CN-122015203-A - Air conditioning system and control method thereof

Abstract

The invention provides an air conditioning system with excellent efficiency of an adsorption mode and a regeneration mode of a humidity control device. The air conditioning system is provided with a flow path (10) through which air in the interior and/or the exterior can circulate, a humidity control device (20) disposed in the flow path (10) and capable of repeatedly executing an adsorption mode in which moisture is adsorbed and a regeneration mode in which moisture is desorbed, a control unit (40) capable of controlling the flow rate of the air flowing through the flow path (10) and the humidity control device (20), and a humidity sensor (70) for measuring the relative humidity in the interior. A control unit (40) monitors the relative humidity in the room by means of a humidity sensor (70), and controls at least 1 of the flow rate and execution time of air in the regeneration mode and the adsorption mode in accordance with changes in the relative humidity in the room.

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 (20)

1. 1. An air conditioning system is provided with: a flow path through which air in the room and/or the outside can circulate; A humidity control device disposed in the flow path, the humidity control device being capable of repeatedly executing an adsorption mode in which moisture is adsorbed and a regeneration mode in which the moisture is released; a control unit capable of controlling the flow rate of the air flowing through the flow path and the humidity control device, and A humidity sensor for measuring the relative humidity in the room, The control unit monitors the relative humidity in the room by the humidity sensor, and controls at least 1 of the flow rate and the execution time of the air in the regeneration mode and the adsorption mode according to a change in the relative humidity in the room.
2. 2. The air conditioning system of claim 1, wherein, The control unit increases at least 1 of the flow rate and the execution time of air when the relative humidity in the room increases in the regeneration mode.
3. 3. The air conditioning system of claim 1, wherein, The control unit reduces at least 1 of the flow rate and the execution time of air when the relative humidity in the room is reduced in the regeneration mode.
4. 4. The air conditioning system of claim 1, wherein, The control unit increases at least 1 of the flow rate and the execution time of air when the relative humidity in the room is reduced in the adsorption mode.
5. 5. The air conditioning system of claim 1, wherein, The control unit reduces at least 1 of the flow rate and the execution time of air when the relative humidity in the room increases in the adsorption mode.
6. 6. The air conditioning system according to any of claims 1 to 5, wherein, The air conditioning system further comprises a temperature sensor for measuring the temperature in the room, The control unit obtains a relation between an absolute humidity in the room and an adsorption speed and a release speed of the moisture in the humidity control device in advance, obtains the absolute humidity from the relative humidity and the temperature measured by the humidity sensor and the temperature sensor, calculates the adsorption speed and the release speed, and controls at least 1 of a flow rate and an execution time of air so as to achieve the target relative humidity in the room.
7. 7. The air conditioning system according to any of claims 1 to 5, wherein, The air conditioning system is for a vehicle.
8. 8. The air conditioning system of claim 7, wherein, The control unit controls at least 1 of the flow rate and execution time of air to be 1.1 times or more the relative humidity in the room to 40% when the relative humidity in the room is higher than 40% in the regeneration mode.
9. 9. The air conditioning system of claim 7, wherein, The control unit controls at least 1 of the flow rate and the execution time of air to be 0.9 times or less when the relative humidity in the room is 40% or less when the relative humidity in the room is less than 40% in the regeneration mode.
10. 10. The air conditioning system of claim 7, wherein, The control unit controls at least 1 of the flow rate and the execution time of air to be 1.1 times or more the relative humidity in the room to 40% when the relative humidity in the room is lower than 40% in the adsorption mode.
11. 11. The air conditioning system of claim 7, wherein, The control unit controls at least 1 of the flow rate and the execution time of air to be 0.9 times or less when the relative humidity in the room is 40% or less when the relative humidity in the room is higher than 40% in the adsorption mode.
12. 12. The air conditioning system according to any of claims 1 to 5, wherein, The regeneration mode is not performed when the relative humidity is 20% or less.
13. 13. The air conditioning system according to any of claims 1 to 5, wherein, The regeneration mode is not performed when the relative humidity is 10% or less.
14. 14. The air conditioning system of claim 7, wherein, The air conditioning system further includes an HVAC unit capable of performing cooling and heating based on heating and cooling of the air in the room and/or the outside.
15. 15. The air conditioning system of claim 14, wherein, The humidity conditioning apparatus is disposed within the HVAC unit.
16. 16. The air conditioning system of claim 14, wherein, The humidity conditioning apparatus is disposed on an upstream side of the HVAC unit.
17. 17. The air conditioning system according to any of claims 1 to 5, 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.
18. 18. The air conditioning system of claim 17, 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 the 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 on the outer peripheral wall of the honeycomb structure parallel to the direction in which the cells extend.
19. 19. The air conditioning system of claim 18, wherein, At least the partition walls of the honeycomb structure are made of a material having PTC characteristics.
20. 20. A control method of an air conditioning system, wherein, The air conditioning system is provided with: a flow path through which air in the room and/or the outside can circulate; A humidity control device disposed in the flow path, the humidity control device being capable of repeatedly executing an adsorption mode in which moisture is adsorbed and a regeneration mode in which the moisture is released; a control unit capable of controlling the flow rate of the air flowing through the flow path and the humidity control device, and A humidity sensor for measuring the relative humidity in the room, In the air conditioning system, The relative humidity in the room is monitored by the humidity sensor, and at least 1 of the flow rate and the execution time of the air in the regeneration mode and the adsorption mode is controlled according to a change in the relative humidity in the room.

