material. Further, as in patent document 2 below, air is blown onto a window glass of a vehicle to remove fog from the window glass. In order to reduce heat loss due to ventilation during cold weather, the internal atmosphere is circulated and partially introduced into the external atmosphere, so that the humidity of air blown to the window glass is lowered. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2024-101455 Patent document 2 Japanese patent application laid-open No. 2009-298323 Disclosure of Invention It is considered that the use of the air from the humidity control apparatus of patent document 1 for removing the fog blur of the window glass as in patent document 2 can improve the fog blur removal efficiency of the window glass. However, the haze blur removal of the window glass may be insufficient depending on the proportion of the air passing through the humidity control apparatus in the total flow rate of the air having passed through the humidity control apparatus and the air not having passed through the humidity control apparatus. The present invention has been made to solve the above-described problems, and an object thereof is to provide a vehicle air conditioning system and a control method thereof, which can more reliably remove fog blur on a window glass of a vehicle. [1] In one embodiment, the present invention relates to an air conditioning system for a vehicle, comprising a humidity control device having an adsorption unit containing an adsorption material capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the predetermined temperature is exceeded, a first flow path that sends air from a vehicle cabin or outside the vehicle to the vehicle cabin without passing through the humidity control device, a second flow path that sends the air to the vehicle cabin by passing through the humidity control device, and a flow rate control device that controls a flow rate of the air passing through the first flow path and/or the second flow path so that a dehumidification air flow rate, which is a ratio occupied by a flow rate of the air passing through the second flow path in a total flow rate of the air passing through the first flow path and the second flow path, is 5% or more when the air passing through a defroster is blown out of the air passing through the vehicle cabin. [2] In the present invention, in the air conditioning system for a vehicle according to the first aspect, the flow rate control device may include a blower that sends the air to the humidity control device. [3] The present invention may be directed to the air conditioning system for a vehicle according to the first or second aspect, wherein the flow control device may include a flow control valve provided in the first flow path. [4] In the present invention, in the vehicle air conditioning system according to any one of the first to third aspects, the flow rate control device may set the dehumidified air flow rate ratio to 7% or more. [5] In the vehicle air conditioning system according to the fourth aspect of the present invention, the flow rate control device may set the dehumidified air flow rate ratio to 15% or more. [6] The present invention is the vehicle air conditioning system according to any one of the first to fifth aspects, further comprising a humidity sensor that measures humidity in the vehicle cabin, wherein the flow rate control device changes the dehumidified air flow rate ratio based on the humidity measured by the humidity sensor. [7] The present invention provides the air c