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CN-122008816-A - Air conditioning system for vehicle

CN122008816ACN 122008816 ACN122008816 ACN 122008816ACN-122008816-A

Abstract

The invention provides an air conditioning system for a vehicle, wherein even if humidity in the vehicle rises sharply in the process of heating by an HVAC unit, the vehicle interior can be dehumidified with good efficiency, and fog of window glass can be restrained. The vehicle air conditioning system is provided with a flow path (10) through which an interior gas and/or an exterior atmosphere outside the vehicle can flow, a humidity control device (20) which is disposed in the flow path (10) and which can adsorb and desorb moisture, an HVAC unit (30) which includes a damper (52) capable of adjusting the ratio of the amounts of the interior gas and the exterior atmosphere, and a control unit (40) which can control the humidity control device (20) and the HVAC unit (30). A control unit (40) controls the damper (52) so that the amount of external atmosphere introduced increases when the relative humidity in the vehicle becomes 60% or more during heating by the HVAC unit (30) and dehumidification by the humidity control device (20).

Inventors

  • History is worshipped in field, shore

Assignees

  • 日本碍子株式会社

Dates

Publication Date
20260512
Application Date
20251021
Priority Date
20241111

Claims (15)

  1. 1. An air conditioning system for a vehicle, comprising: a flow path through which an interior gas in the vehicle and/or an exterior atmosphere outside the vehicle can flow; a humidity control device disposed in the flow path, the humidity control device being capable of adsorbing and desorbing moisture; an HVAC unit including a damper capable of adjusting a ratio of the introduction amounts of the internal gas and the external atmosphere, and A control unit capable of controlling the humidity control apparatus and the HVAC unit, The control unit controls the damper so that the amount of the external atmosphere introduced becomes large when the relative humidity in the vehicle becomes 60% or more during heating by the HVAC unit and dehumidification by the humidity control device.
  2. 2. The air conditioning system for a vehicle according to claim 1, wherein, The control unit controls the damper so that the ratio of the amount of the external atmosphere introduced is 11% or more when the relative humidity in the vehicle is 60% or more during heating by the HVAC unit and dehumidification by the humidity control device.
  3. 3. The air conditioning system for a vehicle according to claim 1, wherein, The control unit controls the damper so that the ratio of the amount of the external atmosphere introduced is 15% or more when the relative humidity in the vehicle is 60% or more during heating by the HVAC unit and dehumidification by the humidity control device.
  4. 4. The air conditioning system for a vehicle according to claim 1, wherein, The control unit controls the damper so that the ratio of the amount of the external atmosphere introduced is 20% or more when the relative humidity in the vehicle is 60% or more during heating by the HVAC unit and dehumidification by the humidity control device.
  5. 5. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The relative humidity in the vehicle is measured by a humidity sensor provided in the vehicle, and is transmitted to the control unit.
  6. 6. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The ratio of the introduced amount of the external atmosphere when the relative humidity in the vehicle is less than 60% is 0 to 10%.
  7. 7. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The humidity control apparatus is disposed on a downstream side of the damper within the HVAC unit.
  8. 8. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The humidity conditioning apparatus is disposed on an upstream side of the HVAC unit.
  9. 9. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The HVAC unit includes a condenser that is coupled to a heat pump cycle.
  10. 10. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The flow path is branched at the downstream side of the humidity control apparatus into a first flow path for flowing the internal gas and/or the external atmosphere into the vehicle interior and a second flow path for flowing the internal gas and/or the external atmosphere out of the vehicle exterior, The vehicle air conditioning system further includes a first valve that is capable of switching the flow of the internal gas and/or the external atmosphere between the first flow path and the second flow path.
  11. 11. The vehicular air conditioning system according to any one of claims 1 to 4, wherein, The humidity control apparatus includes an adsorption unit containing an adsorbent capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the temperature exceeds the predetermined temperature, and a heating mechanism or heating structure capable of heating the adsorption unit.
  12. 12. The air conditioning system for a vehicle according to claim 11, wherein, The humidity control apparatus includes: A honeycomb structure having an outer peripheral wall and partition walls disposed inside the outer peripheral wall and dividing into a plurality of cells that extend from a first end surface to a second end surface to form flow paths for air; an adsorption layer provided on the surface of the partition wall and containing the adsorbent, and And a pair of electrodes provided on the first end face and the second end face of the honeycomb structure or the outer peripheral wall of the honeycomb structure parallel to the direction in which the cells extend.
  13. 13. The air conditioning system for a vehicle according to claim 12, wherein, At least the partition walls of the honeycomb structure are made of a material having PTC characteristics.
  14. 14. The air conditioning system for a vehicle according to claim 11, wherein, The humidity control apparatus includes an air flow path and a heating medium flow path adjacent to the air flow path, and the adsorption unit is provided in the air flow path.
  15. 15. The air conditioning system for a vehicle according to claim 11, wherein, The humidity control apparatus includes: A honeycomb structure having an outer peripheral wall and partition walls disposed inside the outer peripheral wall and dividing into a plurality of cells that extend from a first end surface to a second end surface to form flow paths for air; an adsorption layer provided on the surface of the partition wall and containing the adsorbent, and And a heater provided on an upstream side of the honeycomb structure.

