7results about How to "Reduce cooling area" patented technology

The utility model provides a kind of high-temperature-resistant long-life ball bearing retainer, it is related to bearing retainer technical field, and it includes: hold frame body;The retainer body is annular structure, and ball hole is arranged in annular array shape on the inner wall of retainer body;Annular array shape is arranged in the through hole of the outer wall of retainer body, and the through hole is circular hole structure, and the through hole arranged in annular array shape is jointly composed of the heat dissipation structure of retainer body.Utilize nickel-based alloy high melting point (1300 DEG C above) and strong oxidation resistance, so that retainer is not easy to heat softening or oxidation corrosion failure under high temperature working condition (such as industrial kiln, aeroengine), directly prolongs the service life under high temperature environment;Through type circular through hole forms three-dimensional heat dissipation channel, cooperates the forced convection of lubricating medium (oil / gas), and internal heat is quickly taken away.For example in high-speed motor, airflow passes through through hole can make retainer temperature reduce 20%~30%, avoid local overheating to cause material failure.

This invention provides an air-conditioning range hood and its control method, relating to the technical field of kitchen appliances. The air-conditioning range hood includes: a refrigeration system, a first heat exchange channel, a second heat exchange channel, an electric refrigeration module, a first temperature detection module, and a controller. The refrigeration system includes a condenser; the condenser of the refrigeration system is located inside the first heat exchange channel; the second heat exchange channel is located outside the first heat exchange channel; the heat absorption part of the electric refrigeration module is located inside the first heat exchange channel, and the heat dissipation part of the electric refrigeration module is located inside the second heat exchange channel; along the airflow direction of the first heat exchange channel, the heat absorption part is located in front of the condenser; the first temperature detection module is located inside the first heat exchange channel and is used to detect the temperature T1 inside the first heat exchange channel.

A liquid cooling system for power batteries in new energy commercial vehicles includes a mounting frame, frame skin, a primary heat dissipation device, a secondary heat dissipation device, and a tertiary heat dissipation device. This invention uses coolant in a water-cooled condenser to absorb the heat of the refrigerant, and then uses ambient air to carry it away through a low-temperature radiator. By using a water-cooled condenser and a low-temperature radiator instead of an air-cooled condenser, the heat dissipation area is reduced by half compared to using a parallel flow condenser. Similarly, the number of fans can also be reduced by half. At the same time, the fixing method of the low-temperature radiator is easy to install, which can effectively reduce the assembly difficulties caused by dimensional tolerances. This invention has a specially designed cooling pipe structure, which can maximize the temperature uniformity of all battery packs and improve the cell life.

The utility model relates to the technical field of cold chain transportation, in particular to an intelligent balanced refrigeration device for cold chain transportation, which comprises a cargo compartment, refrigeration equipment for conveying cold air into the cargo compartment, an automatic control device for controlling the refrigeration equipment and a cold air flowing device mounted in the cargo compartment, a compartment door facilitating loading is hinged to the end, away from the refrigeration equipment, of the cargo compartment in a matched mode, the automatic control device can automatically monitor the temperature of all positions in the cargo compartment and control automatic starting and stopping of the refrigeration equipment, the cold air flowing device comprises a cross-flow fan installed in the cargo compartment, and an air inlet and an air outlet are formed in the cross-flow fan. The cross-flow fan is installed on the lower side, close to a compartment door, of the cargo compartment, the cross-flow fan and the refrigeration equipment are arranged in an up-down diagonal mode, an air inlet of the cross-flow fan is horizontally arranged in the direction of a vehicle head of the cargo compartment, and an air outlet of the cross-flow fan is vertically arranged upwards. The refrigeration effect of the refrigerator car is improved.

The utility model provides a cold start heat exchange device for a hydrogen fuel cell, and belongs to the technical field of hydrogen fuel cells. The technical problem that the heat exchange rate of the hydrogen fuel cell in the cold start heating process is low is solved. Comprising a plurality of accommodating grooves for accommodating heat exchange parts in the circumferential direction of an accommodating part, when heat exchange is not needed, the plurality of heat exchange parts lean against one another to reduce the heat dissipation area so as to further reduce the heat loss, and the battery can be quickly heated when the hydrogen fuel battery is cold-started next time; when the battery is in cold start, the medium driving assembly drives the heat exchange medium in the heat exchange cavity to be filled into the expansion cavity and pushes the heat exchange part to slide out of the storage groove, the heat dissipation area is increased, and the heat exchange rate is increased.

This invention relates to a water-cooled pipe for the bottom of a blast furnace, belonging to the field of metallurgical industry. The water-cooled pipe (2) is arranged at the bottom of the blast furnace, divided into an inner ring region, a middle ring region, and an outer ring region from the inside out according to the distance from the center of the blast furnace. The diameter of the water-cooled pipe (2) in the inner ring region is smaller than that in the middle ring region, which is smaller than that in the outer ring region. The cooling intensity gradually decreases from the outside to the inside, forming a pot-bottom erosion curve (1) inside the blast furnace hearth, thereby increasing the core temperature of the blast furnace hearth. This invention can enhance the cooling of the elephant foot region of the hearth, slow down the erosion of the refractory material in the elephant foot region, reduce the diameter of the middle ring pipe, reduce the cooling area, and minimize the diameter of the inner ring pipe, resulting in the smallest cooling area. The cooling intensity gradually decreases from the outside to the inside, thus forming a pot-bottom erosion, while simultaneously increasing the core temperature, ensuring the hearth is active, and extending the hearth's lifespan.

The utility model provides a boost isolation transformer for an offshore wind turbine generator. The boost isolation transformer comprises a transformer body; the transformer body is coated with the shell; the shell comprises a side plate; heat dissipation frames are arranged on the three adjacent side plates; transversely arranged heat dissipation blades are arranged on the heat dissipation frame; a driving assembly arranged at the top of the heat dissipation frame is connected with the heat dissipation blades and a control device of the driving assembly; the control device comprises a supporting column penetrating through the x-direction center line of the cooling blade; the traction cables are connected with the clamping parts and are separately arranged on the two sides of the supporting column, and the baffles are arranged on the bottom surfaces of the heat dissipation blades and are connected with the traction cables. The heat dissipation frame is arranged on the transformer shell, collaborative optimization of efficient heat dissipation and protection functions is achieved through the design of the modular driving structure and the adjustable heat dissipation blades, and the problem that in the prior art, heat dissipation and rain prevention of an offshore transformer shell are difficult to achieve at the same time is solved.