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CN-122008777-A - Air conditioning system for vehicle

CN122008777ACN 122008777 ACN122008777 ACN 122008777ACN-122008777-A

Abstract

The invention provides an air conditioning system for a vehicle, which can ensure ideal dehumidification performance and reduce energy consumption during heating. The vehicle air conditioning system is provided with a flow path (10) through which the interior atmosphere and/or the 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 atmosphere and the exterior atmosphere, and a control unit (40) which can control the humidity control device (20) and the HVAC unit (30). The control unit (40) controls the damper (52) so that the amount of the introduced internal atmosphere is larger than the amount of the introduced external atmosphere when heating by the HVAC unit (30) and dehumidification by the humidity control device (20) are performed.

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
20241111

Claims (13)

  1. 1. An air conditioning system for a vehicle, wherein, The vehicle air conditioning system includes: a flow path through which an interior atmosphere 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 introduced amounts of the internal atmosphere 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 introduced internal atmosphere is larger than the amount of the introduced external atmosphere when heating by the HVAC unit and dehumidification by the humidity control device are performed.
  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 introduced internal atmosphere is 55% or more when heating by the HVAC unit and dehumidification by the humidity control device are performed.
  3. 3. The air conditioning system for a vehicle according to claim 1, wherein, The control unit controls the damper such that the ratio of the amount of the introduced internal atmosphere is 70% or more when heating by the HVAC unit and dehumidification by the humidity control device are performed.
  4. 4. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The humidity control apparatus is disposed on a downstream side of the damper within the HVAC unit.
  5. 5. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The humidity conditioning apparatus is disposed on an upstream side of the HVAC unit.
  6. 6. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The HVAC unit includes a condenser that is coupled to a heat pump cycle.
  7. 7. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The flow path is branched at the downstream side of the humidity control apparatus into a first flow path for flowing the internal atmosphere and/or the external atmosphere into the vehicle interior and a second flow path for flowing the internal atmosphere 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 atmosphere and/or the external atmosphere between the first flow path and the second flow path.
  8. 8. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The humidity control apparatus includes an adsorption unit including an adsorbent capable of adsorbing moisture at a predetermined temperature or lower and releasing the adsorbed moisture when the predetermined temperature is exceeded, and a heating mechanism or heating structure capable of heating the adsorption unit.
  9. 9. The air conditioning system for a vehicle according to claim 8, 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 which 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.
  10. 10. The air conditioning system for a vehicle according to claim 9, wherein, At least the partition walls of the honeycomb structure are made of a material having PTC characteristics.
  11. 11. The air conditioning system for a vehicle according to claim 8, 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.
  12. 12. The air conditioning system for a vehicle according to claim 8, 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 which 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.
  13. 13. The air conditioning system for a vehicle according to any one of claims 1 to 3, wherein, The air conditioning system for the vehicle is used for an electric vehicle, a hybrid electric vehicle or a plug-in hybrid electric vehicle.

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 the 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 apparatus), an inflow pipe connecting a cabin and an inlet end face of the heater member, and an outflow pipe having a first path (first flow path) connecting an outlet end face of the heater member and the cabin, wherein the heater member has a honeycomb structure having an outer peripheral wall and partition walls arranged inside the outer peripheral wall and forming a plurality of cells forming flow paths extending from one end face to the other end face, at least the partition walls being composed of a material having PTC characteristics, a pair of electrodes composed 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 walls, the outflow pipe having a first path connecting the outlet end face of the heater member and the cabin, and a second path (second path) connecting the outlet end face of the heater member and the outside the vehicle, and provided with a valve capable of switching the flow paths between the first and the second flow paths (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 an HVAC (Heating, ventilation and Air Conditioning) unit 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 provided with a humidity control apparatus and an HVAC unit, there is a problem that, when dehumidification is performed by the humidity control apparatus and a large amount of external atmosphere is introduced during heating by the HVAC unit, the interior of the vehicle is excessively dehumidified or the amount of energy consumption required for heating increases. 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 ensuring a desired dehumidification performance and reducing energy consumption during heating. 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 of the HVAC unit so that the amount of air introduced into the interior is larger than the amount of air introduced into the exterior when heating by the HVAC unit and dehumidification by the humidity control device are performed, and have completed the present invention. Namely, the present invention is exemplified as follows. <1> An air conditioning system for a vehicle, comprising: a flow path through which an interior atmosphere 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 introduced amounts of the internal atmosphere 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 introduced internal atmosphere is larger than the amount of the introduced external atmosphere when heating by the HVAC unit and dehumidification by the humidity control device are performed. <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 introduced internal atmosphere is 55% or more when heating by the HVAC unit and dehumidification by the humidity control device are pe