Description

Air conditioning system for vehicle Technical Field The present invention relates to an air conditioning system for a vehicle. Background In various vehicles such as automobiles, there is an increasing demand for improving the cabin environment. Specific demands include reduction of CO 2 in a vehicle to suppress driver's trouble, conditioning of the vehicle, and removal of harmful volatile components such as odor components and allergy-inducing components in the vehicle. 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. As a method for solving the above-mentioned problems, there is proposed a cabin purifying system (vehicle air conditioning system) comprising a heater member (humidity control equipment), an inflow pipe for connecting a cabin to an inlet end face of the heater member, and an outflow pipe having a first path (first flow path) for connecting an outlet end face of the heater member to the cabin, the heater member comprising a honeycomb structure having an outer peripheral wall and a partition wall disposed inside the outer peripheral wall and forming a plurality of cells forming a flow path extending from one end face to the other end face, at least the partition wall being made of a material having PTC characteristics, a pair of electrodes made of a first electrode provided on one end face and a second electrode provided on the other end face, and a functional material layer provided on a surface of the partition wall, the outflow pipe having a first path for connecting the outlet end face of the heater member to the cabin and a second path (second flow path) for connecting the outlet end face of the heater member to the outside of the vehicle, and provided with a valve for switching the flow of air between the first path and the second path (for example, patent document 1). On the other hand, as an air conditioning system capable of performing cooling and Heating of a vehicle, an air conditioning system provided with HVAC (Heating, ventilation, and air conditioning) means using a heat pump cycle has been proposed (for example, patent documents 2 and 3). Prior art literature Patent literature Patent document 1 International publication No. 2023/074202 Patent document 2 Japanese patent No. 6746742 Patent document 3 Japanese patent laid-open publication 2016-097817 Disclosure of Invention In a vehicle air conditioning system including a humidity control apparatus and an HVAC unit, there is a case where humidity in a vehicle increases rapidly due to an influence of an increase in the number of passengers, rain, or snow carried from outside the vehicle, or the like, when heating is performed by the HVAC unit. If dehumidification by the humidity control apparatus is performed under such conditions, it takes time to dehumidify, and thus there is a problem that window glass in a vehicle tends to be fogged. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle air conditioning system capable of efficiently dehumidifying a vehicle interior to suppress fogging of a window glass even when humidity in the vehicle interior increases sharply during heating by an HVAC unit. The present inventors have made intensive studies on a vehicle air conditioning system including a humidity control device and an HVAC unit, and as a result, have found that the above-described problems can be solved by controlling a damper so that the amount of external air introduced increases when the relative humidity in a vehicle becomes 60% or more during heating by the HVAC unit and dehumidification by the humidity control device. Namely, the present invention is exemplified as follows. <1> An air conditioning system for a vehicle, comprising: a flow path through which an interior gas in the vehicle and/or an exterior atmosphere outside the vehicle can flow; a humidity control device provided in the flow path, the humidity control device being capable of adsorbing and desorbing moisture; an HVAC unit including a damper capable of adjusting a ratio of the introduction amounts of the internal gas and the external atmosphere, and A control unit capable of controlling the humidity control apparatus and the HVAC unit, The control unit controls the damper so that the amount of the external atmosphere introduced becomes large when the relative humidity in the vehicle becomes 60% or more during heating by the HVAC unit and dehumidification by the humidity control device. <2> The air conditioning system for a vehicle according to <1>, wherein, The control unit controls the damper so that the ratio of the amount of the external atmosphere