Description

Air conditioning system and control method thereof Technical Field The present invention relates to an air conditioning system and a control method thereof. Background In various buildings such as offices, schools, and houses, and various vehicles such as automobiles, there is an increasing demand for improvement of indoor environments. Specific demands include reduction of CO 2 in a room to suppress sleepiness, conditioning of the room, removal of harmful volatile components such as odor components and allergy inducing components in the room, and the like. 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 (adsorbent) 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 (1) capable of switching the flow path between the first path and the second flow path. Prior art literature Patent literature Patent document 1 International publication No. 2023/074202 Disclosure of Invention Since the adsorption amount and the desorption amount of moisture of the adsorbent used in the humidity control apparatus change according to the humidity, there is a problem that the operation efficiency in the adsorption mode and the regeneration mode of the humidity control apparatus is lowered. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioning system and a control method thereof, which are excellent in efficiency in an adsorption mode and a regeneration mode of a humidity control device. The present inventors have made intensive studies on an air conditioning system including a humidity control device, and as a result, have found that the above-described problems can be solved by monitoring the relative humidity in a room by a humidity sensor and controlling at least 1 of the flow rate and execution time of air in a regeneration mode and an adsorption mode in accordance with a change in the relative humidity in the room, and have completed the present invention. Namely, the present invention is exemplified as follows. <1> An air conditioning system comprising: a flow path through which air in the room and/or the outside can circulate; A humidity control device disposed in the flow path, the humidity control device being capable of repeatedly executing an adsorption mode in which moisture is adsorbed and a regeneration mode in which the moisture is released; a control unit capable of controlling the flow rate of the air flowing through the flow path and the humidity control device, and A humidity sensor for measuring the relative humidity in the room, The control unit monitors the relative humidity in the room by the humidity sensor, and controls at least 1 of the flow rate and the execution time of the air in the regeneration mode and the adsorption mode according to a change in the relative humidity in the room. <2> The air conditioning system according to <1>, wherein, The control unit increases at least 1 of the flow rate and the execution time of air when the relative humidity in the room increases in the regeneration mode. <3> The air conditioning system according to <1> or <2>, wherein, The control unit reduces at least 1 of the flow rate and the execution time of air when the relative humidity in the room is reduced in the regeneration mode. <4> The air conditioning system according to any one of <1> to <3>, wherein, The control unit increases at least 1 of the flow rate and the execution time of air when the relative humidity in the room is reduced in the adsorption mode. <5> The air conditionin