An air conditioner includes a housing, a heat exchanger arranged to exchange heat with air flowing into the housing, a blower fan arranged inside the housing for discharging air that has exchanged heat with the heat exchanger to the outside and a discharging plate having an opening formed to discharge air blown from the blower fan out of the housing, and a plurality of discharging holes formed to discharge air to surroundings of the opening, wherein the discharging plate is arranged to discharge the air that has exchanged heat by the heat exchanger out of the housing, and wherein the discharging plate is made of metal. By such configuration, air conditioner increase user satisfaction.

An air conditioner includes a housing, a heat exchanger arranged to exchange heat with air flowing into the housing, a blower fan arranged inside the housing for discharging air that has exchanged heat with the heat exchanger to the outside and a discharging plate having an opening formed to discharge air blown from the blower fan out of the housing, and a plurality of discharging holes formed to discharge air to surroundings of the opening, wherein the discharging plate is arranged to discharge the air that has exchanged heat by the heat exchanger out of the housing, and wherein the discharging plate is made of metal. By such configuration, air conditioner increase user satisfaction.

A buffered balanced type mobile primary-secondary air conditioner system wherein three working media are used in primary-secondary air conditioner system. The first working medium is a compressor refrigeration working medium, the second working medium is an energy storage and heat transfer working medium shared by the primary machine and the secondary machine, and the third working medium is a secondary machine energy storage and heat transfer working medium. This scheme establishes a buffer balance zone between the primary machine and the secondary machine to store the second working medium.

A buffered balanced type mobile primary-secondary air conditioner system wherein three working media are used in primary-secondary air conditioner system. The first working medium is a compressor refrigeration working medium, the second working medium is an energy storage and heat transfer working medium shared by the primary machine and the secondary machine, and the third working medium is a secondary machine energy storage and heat transfer working medium. This scheme establishes a buffer balance zone between the primary machine and the secondary machine to store the second working medium.

An indoor unit of an air-conditioning apparatus includes an air-sending device unit having an air-sending device unit housing configured to house an air-sending device and provided with an air inlet; and a heat exchanger unit having a heat exchanger unit housing configured to house an indoor heat exchanger, provided with an air outlet, and configured to be coupled to the air-sending device unit housing, wherein the air-sending device includes a rotating fan, an electric motor, and a casing, the casing, the air inflow port, and the air-sending device unit housing, a first rail unit, and a slide member.

A heating, ventilation, and/or air conditioning (HVAC) blower assembly includes a motor and a fan wheel, wherein the motor drives rotation of the fan wheel about an axis of rotation. A blower housing accommodates the fan wheel within a hollow portion and is defined by a base, a curved boundary, a front boundary, and a rear boundary. An inlet port extending through the front boundary facilitates intake of airflow into the fan wheel. An outlet port extending through the base facilitates expulsion of the airflow from the fan wheel. A first portion of the curved boundary includes an involute profile and a second portion of the curved boundary includes a footing extending from the first portion to the base such that airflow exiting through the outlet port is guided away from the fan wheel by an interior-facing surface of the footing.

A heating, ventilation, and/or air conditioning (HVAC) blower assembly includes a motor and a fan wheel, wherein the motor drives rotation of the fan wheel about an axis of rotation. A blower housing accommodates the fan wheel within a hollow portion and is defined by a base, a curved boundary, a front boundary, and a rear boundary. An inlet port extending through the front boundary facilitates intake of airflow into the fan wheel. An outlet port extending through the base facilitates expulsion of the airflow from the fan wheel. A first portion of the curved boundary includes an involute profile and a second portion of the curved boundary includes a footing extending from the first portion to the base such that airflow exiting through the outlet port is guided away from the fan wheel by an interior-facing surface of the footing.

An air conditioner ventilation and pre-cooling device includes a carrying container, a cooling unit and an intake fan. The carrying container is provided for containing condensed water of the evaporator, the cooling unit is connected to the condensed water, and the intake fan guides outside air to pass through the cooling unit. The heat of the condensed unit is conducted to the cooling unit, and the outside air passes through the cooling unit and exchanges heat with the cooling unit to form a pre-cooled air. The outside air is pre-cooled before it enters into an indoor environment, so as to achieve the environmental protection and power saving effects and improve the cooling efficiency.

A cooling system for a building including a lower space and an upper space with a ceiling positioned therebetween. The lower space has a window and an opening in the ceiling is spaced from the window so that the lower space is in air communication with the upper space. The window is covered by water absorbent, porous material having a water source in communication therewith. An opening from the upper space to the outdoors is positioned the length of the upper space from the opening in the ceiling. A fan system is positioned in the upper space to draw air form the lower space and directs the air out the opening to the outdoors. Whereby air is drawn through the water absorbent, porous material, through the opening in the ceiling, and travels the length of the upper space before exiting through the opening from the upper space to the outdoors.

A staged dry out process and control system for an evaporative media cooling system having a plurality of media stages that are selectively activated and deactivated by a control system is disclosed. The staged dry out process ensures that wet media stages are appropriately dried with minimal disruption to the staging strategy implemented by the control system. In one aspect, the staged dry out process monitors deactivated media stages to determine if the media stages reach a dry state before being activated. In another aspect, the staged dry out process locks out a media stage that has been in a wet state beyond a predetermined maximum time limit until the media stage attains a dry state. With this strategy the cooling system can operate without being required to completely shut down for a drying process.