An indoor heat exchanger includes a heat exchanger shell, a side plate structure including shell side plates arranged at both ends of the heat exchanger shell, heat exchange fins installed at the shell side plates provided in the heat exchanger shell, refrigerant pipes passing through the heat exchange fins, and connection pipes protruding from an end of the heat exchanger shell and each connected to ends of two refrigerant pipes on same side.

An indoor heat exchanger includes a heat exchanger shell, a side plate structure including shell side plates arranged at both ends of the heat exchanger shell, heat exchange fins installed at the shell side plates provided in the heat exchanger shell, refrigerant pipes passing through the heat exchange fins, and connection pipes protruding from an end of the heat exchanger shell and each connected to ends of two refrigerant pipes on same side.

The present invention relates to a compact air conditioning device for a railroad equipment house or highway traffic control device. The device is primarily comprised of a housing with an interior space that preferably houses at least one air-conditioning unit with multiple features. A supply grate in the front wall of the housing can be routed into the equipment house such that the air-conditioning unit delivers cool air into the equipment house. The operation of the air-conditioning unit may be controlled by a remote or automatically controlled via at least one sensor. The air-conditioning unit may further be powered by at least one solar panel.

The present invention relates to a compact air conditioning device for a railroad equipment house or highway traffic control device. The device is primarily comprised of a housing with an interior space that preferably houses at least one air-conditioning unit with multiple features. A supply grate in the front wall of the housing can be routed into the equipment house such that the air-conditioning unit delivers cool air into the equipment house. The operation of the air-conditioning unit may be controlled by a remote or automatically controlled via at least one sensor. The air-conditioning unit may further be powered by at least one solar panel.

A door assembly for an air conditioner indoor unit includes a door mounting plate, a door, a guiding part, and a drive assembly. The door mounting plate includes a receiving groove and a guiding groove. The door is configured to be movable in a direction approaching and away from the door mounting plate. The guiding part is connected with the door, located at a side of the door facing the door mounting plate, and movably disposed in the guiding groove. The drive assembly is configured to drive the door to move, and is disposed in the receiving groove.

A door assembly for an air conditioner indoor unit includes a door mounting plate, a door, a guiding part, and a drive assembly. The door mounting plate includes a receiving groove and a guiding groove. The door is configured to be movable in a direction approaching and away from the door mounting plate. The guiding part is connected with the door, located at a side of the door facing the door mounting plate, and movably disposed in the guiding groove. The drive assembly is configured to drive the door to move, and is disposed in the receiving groove.

A window air conditioner is disclosed. The window air conditioner has a casing, an indoor heat exchanger, an indoor wall and a fresh air housing. The casing has an indoor air inlet and an indoor air outlet, and the indoor heat exchanger is mounted in the housing and corresponds to the indoor air inlet. The indoor wall is mounted in the casing, and has an indoor air duct for communicating an air outlet side of the indoor heat exchanger with the indoor air outlet. The fresh air housing is installed in the casing, and has a fresh air inlet, and a first fresh air outlet and a second fresh air outlet communicated with the fresh air inlet. The first fresh air outlet is located on the air inlet side of the indoor heat exchanger, and the second fresh air outlet is communicated with the indoor air duct.

Disclosed is a window air conditioner having a constant temperature dehumidification mode. A first indoor heat exchanger and a second indoor heat exchanger of the air conditioner are stacked in an air inlet direction of an indoor air duct of the air conditioner. In the constant temperature dehumidification mode, one of the indoor heat exchangers is configured to be in a heating mode, and the other one is configured to be in a cooling mode. In this way, both fresh air and indoor air may be dehumidified and heated, a user may feel the fresh air and the temperature of the dehumidified air is comfortable.

Disclosed is a window air conditioner having a constant temperature dehumidification mode. A first indoor heat exchanger and a second indoor heat exchanger of the air conditioner are stacked in an air inlet direction of an indoor air duct of the air conditioner. In the constant temperature dehumidification mode, one of the indoor heat exchangers is configured to be in a heating mode, and the other one is configured to be in a cooling mode. In this way, both fresh air and indoor air may be dehumidified and heated, a user may feel the fresh air and the temperature of the dehumidified air is comfortable.

The method of modifying an air conditioner for heating takes advantage of the features and operation of a conventional limited space air conditioner, such as a portable room air conditioner. A hood or manifold is placed over the vents or grille that normally exhausts cold air into the room, and a flexible duct hose is connected between the hood or duct and an exhaust vent installed in a window or ceiling to exhaust cold air produced by the air conditioner outside the building. The duct from the condenser or hot air side of the air conditioner, which would normally be exhausted outside the building, is open to the room in need of heating. Thus, the hot air produced by normal operation of the air conditioner is used to heat the room.