8 results about "Air exchange" patented technology

The invention discloses a self-ventilation heat dissipation type oil-immersed transformer, and belongs to the field of transformer equipment. Innovative presetting of ventilation heat dissipation holes in heat dissipation fins can be realized, the migration action of magnetic migration air exchange balls is triggered through the magnetic action after heat is sensed, the magnetic migration air exchange balls are forced to migrate in the ventilation heat dissipation holes and push air to advance towards the interior of a transformer body, air blowing films are inflated and expanded to increase the contact area with transformer oil, the heat conduction effect of the transformer oil can be improved, and meanwhile the contact area can be increased to improve the heat exchange effect. In addition, air in the ventilation heat dissipation holes enters the air blowing films and then is supplemented by external cold air, after the magnetic migration air exchange balls are cooled, the magnetic migration air exchange balls are reset under the elastic action of elastic pull wires, the migration action is repeated, the contact area of the heat dissipation fins and the external air can be increased, and meanwhile the heat exchange effect is improved in an active ventilation mode, and therefore, the heat dissipation performance of the heat dissipation fins is greatly improved.

The invention discloses an automatic selling system used for an unattended amusement bar, and relates to the field of automatic selling. The automatic selling system comprises a box body, an entry and exit entrance guard unit, a main control unit, a video monitoring unit, an air conditioner unit, a ventilation and air exchange unit, an illumination control unit and a fire alarm unit, wherein the main control unit is connected with the entry and exit entrance guard unit and the video monitoring unit; the main control unit is used for regulating air temperature in the box body through the air conditioner unit and the ventilation and air exchange unit; the main control unit is connected with the illumination control unit; the main control unit carries out fire detection and alarm through the fire alarm unit; the main control unit is in data connection with the video monitoring unit, the air conditioner unit, the ventilation unit, the illumination control unit and the fire alarm unit through a CAN (Controller Area Network) communication controller. The automatic selling system can be uninterruptedly opened for 24 hours a day, selling and management cost, manpower cost and working intensity are greatly lowered, convenience is brought to the life of urban residents, and a leisure place is provided.

The invention relates to a water-saving environment-friendly fog-dissipation-type cooling tower and a working method thereof. The water-saving environment-friendly fog-dissipation-type cooling tower comprises a tower body, a water distribution system mounted at the bottom in the tower body, an operation mode switching system mounted above the water distribution system and a heat exchange device mounted above the operation mode switching system; a heat exchange device comprises a plurality of heat exchange groups which are horizontally arranged, and the heat exchange groups communicate with theexterior of the tower body in openable and closable manners; during conventional operation, the heat exchange groups stop communicating with the exterior of the tower body, and the operation mode switching system can completely discharge saturated humid and hot air into the heat exchange groups; and during fog-dissipation operation, the heat exchange groups start to communicate with the exteriorof the tower body, a switching mechanism can prevent part of the saturated humid and hot air from entering the heat exchange groups, and the saturated humid and hot air exchanges heat with unsaturateddry and cold air entering the heat exchange groups from the exterior of the tower body in the heat exchange device. The problem that the working efficiency of an existing cooling tower is reduced while fog dissipation is achieved is solved.

The invention relates to the field of elevators, in particular to a negative pressure elevator car with air disinfection and filtration functions. The technical problems that due to the fact that air circulation in an elevator shaft is poor, the quality of air exchanged by air exchange equipment is not high, people in a lift car are dense, the mobility of the people is large, under the condition that the current epidemic situation is not ended, air cannot be disinfected, and the risk of cross infection is increased are solved. According to the implementation scheme, the negative pressure elevator car with the air disinfecting and filtering functions comprises an elevator car body, negative pressure box bodies and negative pressure air exchange mechanisms, the negative pressure box bodies are fixedly connected to the upper side face and the lower side face of the elevator car body, the two negative pressure box bodies are symmetrically arranged up and down, and the negative pressure air exchange mechanisms are fixedly connected into the two negative pressure box bodies. By arranging the negative pressure air exchange mechanism, the purposes that air enters from the upper portion and exhausts from the lower portion when the elevator ascends and air enters from the lower portion and exhausts from the upper portion when the elevator descends are achieved, and the air exchange quality in the elevator is improved.

The invention relates to a multi-functional ventilator control system which is arranged in a main machine shell through a heating piece and a fan assembly. A first ventilation opening is formed in the first side face of the main machine shell. The heating piece is arranged close to the first ventilation opening. The heating piece and the fan assembly are electrically connected with a control panel assembly. The first side surface of a panel shell is mechanically connected with the first side surface of the main machine shell, the panel shell is provided with a second ventilation opening corresponding to the first ventilation opening, and the second ventilation opening is communicated with the first ventilation opening. A light-emitting assembly is electrically connected with the control panel assembly, the light-emitting assembly is arranged on the panel shell, and therefore the multiple functions of air exchange, air blowing, heating and warming and light emitting (such as light-emitting lighting and light-emitting sterilization lamps) are integrated on the ventilator, different requirements of people can be met, practicability is enhanced, and the installation space and cost are greatly reduced.