60results about How to "Reduce frosting time" patented technology

The invention relates to an air conditioning control technology and discloses a control method for relieving frosting of an outdoor condenser of an air conditioner, which solves the problem that the comfort of the air conditioner is influenced by a frost treating mode of the outdoor condenser in the prior art. The technical scheme has the main points of: detecting the temperature T1 of a coil pipe of an indoor evaporator; judging whether the T1 is greater than or equal to N, wherein the N is greater than or equal to 31 DEG C and is less than or equal to 50 DEG C; if so, continuously detectingthe temperature T2 of the coil pipe of the outdoor condenser; otherwise, defrosting the outdoor condenser; and when the T2 is less than or equal to 0 DEG C and retains a certain time, regulating the rotating speeds of motors of indoor and outdoor fans, and delaying the frosting treatment of the outdoor condenser, Through the treatment, after retaining indoor normal heating effect, the frosting time is delayed. The invention is suitable for delaying the frost control of outdoor condensers of all air conditioners.

The invention belongs to the technical field of air conditioners and aims to solve the problem that the self-cleaning control mode of the existing air conditioners generally has a slow frosting speed, which leads to a long time for the entire self-cleaning and affects the normal experience of users. For this reason, the present invention provides a kind of self-cleaning control method that is used for air conditioner, and air conditioner comprises refrigerant circulation system and the solution circulation system that is made of indoor solution film, outdoor solution film, liquid pump and storage tank, self-cleaning control The method includes: reducing the frequency of the compressor and reversing the direction of the four-way valve under cooling conditions; reducing the opening of the electronic expansion valve, reducing the speed of the outdoor fan of the air conditioner and increasing the speed of the liquid pump, so that the outdoor heat exchanger Frosting; after the outdoor heat exchanger is frosted, first close the electronic expansion valve, and then close the solenoid valve on the low-pressure side of the compressor after a preset time; heat the outdoor heat exchanger to defrost and clean the outdoor heat exchanger . The invention can improve the self-cleaning efficiency of the outdoor heat exchanger and improve user experience.

The invention relates to a direct-cooling micro-frost technology adopted refrigerator which comprises a freezing door, a freezing chamber inner container, a refrigerator body and a compressor. A water vapor condensation and separation board made of glass or metal materials is arranged between the freezing door and a freezing chamber of the refrigerator body. The water vapor condensation and separation board and the refrigerator body are fixed to a sunken table of the freezing chamber inner container through separation board shafts on lateral plastic pieces. The water vapor condensation and separation board is connected with the refrigerator body in a manually-opened-and-closed mode. A separation board sealing sleeve is installed on the periphery of the water vapor condensation and separation board and erected on the sunken table of the freezing chamber inner container. An opening of the freezing chamber inner container is right opposite to the water vapor condensation and separation board. The area of the water vapor condensation and separation board is larger than the area of the opening of the freezing chamber inner container. The refrigerator has the advantages that after the direct-cooling micro-frost technology is adopted for the direct-cooling refrigerator, the frosting time of an evaporator of the refrigerator can be shortened, the thickness of a condensed frost layer can be reduced, the refrigerating efficiency of the refrigerator can be improved, energy consumption can be reduced, and meanwhile the defrosting frequency of the refrigerator can be reduced.

The invention discloses a surface coating for a heat exchanger. The coating comprises a priming paint layer and a Teflon layer from inside to outside, wherein the priming paint layer is 7-9 mum in thickness; the Teflon layer is 20-30mum in thickness. Moreover, the invention further discloses a surface treatment method for the heat exchanger. The method comprises the following steps: drying and degreasing the surface of the heat exchanger, removing oil impurities on the surface, and removing a surface paint layer or oxide impurities by performing sand blasting or rinsing; spraying a priming paint layer or a Teflon layer, and soaking a layer of grease outside a Teflon coating, wherein an aluminum base surface is tightly bonded with the Teflon layer through the priming paint layer, and Teflon has hydrophobic and oleophylic characteristics, so that a selected oil layer can be adsorbed onto the surface tightly. The coating surface has the characteristics of mist resistance and frosting delay of a hydrophobic surface as well as the characteristic of easiness in defrosting and draining of an oil layer.