In an air conditioning system which conditions air in one air-conditioning-target space with a plurality of air conditioners each including a compressor, the energy consumption efficiency as a whole is improved. The air conditioners (21 to 29) each include a service-side heat exchanger exchanging heat between air of a room which is the air-conditioning-target space and a refrigerant, a heat-source-side heat exchanger exchanging heat between air of a common space and the refrigerant, and a compressor (41 to 49) compressing the refrigerant circulating through the service-side heat exchanger and the heat-source-side heat exchanger. When an air conditioning capacity falls within a predetermined range for at least two of the plurality of air conditioners (21 to 29), part of the air conditioners whose compressors are in operation has its compressor stopped.

An conditioner appliance, including methods for operating the same, is provided herein. The air conditioner appliance may include a housing, an outdoor heat exchanger, an indoor heat exchanger, a bulkhead, an outdoor fan, an indoor fan, one or more sensors, and a substitute control board. The housing may define an outdoor portion and an indoor portion. The outdoor fan may be disposed in the outdoor portion to direct an airflow across the outdoor heat exchanger. The indoor fan may be disposed in the indoor portion to direct an airflow across the indoor heat exchanger. The one or more sensors may be mounted within the housing. The substitute control board may be operably coupled to the outdoor fan, the indoor fan, and the one or more sensors. The substitute control board may be configured to initiate a service operation.

The present invention achieves a moisture absorbing material which enables efficient dehumidification without supercooling or large heat quantity; and a dehumidifier in which the moisture absorbing material is used. The moisture absorbing material can be a dried product of a polymer gel in which an interpenetrating polymer network structure or a semi-interpenetrating polymer network structure is formed by (a) a stimuli-responsive polymer whose affinity with water changes reversibly in response to an external stimulus and (b) a hydrophilic polymer.

The present invention achieves a moisture absorbing material which enables efficient dehumidification without supercooling or large heat quantity; and a dehumidifier in which the moisture absorbing material is used. The moisture absorbing material can be a dried product of a polymer gel in which an interpenetrating polymer network structure or a semi-interpenetrating polymer network structure is formed by (a) a stimuli-responsive polymer whose affinity with water changes reversibly in response to an external stimulus and (b) a hydrophilic polymer.

A dehumidification system includes an evaporator, a condenser positioned proximate to the evaporator, and a drain pan. The drain pan is disposed at least partially below the evaporator and the condenser. The drain pan includes a top piece and a bottom piece disposed at least partially below the top piece. The top piece includes a drainage opening, and is configured to collect water condensed from the evaporator and drain the condensed water to the bottom piece via the drainage opening. The bottom piece includes an enclosed wall, and the condensed water drained from the top piece is directed into an area of the bottom piece that is at least partially surrounded by the enclosed wall.

A dehumidification system includes an evaporator, a condenser positioned proximate to the evaporator, and a drain pan. The drain pan is disposed at least partially below the evaporator and the condenser. The drain pan includes a top piece and a bottom piece disposed at least partially below the top piece. The top piece includes a drainage opening, and is configured to collect water condensed from the evaporator and drain the condensed water to the bottom piece via the drainage opening. The bottom piece includes an enclosed wall, and the condensed water drained from the top piece is directed into an area of the bottom piece that is at least partially surrounded by the enclosed wall.

A portable dehumidifier includes a cabinet, an evaporator, a condenser, a drain pan, multiple support legs, a compressor, and a fan. The cabinet includes an airflow inlet, an airflow outlet, and at least two wheels. The evaporator is located adjacent to the airflow inlet. The condenser is located adjacent to the evaporator and on a side of the evaporator opposite the airflow inlet. The drain pan is located at least partially below the evaporator and the condenser. The support legs extend from a bottom side of the drain pan towards the bottom side of the cabinet. The compressor is located below the drain pan. The fan is located adjacent to the condenser and on a side of the condenser opposite the evaporator.

A portable dehumidifier includes a cabinet, an evaporator, a condenser, a drain pan, multiple support legs, a compressor, and a fan. The cabinet includes an airflow inlet, an airflow outlet, and at least two wheels. The evaporator is located adjacent to the airflow inlet. The condenser is located adjacent to the evaporator and on a side of the evaporator opposite the airflow inlet. The drain pan is located at least partially below the evaporator and the condenser. The support legs extend from a bottom side of the drain pan towards the bottom side of the cabinet. The compressor is located below the drain pan. The fan is located adjacent to the condenser and on a side of the condenser opposite the evaporator.

A window air conditioner is provided. The window air conditioner includes an air conditioner body; and a sealing plate assembly disposed at at least one side of the air conditioner body and including a fixed sealing plate group and a sliding sealing plate group connected with the fixed sealing plate group in a sealing manner, in which the fixed sealing plate group is disposed on a side wall of the air conditioner body, and the sliding sealing plate group is disposed at a side of the fixed sealing plate group away from the air conditioner body slidably in a direction approaching to or moving away from the air conditioner body.

A heat transfer unit includes housing that includes a compressor, a condenser, one or more fans, and an air duct disposed on a side of the compressor unit. The heat transfer unit is configured such that the unit may operate in a mini-split or stacked configuration.